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BMeteorol. Z. (Contrib. Atm. Sci.), PrePub DOI 10.1127/metz/2021/1101 PrePub Article© 2021 The authors
Climate changes and their impact on selected sectors of thePolish-Saxon border region under RCP8.5 scenarioconditionsBartłomiej Miszuk∗, Mariusz Adynkiewicz-Piragas, Agnieszka Kolanek, Iwona Lejcus,Iwona Zdralewicz and Marzenna Stronska
Institute of Meteorology and Water Management – National Research Institute, Wrocław, Poland
(Manuscript received June 14, 2021; in revised form August 31, 2021; accepted September 16, 2021)
AbstractClimate changes are one of the most important factors affecting various spectrum of the human activity andnatural environment. They can significantly impact technical infrastructure, modify structures of cultivation,and have an influence on species structure. Furthermore, some of the changes may also negatively affect thehuman organism which consequently influence health and tourism issues. The region of Polish-Saxon borderis characterized by a high variability in terms of land use and natural environment. Thus, the problem ofclimate changes is one of the most important issues in this area. The goal of this paper was to assessed theimpact of climate changes on the sectors of biodiversity, forestry, agriculture, transport, tourism, and publichealth, considering the aspects of sensitivity and risk assessment. The results of climate changes indicatedobserved or projected significant changes in thermal, precipitation, snow and storm conditions. The analysison sensitivity and risk showed a high spatial variability depending on sector. The northern part of the regionis usually endangered in the context of biodiversity and forestry, while the highest risk and sensitivity fortourism are noticed in the mountains. In the case of transport and public health, climate changes can usuallyaffect them in densely populated areas, whereas the central part of the region is most at risk for the sectorof agriculture. The results of this research can be a basis for further analysis related to adaptation to climatechanges.
Keywords: climate changes, sensitivity, risk assessment, Lower Silesia, Saxony
1 Introduction1
Climate changes are currently one of the most im-2
portant processes in Central Europe. They have a sig-3
nificant impact on the human life, technical infras-4
tructure, natural environment and economy. In Ger-5
many, air temperature in the 20th century increased by6
0.8–1.0 °C (Zebisch et al., 2005), while in 1881–20197
rose by 1.6 °C (Kaspar and Friedrich, 2021; Im-8
bery et al., 2021). The total increase in mean air9
temperature in Poland since 1951 amounted to 2 °C10
(IMGW-PIB, 2021; Ustrnul et al., 2021). In the case11
of precipitations, the changes were characterized by12
a high spatial variability. No statistically significant13
trends were usually noticed for the regions of Germany14
and Poland (Zebisch et al., 2005; Marosz et al., 2011;15
DWD, 2020; Łupikasza and Małarzewski, 2021).16
However, in some cases, an increase in the frequency17
of strong precipitations and droughts was either ob-18
served or projected (Kundzewicz and Jania, 2007,19
Hänsel and Matschullat, 2009; Schwarzak et al.,20
2015; Somorowska, 2016, Umweltbundesamt, 2019;21
Pinskwar et al., 2019; Pinskwar and Chorynski,22
2021).23
∗Corresponding author: Bartłomiej Miszuk, Institute of Meteorology andWater Management – National Research Institute, ul. Parkowa 30, 51-616Wrocław, Poland, [email protected]
The analysis carried out in the study focused on 24
the Polish-Saxon trans-border area, located in Central 25
Europe and bordering with Czechia in the south. The 26
challenges posed by climate changes in this region 27
are very important because of a significant variety in 28
terms of land use, economy, social aspects and the ge- 29
ographical factor that can affect numerous sectors. Most 30
of the region is used for agriculture or forestry pur- 31
poses (Lünich et al., 2014). There are also health re- 32
sorts located in the area, while the mountains are at- 33
tractive for tourists. The results of the research car- 34
ried out for 1971–2010 within KLAPS and NEYMO 35
projects showed that mean annual air temperature in the 36
region increased by 1.0–1.2 °C (Mehler et al., 2014; 37
Pluntke et al., 2016). The positive trends were also 38
noticed for heat and summer days occurrence and for 39
the indices concerning vegetation. Consequently, this 40
caused changes in biological state (Chmielewski et al., 41
2005) and bioclimate conditions which had a significant 42
impact on tourism and health-related issues (Mehler 43
et al., 2014; Miszuk et al., 2016; Miszuk, 2021). Simul- 44
taneously, the frequency of extreme precipitations and 45
dry periods increased, especially in the summer season 46
(Lünich et al., 2014). This confirmed the results carried 47
out for different periods (Hänsel and Matschullat, 48
2006; Łupikasza et al., 2011; Hänsel et al., 2019). The 49
climate projections indicate further increase in air tem- 50
© 2021 The authorsDOI 10.1127/metz/2021/1101 Gebrüder Borntraeger Science Publishers, Stuttgart, www.borntraeger-cramer.com
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2 B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
perature and the intensification of heat stress in the fol-51
lowing decades (Schwarzak et al., 2014; Miszuk et al.,52
2016). Furthermore, precipitation totals can addition-53
ally decrease by the end of the 21st century (Lünich54
et al., 2014; Pluntke et al., 2016; Adynkiewicz-Pira-55
gas and Miszuk, 2020), especially under RCP8.5 sce-56
nario.57
In Germany, extreme weather events caused infras-58
tructure losses amounting to C 3.1 billion (Umwelt-59
bundesamt, 2019), while in Poland, the losses trig-60
gered by a single heavy rainfall episode in an ur-61
ban area could reach as much as PLN 130 million62
(C 28 million) (IOS, 2018). As a result, the problem63
of climate changes and their impact on different sec-64
tors is one of the most important issues undertaken65
within the UE policies (i.e. Siddi, 2020; EC, 2021)66
The studies focusing on these aspects indicated critical67
threats to biodiversity (IPCC, 2002; Reid, 2006), em-68
phasized a high significance of thermal, precipitation69
and wind conditions in the sector of transport (Colin70
et al., 2016; Christodoulou and Demirel, 2018, UN-71
ECE, 2020) and highlighted the impact of heat stress72
on public health and tourism (Amelung et al. 2007;73
Paci, 2014; IPCC, 2014, Scott et al. 2019). In the case74
of forestry and agriculture, they concerned the influ-75
ence of climate conditions on crop yield and species76
structure (Spathelf et al., 2013; IPCC, 2014; EEA Re-77
port, 2019). Similar analysis for these sectors were con-78
sidered in both German and Polish studies and strate-79
gies (Zebisch et al. 2005; Schröter et al. 2006; Ger-80
man Strategy for Adaptation to Climate Change,81
2008; Hoy et al., 2011; Kundzewicz and Matczak,82
2012; IOS, 2013, 2018; Ministerstwo Srodowiska,83
2013; Kundzewicz et al., 2018; Schliep et al., 2018;84
Mücke and Litvinovitch, 2020).85
In order to examine the impact of climate change on86
economic, social and environmental aspects, risk analy-87
sis are carried out (i.e., Schröter et al., 2006, Settele88
et al., 2010; Buth et al., 2015; Berry et al., 2018; IOS,89
2018, Fronzek et al., 2019; Kahlenborn et al., 2021).90
Besides the evaluation of climate changes, they often91
consider the issues of sensitivity and vulnerability, con-92
cerning the respondence of a system to climate changes93
and the extent to which climate changes can damage a94
system (IPCC, 1996). Risk levels can be assessed us-95
ing risk matrix which was frequently applied for risk96
assessment purposes (i.e., Smolarkiewicz et al., 2011;97
Duijm, 2015).98
The objective of this study is to evaluate the im-99
pact of climate changes on the sectors of biodiversity,100
forestry, agriculture, transport, tourism and public health101
in the Polish-Saxon border area, using RCP8.5 scenario102
and considering the evaluation of sensitivity and risk re-103
lated to climate changes. The aspects of risk assessment104
for water management and energy production were pre-105
sented by Adynkiewicz-Piragas and Miszuk (2020).106
The risk analysis for the selected sectors considered107
the evaluation of probability referring to the changes in108
particular meteorological indices and the consequences109
of the changes for each of the sectors. The results of 110
this research based on the outcomes of the projects of 111
‘TRANSGEA – Cross-border co-operation in local ac- 112
tions to adapt to climate changes’ and ‘WIKT – Support 113
for measures related to climate protection in the cross- 114
border region’, accomplished within the Programme 115
2014–2020 INTERREG V-A Poland-Saxony. 116
2 Materials and methods 117
2.1 Research area 118
The analysis concerned the evaluation of climate con- 119
ditions, sensitivity to climate changes and risk as- 120
sessment for 172 communes located in nine Polish 121
and two German districts (Fig. 1). Climate condi- 122
tions and probability of their changes were examined 123
based on both current and projected data. The evalu- 124
ation was carried out for different hypsometric zones: 125
lowlands (< 150 m a.s.l.), uplands (151–300 m a.s.l.), 126
mountain foreland (301–600 m a.s.l.) and mountains 127
(> 600 m a.s.l.). Each commune was assigned to a spe- 128
cific zone depending on its mean altitude. Similar hypso- 129
metric classes were selected for the purposes of KLAPS 130
project that concerned climate conditions in the Polish- 131
Saxon region (Mehler et al., 2014). As there are only 132
a few meteorological stations in the region and its sur- 133
roundings where at least several meteorological vari- 134
ables are measured, each of the zones was represented 135
by one meteorological station. The analysis carried out 136
within KLAPS and NEYMO projects and further stud- 137
ies showed that the direction of climate changes and 138
their statistical significance are usually similar within 139
a given hypsometric level, while differences are more 140
often noticed in terms of the magnitude of changes 141
(Lünich et al. 2014; Mehler et al., 2014; Pluntke 142
et al., 2016; Miszuk, 2021). Analysis of sensitivity (and 143
consequently risk assessment) was carried out for each 144
commune separately. 145
2.2 Meteorological data and climate 146
projections 147
Climate analysis was carried out using meteorological 148
data from DWD (Germany) and IMGW-PIB (Poland) 149
stations in the region. This concerned daily records of 150
air temperature, precipitations, frequency of storms and 151
snow cover for 1971–2015 period. Data from four sta- 152
tions was taken into consideration. Each station was 153
located in a different hypsometric zone – Legnica 154
(122 m a.s.l.) represented the lowlands, while the sta- 155
tions of Görlitz (238 m a.s.l.), Jelenia Góra (342 m a.s.l.) 156
and Sniezka (1603 m a.s.l.) corresponded to uplands, 157
mountain foreland and mountains, respectively. For the 158
purposes of storm characteristics for the uplands, data 159
from Zielona Góra (192 m a.s.l.) was used due to no 160
records available from Görlitz. Based on the data, analy- 161
sis related to the course of mean annual values of partic- 162
ular thermal, precipitation, storm and snow indices in 163
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Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 3
Figure 1: The Polish-Saxon border region, its districts and hypsometric zones.
the considered multiannual period was carried out. The164
trends were examined from the perspective of their di-165
rections and statistical significance (level of 0.05) us-166
ing linear regression analysis. They were also verified167
with the Mann Kendall test. The data was examined168
from the perspective of its completeness and reliabil-169
ity. Homogeneity was tested with the Standard Normal170
Homogeneity Test (SNHT) (Alexandersson, 1986;171
Alexandersson and Moberg, 1997). The correlation172
coefficient was also calculated for the thermal, precipi-173
tation, snow and storm data between particular stations174
as well as between these stations and the stations lo-175
cated in the adjacent regions – Dresden (227 m a.s.l.)176
and Wrocław (120 m a.s.l.). Strong relationships, char-177
acterized by a statistical significance, were noticed for178
the thermal, precipitation and storm data. In the case179
of snow cover frequency, no significant correlation was180
found between the stations located lower down (includ-181
ing Dresden and Wrocław) and Sniezka. Such a situa-182
tion results from the totally different snow regime in the183
highest parts of the Sudetes Mountains when compared184
to the lower hypsometric zones.185
Furthermore, changes in climate conditions for the186
future periods were examined. They based on climate187
projections carried out by Climate & Environment Con-188
sulting Potsdam GmbH (Kreienkamp et al., 2013) for189
the needs of the NEYMO and KLAPS projects. The ba-190
sis for the projections development were global models191
simulations (ECHAM5 MPI-OM and MPI-ESM-LR).192
Regional Climate Model of WETTREG was used in193
terms of downscaling. Two approaches regarding down-194
scaling can be distinguished: dynamical (which uses re-195
gional climate models to carry out regional informa-196
tion consistent to the large scale data gained from the197
general circulation models) and statistical (concerning198
statistical relations between regional data and selected199
parameters of the general circulation models to access200
changes on a local scale) (Belli and Haberlandt,201
2012). WETTREG is a statistical type of model that202
was developed to evaluate climate projections for the re- 203
gion of Central Europe. The process of downscaling is 204
in this case related to the assessment of circulation con- 205
ditions, a stochastic weather generator and a statistical 206
regression method. In the case of circulation conditions, 207
WETTREG defines weather in various classes, depend- 208
ing on regarded meteorological factors. The stochastic 209
weather generator enables a development of various pro- 210
jections that are independent from each other and char- 211
acterized by equal probability. Statistical regression is 212
connected with calculations of parameters based on the 213
modeled simulations. Because of different approaches 214
related to downscaling, the simulations based on WET- 215
TREG model can differ from those carried out using dy- 216
namical downscaling. The differences can be noticeable 217
especially for precipitation projections. 218
In this study, WETTREG2013 method was used 219
which establishes statistical relationships between atmo- 220
spheric variables and climatic observations at the exist- 221
ing stations for 1971–2000 (Kreienkamp et al., 2013; 222
Pluntke et al., 2016). This period was considered in the 223
model validation as well as to compare the current and 224
projected data. In the case of the projections, RCP8.5 225
scenario was chosen. Although this scenario is gener- 226
ally characterized by a low probability, current trends 227
for some thermal indices in the discussed region suggest 228
that the conditions may change in the future in the way 229
presented within this scenario (Adynkiewicz-Piragas 230
and Miszuk, 2020). The recent report on global climate 231
changes showed that greenhouses gases concentration 232
has additionally risen since 2011, contributing to the 233
further increase in air temperature (IPCC, 2021). Thus, 234
it can be assumed that climate changes intensity, espe- 235
cially in terms of thermal conditions, are currently more 236
relevant to the pessimistic scenarios than to the opti- 237
mistic ones. Consideration of the worst possible scenario 238
can also contribute to the development of a vast range of 239
adaptation measures that would take into account each 240
aspect of the climate change impact. 241
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4 B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
Table 1: Selected thermal, precipitation, storm and snow indices for the considered sectors in terms of 1971–2015 observation period (green)and the projections for RCP8.5 for 2071–2100 (red).
Sector Tmax Tmean Tmax > 30 °C RR RR > 10 mm Stormy days SN > 10 cm
Biodiversity o o o oForestry o o o oAgriculture o o o oTransport o o o oTourism o o o oPublic health o o o o
In the analysis, projections concerning three realiza-242
tions for RCP8.5 were used. Each realization consisted243
of 10 runs. The values of selected indices were calcu-244
lated for each run for 2071–2100 and compared to the245
reference period of 1971–2000. Based on these results,246
mean differences for each realization were assessed.247
The range between the differences for particular realiza-248
tions was the basis for the evaluation of possible climate249
changes in the final decades of the 21st century. As pro-250
jections of precipitation totals developed within WET-251
TREG model are less accurate than for thermal condi-252
tions and show distinct trends for the summer and win-253
ter seasons (Umweltbundesamt, 2007), calculations of254
the totals for the warm half-year and the summer sea-255
son were additionally carried out. This results from the256
fact that precipitations in the growing season are cru-257
cial for the sectors affected by this variable (biodiversity,258
forestry, agriculture).259
2.3 Sectors of the Polish-Saxon region260
In the paper, a potential impact of climate changes on261
social-economic and environmental issues was exam-262
ined for several sectors that play an important role in263
the region. The characteristics of climate conditions con-264
cerned the changes that are unfavorable for selected sec-265
tors. In the case of the current conditions, the character-266
istics focused on the changes in selected meteorological267
variables in 1971–2015, while the climate projections268
concerned 2071–2100 period for RCP8.5 scenario. The269
results of the research of climate changes for both ob-270
servation and projected periods were the basis for the271
evaluation of probability of climate changes in terms272
of their negative influence on the selected sectors. They273
were eventually used in the risk analysis. (Table 1–2).274
In terms of biodiversity, species characteristic for275
different ecological areas (such as mountains, swamps,276
forests, etc.) as well as environment protection zones277
are noticed in the region. As almost 40 % of plants and278
2/3 of animal species in the region are directly connected279
with water ecosystems or swamps (Kowalczak et al.,280
2009), the appropriate state of biodiversity in the region281
mainly depends on water resources. Considering this282
aspect, variables of mean air temperature (Tmean) and283
annual precipitation totals (RR) were taken into account284
as the most important factors affecting ecological state.285
The studies concerning future forest conditions in286
Poland and Germany showed a high importance of cli-287
Table 2: Probability categories depending on criteria mentioned inTable 1.
Rank Probability Criteria fulfilled
1 Very low none2 Low one3 Medium two4 High three5 Very high four
mate factors, especially precipitations (Lasy Panst- 288
wowe, 2015; SMUL, 2014). The negative impacts of 289
climate changes, resulting from the changes in air tem- 290
perature, precipitations and their indirect consequences 291
can be crucial for coniferous forest (Durło, 2012; IOS, 292
2013; Kundzewicz, 2013). Furthermore, forest areas 293
are vulnerable to material losses due to strong wind and 294
storms (Spathelf et al., 2014). Therefore, the indices of 295
mean air temperature (Tmean) as well as the frequency of 296
storms (observation period) and annual precipitation to- 297
tals (RR; projected data) were taken into the analysis. 298
In the case of agriculture, the economic efficiency is 299
mainly related to water availability which depends on air 300
temperature (and consequently evaporation) and precip- 301
itations. The analysis based on climate projections con- 302
firmed progressing water deficit (Szwed et al., 2010). 303
As a result, for the purposes of probability evaluation, 304
changes in mean air temperature (Tmean) and annual pre- 305
cipitation totals (RR) were considered for both observa- 306
tion and projection data. 307
Tourism and public health sectors are mainly vulner- 308
able to heat stress (i.e., Amelung et al., 2007; Hajat 309
et al., 2010; Di Napoli et al., 2018). Therefore, the fre- 310
quency of heat days (Tmax > 30 °C) was considered in 311
the analysis. In the case of public health, the observed 312
frequency of stormy days and the projections of max- 313
imum air temperature (Tmax) were also used. Regard- 314
ing tourism issues, snow cover is also the crucial fac- 315
tor. Thus, the frequency of snow cover depth of more 316
than 10 cm (SN > 10 cm), suitable for skiing, was taken 317
into account. In the context of the future period, the in- 318
dex of mean air temperature (Tmean) was used as the fac- 319
tor determining the occurrence of snow cover. 320
The sector of transport is also affected by high air 321
temperature. This has influence on road and railway in- 322
frastructure, rolling stock as well as social comfort of 323
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B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 5
Table 3: Criteria of evaluation of selected sectors in terms of their sensitivity to climate changes.
Biodiversity Forestry Agriculture Transport Tourism Public health
Environmentprotection area
% of forest areas inthe region
% of agricultureareas in the region
Roads density Mean altitude Population(persons/km2)
Water andwater-related
habitats
% of coniferousforests in overall
forest area
% of arable lands % of roads leadingthrough forest areas
No. of beds inhotels/apartments
Persons > 65 yearsold (persons/km2)
Mean altitude % of orchards andplantations in the
region
Railways density No. of touristsvisiting the region
Children < 6 yearsold (persons/km2)
% of meadows andpastures in the
region
Density of roadswith high local
significance
Tourism movementintensity
No. of physicians(per 1000
inhabitants)
Health resorts
passengers and employees. Therefore, the variable of324
maximum air temperature (Tmax) was used for the eval-325
uation of probability for both observation and projected326
data. Considering safety and economic issues, analy-327
sis on frequency of storms (observation data) and daily328
precipitations exceeding 10 mm (RR > 10 mm; projected329
data) was carried out. The selection of such indices330
was indicated in the studies concerning this problem331
(i.e., Einchhorst, 2009; Nemry and Demirel, 2012;332
Christodoulou and Demirel, 2018).333
2.4 Probability of climate changes334
In terms of the observation data, the basis for probabil-335
ity assessment are the results of the trends. If a trend for336
a given index is characterized by unfavorable direction337
in the context of a selected sector and is characterized338
by statistical significance, the criterion for probability is339
considered as fulfilled. In the case of the climate pro-340
jections for RCP8.5, the crucial aspect is the difference341
between the far future (2071–2100) and the reference342
period (1971–2000). If the difference of a given index343
is unfavorable for a selected sector, the criterion is met.344
The higher number of fulfilled criteria for both obser-345
vation period and climate projections, the higher is the346
value of probability (Table 2). The probability of climate347
changes was evaluated for four hypsometric zones.348
2.5 Sensitivity to climate changes349
Sensitivity to climate changes of the selected sectors was350
classified into four different classes (low, medium, high,351
very high). For each of the sectors, several aspects were352
taken into consideration (Table 3). The evaluation was353
carried out for each of the communes of the region. Bas-354
ing on the criteria for each sector, the particular com-355
munes were assessed in the context of the comparison356
of the results to the entire Polish-Saxon border region.357
Each of the criteria was given the rank of sensitivity.358
Consequently, the general sensitivity was evaluated for359
a selected sector.360
The evaluation of biodiversity sensitivity was based 361
on a principle that small areas of environment protec- 362
tion regions and habitats are the most sensitive to cli- 363
mate changes (Reid, 2006). The sensitivity of biodiver- 364
sity sector was assessed basing on two criteria: envi- 365
ronment protection area in each commune and infor- 366
mation on water and water-related habitats, listed in 367
the standard data forms (SDF) of the special habitat 368
protection areas (SOO) of Natura 2000 regions. In the 369
case of forestry, large areas are covered by monocul- 370
tural coniferous forests that are very sensitive to influ- 371
ence of various factors (severe weather conditions, pol- 372
lution, etc.). Furthermore, studies devoted to this prob- 373
lem showed that mountain ecosystems are affected by 374
climate changes the most. As much as 60 % of species of 375
these ecosystems can vanish (Sadowski, 2013). There- 376
fore, the analysis on forestry considered the percentage 377
of the total forest area and coniferous forests as well as 378
the factor of altitude (mean value for each commune). 379
Agriculture terrains in the Polish-Saxon region cover 380
vast areas. The problem of weather affection is signif- 381
icant in the context of all types of cultivation. Thus, bas- 382
ing on information on land use, the analysis was car- 383
ried out for four criteria: agriculture areas, arable lands, 384
orchards and plantations, meadows and pastures. The 385
sensitivity of public health sector is mainly related to 386
population issues. This concerns especially the social 387
groups vulnerable to weather factors, like elders or chil- 388
dren, who are susceptible especially to heat stress oc- 389
currence. A very important aspect is also health care in- 390
frastructure. Therefore, the population indices and the 391
number of physicians were taken into consideration. 392
The significance of tourism sector depends on the num- 393
ber of tourists and developed tourist infrastructure. In 394
addition, altitude is also an important factor as moun- 395
tain regions are the most attractive for tourists. Thus, 396
the sensitivity analysis included the number of beds in 397
hotels/apartments, annual number of tourists, tourism 398
movement intensity (based of density of walking trails 399
and bicycle paths), mean altitude a.s.l. and the presence 400
of health resorts. In the case of transport, the most im- 401
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6 B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
Table 4: Risk matrix presenting probability of changes of the meteorological indices and the sensitivity of selected sectors to climate changes(red: very high risk, orange: high risk, yellow: moderate risk, green: low risk) (based on: Smolarkiewicz et al., 2011; modified).
RISK PROBABILITY
1 2 3 4 5
SEN
SIT
IVIT
Y 4 4 8 12 16 20
3 3 6 9 12 15
2 2 4 6 8 10
1 1 2 3 4 5
portant factor is the density of roads and railways, in-402
cluding the importance of local roads managed directly403
by local authorities. Because of storm impact, the per-404
centage of roads leading through forests was also con-405
sidered.406
The data used in the sensitivity analysis were derived407
from various sources, including environmental websites408
(http://crfop.gdos.gov.pl, https://natura2000.gdos.gov.409
pl; https://www.natura2000.sachsen.de), Statistics410
Poland (GUS; https://stat.gov.pl) Corine Land Cover411
database (https://land.copernicus.eu/pan-european/412
corine-land-cover/clc2018), State Statistical Office413
of Saxony (Statistisches Landesamt des Freistaates414
Sachsen), Eurostat database (https://ec.europa.eu/415
eurostat/data/database), tourism websites (https://416
www.kreis-goerlitz.de/city_info; http://www.b-tourist.417
eu; https://cardomap.idu.de), Provincial Centre for418
Geodesic and Cartographic Documentation (BDOT;419
https://www.geoportal.gov.pl) and DIVA GIS (https://420
www.diva-gis.org/Data).421
2.6 Risk evaluation422
Considering the results of probability and sensitiveness,423
risk levels for the selected sectors in the discussed region424
were evaluated. The risk assessment was carried out us-425
ing risk matrix (Table 4). Risk strictly depends on sen-426
sitiveness and the rate of probability of climate changes.427
Maximum risk level (‘very high’) is noticed under high428
rates of probability (4 or 5) and sensitivity (3 or 4). Us-429
ing risk matrix, risk evaluation for all of the considered430
sectors under climate change conditions in the discussed431
region was carried out.432
The sectors considered in this paper are affected by433
a vast spectrum of factors related to climate, social-434
economic and environmental conditions. Numerous435
studies were reviewed in order to evaluate the most im-436
portant indices for the evaluation of probability, sensitiv-437
ity and risk. Based on these assessments, the most cru-438
cial criteria were selected for the analysis. The impact439
of other factors on probability and sensitivity to climate440
changes cannot be denied because of a complex and dy- 441
namic structure of the considered sectors and uncertain 442
climate and social-economic conditions in the future. 443
Nevertheless, a relatively high number of the considered 444
criteria can approximate a possible influence of climate 445
changes on the selected sectors in the following decades 446
in the region. 447
3 Results 448
3.1 Probability of climate changes 449
In 1971–2015, one of the most important climate 450
features was increasing, statistically significant trend 451
of both mean and maximum annual air temperature 452
in the entire hypsometric profile. The most dynamic 453
changes were observed in the lowlands and moun- 454
tains, where mean air temperature increased at the rate 455
of 0.33–0.37 °C per decade. The growth for the an- 456
nual maximum values reached 0.39 °C per decade (Ta- 457
ble 5). In the uplands and mountain foreland, the rates 458
for mean and maximum air temperature amounted to 459
0.29–0.32 °C and 0.22–0.33 °C per decade, respectively. 460
Rising air temperature resulted in the positive trend of 461
heat stress conditions. The annual number of heat days 462
(Tmax > 30 °C) in the lowlands, uplands and mountain 463
foreland rose with the intensity of 1–2 days per decade. 464
In the mountains, such days usually appear sporadi- 465
cally or are not observed at all. In terms of precipita- 466
tions, neither of the considered stations was character- 467
ized by a statistically significant trend. It should be em- 468
phasized, that taking into account other numerous pre- 469
cipitation stations in the region, statistical significance 470
for 1971–2015 was noticed only for two of therm. In 471
both cases, the positive trends were observed which did 472
not have a negative impact on the selected sectors. In 473
the case of snow cover for skiing, a statistically signifi- 474
cant, negative trend was observed in the mountains. Re- 475
garding storms, a noticeable positive tendency was no- 476
ticed for the lowlands and uplands. In 1971–2015, the 477
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B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 7
Table 5: Rate of changes (per decade) in mean annual air temperature (Tmean), maximum air temperature (Tmax), annual number of heat days(Tmax > 30), annual precipitation totals (RR), frequency of snow cover depth exceeding 10 cm (SN > 10) and annual frequency of storms atthe stations representing various hypsometric zones in the Polish-Saxon border area for 1971–2015 (statistically significant trends markedin bold).
Station Zone Tmean
[°C]Tmax
[°C]Tmax > 30
[days]RR
[mm]SN > 10[days]
Storms[days]
Legnica Lowlands 0.33 0.39 2.04 1.69 −0.10 1.31Görlitz Uplands 0.32 0.22 1.21 1.26 0.01 1.79*Jelenia Góra Mountain foreland 0.29 0.33 1.33 13.59 0.62 0.27Siezka Mountains 0.37 0.39 – −47.81 −5.38 −0.45
* – data for storms frequency derived from the station of Zielona Góra.
Table 6: Range of changes (bandwidth between particular realizations) in selected climate factors between 2071–2100 and 1971–2000,according to RCP8.5 scenario (negative changes for considered sectors marked in bold).
Station Tmean [°C] Tmax [°C] Tmax > 30 [number of days] RR [%] RR > 10 [number of days]
Legnica 3.4 to 3.7 3.9 to 4.3 26 to 31 −9 to −2 −0.7 to 1.0Görlitz 3.4 to 3.8 3.7 to 4.1 22 to 25 −11 to −3 −2.2 to −1.1Jelenia Góra 3.4 to 3.7 3.9 to 4.3 20 to 24 −12 to −3 −2.0 to −1.0Siezka 3.6 to 4.0 3.8 to 4.2 – −17 to −10 −5.0 to −2.5
annual frequency of storms in these hypsometric zones478
increased by almost 6 (lowlands) and 8 days (uplands).479
In the context of climate projections based on480
RCP8.5 scenario, further intensive increase in air tem-481
perature, reaching as much as 4.0 °C, was simulated for482
the last three decades of the century (Table 6). A no-483
ticeable growth (3.7 °C to 4.3 °C) was also projected for484
maximum air temperature and modeled for the heat days485
frequency (for the stations located lower down). Thus,486
most of the projected thermal changes can be consid-487
ered as unfavorable in the context of their influence on488
the selected sectors.489
The projections related to precipitations simulate re-490
duction in the annual precipitation totals (RR) in the en-491
tire region. Their values can decrease more intensively492
in the regions located at higher altitudes. This nega-493
tive trend was also confirmed by the projected precip-494
itation totals for the warm half-year and the summer495
season. In this case, the rate of decrease can amount496
to 5?26 % for the warm half-year and 13?31 % for the497
summer months. Simultaneously, the negative tenden-498
cies are usually observed for daily precipitations exceed-499
ing 10 mm (RR > 10 mm), except the lowlands, where500
the number of such days can rise or fall by about 1 day,501
depending on run of the scenario. Thus, according to the502
WETTREG simulations, the further decrease in precip-503
itation totals can have a negative impact on biodiversity,504
agriculture, and forestry, while no significant increase505
in strong precipitations should not negatively affect the506
sector of transport. The results based on WETTREG507
model outputs can be different from those carried out508
using dynamical downscaling (such as those considered509
in Euro-Cordex project). Some of the projections for510
RCP8.5 scenario simulate the increase in precipitation511
totals and the intensification of heavy precipitations in512
the future. If such conditions were applied in the study,513
the rates of probability for biodiversity, agriculture and 514
forestry would be reduced by 1, potentially contributing 515
to the mitigation of risk levels. In the case of transport, 516
more frequent heavy precipitation events could increase 517
the rate of probability by 1 and also affect risk ranks. 518
Taking into consideration the probability of the neg- 519
ative impact of climate changes on the selected sec- 520
tors, the highest influence (and consequently the highest 521
probability rate) was observed for the sector of forestry 522
(Table 7). The observed or projected changes in thermal, 523
precipitation and storm conditions resulted in high (4) 524
or very high (5) probability value. The highest rank of 525
probability at the stations located lower down was no- 526
ticed for the sector of public health which was a result 527
of the changes in thermal conditions, heat stress fre- 528
quency and the number of storms. In the mountains, the 529
probability was ranked as low (2), because of no heat 530
stress occurrence and no significant trends for the in- 531
dex of storms. In the case of transport, the observed or 532
projected changes in thermal and storm conditions in 533
the lowlands and uplands contributed to the high prob- 534
ability level (4), whereas the rank of 3 was assessed for 535
the mountain foreland and mountains. According to the 536
analysis based on WETTREG model, the value of prob- 537
ability for transport was diminished in the entire region 538
due to no noticeable changes in the projected strong pre- 539
cipitations. In the case of biodiversity and agriculture, 540
the probability for the entire area reached the value of 4 541
due to increasing mean air temperature and projected 542
decrease in precipitation totals. The tourism sector is af- 543
fected by the increasing number of heat days in the lower 544
hypsometric zones, a negative trend of snow cover fre- 545
quency in the mountains and projected increase in mean 546
air temperature. As a result, this sector was given the 547
rank of 4 in the areas located lower down (lowlands, up- 548
lands, and mountain foreland) and 3 in the mountains. 549
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Table 7: Levels of probability of the negative impact of climate changes (based on the selected climate indices) on the considered sectors inparticular hypsometric zones.
Region Biodiversity Forestry Agriculture Transport Tourism Public health
Lowlands 4 5 4 4 4 5Uplands 4 5 4 4 4 5Mountain foreland 4 4 4 3 4 4Mountains 4 4 4 3 3 2
3.2 Sensitivity and risk analysis550
Basing on the considered criteria, the general sensitiv-551
ity level for the sector of biodiversity varied from low to552
very high (Fig. 2). The communes with the lowest sensi-553
tivity mainly concerned the regions used for agriculture554
purposes with a low percentage of forests and without555
environment protection areas. The highest rank of sensi-556
tivity was usually given to the regions with large forest557
areas located in the north as well as to the communes558
where natural environment contributes to the develop-559
ment of water and water-related habitats.560
As the probability of the negative climate changes in561
the entire regions was the same (4), the risk map was562
a deflection of spatial distribution of sensitivity classes.563
Thus, the highest risk was noticed in forests areas and564
in the regions characterized by a high value of natural565
environment conditions, such as Karkonoski National566
Park in the Sudetes Mountains.567
The highest level of sensitivity for forestry was ob-568
served for the areas located in the Sudetes Mountains569
where coniferous forests are predominant (Fig. 3). In the570
German region, the communes of Jonsdorf and Oybin,571
located above 450 m a.s.l., were also very sensitive. In572
the lower hypsometric zones, such a level was usually573
noticed in the north, where the percentage of forest is574
very high.575
In terms of risk map, the highest risk level was pro-576
jected for the northern part of the region, especially in577
the communes where coniferous forests are predom-578
inant. Such a risk rank was also observed for sev-579
eral communes representing the mountain foreland and580
mountains. The lowest risk was mainly observed in the581
regions where forests cover less than 5 % of the area.582
In the case of agriculture, most of the communes583
(57 %) were characterized by medium sensitivity. The584
lowest ranks were the most frequent in the communes585
with a high percentage of forest areas and/or in the586
mountains (Fig. 4). The highest sensitivity was noticed587
for the communes of Sulików and Zgorzelec (Poland)588
and the communes located in the middle part of the Ger-589
man region. This resulted from a very high percentage590
of arable lands and other agriculture areas.591
The probability of climate changes in the whole re-592
gion was characterized by the same level (4). Therefore,593
similarly to the forestry sector, the risk map was a di-594
rect deflection of the sensitiveness analysis. Thus, the595
highest risk level was observed for the communes with596
a high percentage of homogeneous agriculture areas, es-597
pecially in Sulików and Zgorzelec and in the German598
areas located in in the middle and southern part of the 599
region. 600
Considering the sector of public health, the highest 601
number of communes were characterized by medium or 602
low sensitivity (Fig. 5). The lowest level mainly con- 603
cerned the forested northern areas, while a very high 604
sensitivity was noticed for the densely populated re- 605
gions with a high number of children and elders. Such 606
a level was mainly characteristic for well-developed set- 607
tlements, including single municipalities in the central 608
and northern part of the region. 609
Therefore, a very high risk level was observed in the 610
highly populated communes, where the negative climate 611
changes can affect the public health the most. In the 612
mountains, the risk ranks were usually lower because of 613
no heat stress occurrence. The lowest level was noticed 614
in several Polish communes located in the mountains 615
and mountain foreland where the population density is 616
very low (≤ 50 persons/km2). 617
The southern areas, especially the Sudetes Moun- 618
tains and a part of the Zittauer Mountains, were given 619
a very high rank of sensitivity for tourism (Fig. 6). They 620
are characterized by a high tourism attraction, including 621
skiing. On the other hand, the lowest values were ob- 622
served in the lowlands where medium or low sensitivity 623
was noticed. The differences in the sensitivity between 624
the Polish and the German lower parts of the region were 625
caused by a higher density of tourism infrastructure in 626
Germany (such as bicycle paths and accommodations). 627
As a result, the highest risk was noticed in the moun- 628
tainous part of the region, especially in the communes 629
with health resorts – Jonsdorf, Swieradów-Zdrój and the 630
Municipality of Jelenia. Most of the remaining parts of 631
the Sudetes and Zittauer Mountains was characterized 632
by the class of high risk. This included the highest part of 633
the mountains, where (despite very high sensitivity) the 634
probability of the negative climate changes was lower 635
because of no heat stress problems. 636
The sensitivity of the sector of transport mainly de- 637
pends on the density of transport facilities (roads, rail- 638
ways). The highest number of communes in the region 639
was regarded as highly sensitive (almost 45 % of com- 640
munes), while a very high rate was usually observed for 641
the municipal areas and the communes located in the 642
mountains or mountain foreland. Higher ranks were also 643
observed in the areas with a high number of populations 644
which contributes to a high density of roads and railways 645
(Fig. 7). 646
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B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 9
Figure 2: Sensitivity to climate changes and risk assessment for the sector of biodiversity in the Polish-Saxon region (considering RCP8.5scenario).
Figure 3: Sensitivity to climate changes and risk assessment for the sector of forestry in the Polish-Saxon region (considering RCP8.5scenario).
Figure 4: Sensitivity to climate changes and risk assessment for the sector of agriculture in the Polish-Saxon region (considering RCP8.5scenario).
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10 B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
Figure 5: Sensitivity to climate changes and risk assessment for the sector of public health in the Polish-Saxon region (considering RCP8.5scenario).
Figure 6: Sensitivity to climate changes and risk assessment for the sector of tourism in the Polish-Saxon region (considering RCP8.5scenario).
Figure 7: Sensitivity to climate changes and risk assessment for the sector of transport in the Polish-Saxon region (considering RCP8.5scenario).
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B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 11
As a result, the moderate risk class was predominant647
and was ranked for almost half of the communes. A648
very high risk category was given to the communes649
representing the municipal areas with a high density of650
roads and railways. Despite high or very high sensitivity,651
the mountains were usually characterized by moderate652
risk, because of lower values of probability.653
4 Discussion654
4.1 Climate changes655
The analysis of thermal conditions presented in the pa-656
per confirmed the results carried out in the previous657
studies that both mean and maximum air temperature658
as well as the frequency of heat days have significantly659
risen over the last decades in this area (Mehler et al.,660
2014; Pluntke et al., 2016; Miszuk, 2021). On the661
other hand, the observed changes in annual precipitation662
totals do not show homogeneous and statistically signifi-663
cant trends, which was also noticed in the papers devoted664
to this problem in Germany (Zebisch et al., 2005; DWD,665
2020) and Poland (Marosz et al., 2011; Łupikasza and666
Małarzewski, 2021). In the case of snow cover fre-667
quency, the rate of decrease was slightly more inten-668
sive than in the Eastern Sudetes Mountains (Urban,669
2015). Statistically significant negative trends of snow670
cover duration were also noticed in Germany and the671
coastal regions of Poland (Kreyling and Henry, 2011;672
Tomczyk et al., 2021). In the case of storms, the pos-673
itive tendency in the lower hypsometric zones corre-674
sponds to the rising trends observed for north-western675
and eastern Poland (Kirschenstein and Chlost, 2018;676
Bielec-Bakowska et al., 2021).677
Regarding the projected climate changes under678
RCP8.5 scenario, the increase in air temperature and679
decrease in precipitation totals are projected, con-680
firming the results obtained for Poland and Germany681
(Buth et al., 2015; Jagiełło et al., 2019; Szwed,682
2021), including the considered region (Lünich et al.,683
2014; Schwarzak et al., 2014; Pluntke et al., 2016;684
Adynkiewicz-Piragas and Miszuk, 2020). However,685
it is worth mentioning that some projections based686
on dynamic downscaling (i.e., in Euro-Cordex project)687
show a positive tendency of the annual precipitation to-688
tals, according to this scenario in the discussed region689
(Kahlenborn et al., 2021; Pinskwar and Chorynski,690
2021). The analysis on heat days occurrence showed a691
possible intensification of heat stress in the future, which692
was also indicated in the projections carried out for both693
states (Schwarzak et al., 2014; Miszuk et al., 2016;694
Brecht et al., 2020). The simulations of heavy precipi-695
tations frequency, carried out using WETTREG model,696
do not show a significant increase in the future, which697
is a favourable factor, especially for transport. How-698
ever, similarly to the projected precipitation totals, the699
direction of changes in the region can be different de-700
pending on applied models (Kahlenborn et al., 2021;701
Pinskwar and Chorynski, 2021). If to consider the702
simulations presenting the rising tendency, the impact 703
of heavy precipitations for the sector of transport would 704
be more intensive. 705
4.2 Forestry and biodiversity 706
The results of sensitivity to climate changes and risk 707
assessment for the selected sectors, supported by the 708
analysis of probability of climate changes, showed that 709
large forest areas in the northern part of the region con- 710
tributed to the very high level of sensitivity and risk 711
for biodiversity and forestry. In this context, the moun- 712
tains are also significantly impacted because of a high 713
percentage of coniferous forests and unique habitats. A 714
similar situation was observed in the Alpine regions, be- 715
cause of abundance of endemic species (Zebisch et al., 716
2005; Buth et al., 2015). The negative influence of 717
warming and diminished precipitations can cause seri- 718
ous problems for biodiversity and forestry (Reid, 2006; 719
Schröter et al., 2006; Kundzewicz and Matczak, 720
2012; IOS, 2013; Spathelf et al., 2014; Kahlenborn 721
et al., 2021). If such climate changes continue, a poten- 722
tial loss of species in the German part of region can 723
amount to 50 % (Zebisch et al., 2005). The studies on 724
vulnerability to climate changes showed that eastern and 725
southeastern Germany are one of the most vulnerable re- 726
gions (Schröter et al., 2006; Buth et al., 2015). A spe- 727
cial attention should be paid to water and water-related 728
habitats that are very sensitive to climate changes (IOS, 729
2013; Schliep et al., 2018; Kahlenborn et al., 2021) 730
and which structure can noticeably change, especially 731
under RCP8.5 conditions (Kundzewicz et al., 2018; 732
Kahlenborn et al., 2021). 733
4.3 Tourism 734
The mountain regions are also exposed to the high im- 735
pact of climate changes on tourism. Although the neg- 736
ative influence of heat stress is rarely observed in this 737
area, the decreasing frequency of snow cover can se- 738
riously limit the winter tourism. This concerns espe- 739
cially the lower mountain zones where skiing condi- 740
tions can deteriorate the most (Zebisch et al., 2005, Hoy 741
et al., 2011; Kundzewicz and Matczak, 2012; IPCC, 742
2014; Kahlenborn et al., 2021). High levels of sen- 743
sitivity and risk in the mountains of the Polish-Saxon 744
region confirm the analysis caried out for Germany. 745
They showed that all the mountain regions are very vul- 746
nerable to climate changes in terms of winter tourism 747
(Schröter et al., 2006; Kahlenborn et al., 2021). The 748
presence of health resorts additionally increases the sen- 749
sitivity to climate changes. In the regions located lower 750
down, the main factor contributing to the moderate risk 751
level is the increasing frequency of heat stress occur- 752
rence (Zebisch et al., 2005; Amelung et al. 2007; IOS, 753
2013). In the entire region of Germany, the moderate 754
levels of vulnerability and risk were mainly assessed 755
for the tourism forms not related to winter activities 756
(Schröter et al., 2006; Kahlenborn et al., 2021). 757
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12 B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region Meteorol. Z. (Contrib. Atm. Sci.)PrePub Article, 2021
4.4 Agriculture758
The main factors contributing to the very high ranks of759
sensitivity and risk for agriculture are the changes in760
thermal and precipitation conditions as well as a high761
percentage of arable lands and other agriculture areas.762
High temperatures and insufficient water supply can po-763
tentially cause economic losses (Zebisch et al., 2005;764
Schröter et al., 2006; Ministerswo Srodowiska,765
2013; Buth et al., 2015; Kundzewicz et al., 2018;766
EEA Report, 2019; Kahlenborn et al., 2021). Ac-767
cording to the analysis carried out for Germany, the768
sector of agriculture in the eastern regions is character-769
ized by a high vulnerability to climate changes (Zebisch770
et al., 2005; Schröter et al., 2006). The minor levels771
of sensitivity and risk were evaluated for the mountains772
of the Polish-Saxon region, which is in accordance to773
the analysis of vulnerability for Germany (Schröter774
et al., 2006). The further climate changes, contributing775
to the prolongation of growing season and affecting wa-776
ter balance, can result in the necessity of modification777
of crop structure in this part of Europe (Kundzewicz778
and Matczak, 2012; IOS, 2013; Buth et al., 2015;779
EEA Report, 2019; Graczyk et al., 2021). The analy-780
sis on potential climate changes showed, that crop yields781
in Poland and Germany, including the Polish-Saxon re-782
gion, can be significantly diminished due to limited783
water supply in the following decades of the century784
(Szwed et al., 2010; IOS, 2013; IPCC, 2014).785
4.5 Public health786
In terms of public health, high levels of sensitivity787
and risk confirmed the problems of depopulation and788
the increasing percentage of elders among the habi-789
tants of the region. The sensitivity to weather impact790
is also dependent on access to health and welfare ser-791
vices (O’Neill et al., 2009; IPCC, 2014). In the dis-792
cussed region, the main factor affecting sensitivity in793
the German part was a high number of people aged794
over 65 years, while in the Polish area, a relatively795
low number of physicians was the important issue. The796
larger cities of the region are also characterized by urban797
heat islands occurrence (IOS, 2018, REGKLAM, 2013).798
Its influence is noticeable especially under heat stress799
conditions which are the main weather factor affecting800
the human health (Zebisch et al., 2005; Szwed et al.,801
2010; Kundzewicz and Matczak, 2012; IOS, 2013;802
Buth et al., 2015; Ministerstwo Srodowiska, 2015;803
Kundzewicz et al., 2018; Mücke and Litvinovitch,804
2020; Kahlenborn et al., 2021). Regarding the vulner-805
ability of this sector, the southeastern regions of Ger-806
many was classified as highly vulnerable (Schröter807
et al., 2006). Further increase in air temperature can sig-808
nificantly increase the mortality in the future, especially809
under such pessimistic scenarios like RCP8.5 (Mücke810
and Litvinovitch, 2020). Simultaneously, the human811
health in the following years can be also affected by a812
rising tendency of extreme weather events, like storms813
or strong wind (Kundzewicz and Matczak, 2012; 814
Ministerstwo Srodowiska, 2013; Buth et al., 2015; 815
Kahlenborn et al., 2021). 816
4.6 Transport 817
In the case of transport, the maximum ranks of sensitiv- 818
ity and risk resulted from the highest number of trans- 819
port facilities in these areas. A high probability level 820
for the changes in thermal conditions and the frequency 821
heavy precipitations and storms were also the noticeable 822
factors. These variables significantly affect the trans- 823
port sector (Zebisch et al., 2005; IOS, 2013; Buth et al., 824
2015; Christodoulou and Demirel, 2018; IOS, 2018; 825
Kahlenborn et al., 2021). High values of air temper- 826
ature and heavy precipitations have an impact on road 827
accidents and erosion of slopes in the mountains, while 828
storms can negatively affect rail traffic through damag- 829
ing contact lines, breaking trees and flooding parts of 830
railway tracks (Zebisch et al., 2005; IOS, 2013; Min- 831
isterstwo Srodowiska, 2013; Christodoulou and 832
Demirel, 2018; UNECE, 2020). Considering a pes- 833
simistic scenario, the risk level for the transport sector 834
in Germany can be assessed as medium (Kahlenborn 835
et al., 2021). The medium level of vulnerability was also 836
assessed for the land of Saxony (Schröter et al., 2006). 837
4.7 Limitations 838
The results carried out in this study based on the selected 839
methods of evaluation of probability, sensitivity and risk 840
related to climate changes. The selection of meteoro- 841
logical variables for the purposes of probability eval- 842
uation was conducted on the basis of various research 843
outcomes concerning this problem. As a result, the most 844
important meteorological indices were selected. Never- 845
theless, the impact of other variables (and consequently 846
their influence on probability results) cannot be ruled out 847
because of a complex nature of the considered sectors. 848
Similar conditions can be defined in terms of sensitivity 849
and risk analysis. Although the selected criteria repre- 850
sented very important features and needs of particular 851
sectors, there may be a lot of different factors that can 852
affect the sensitivity to climate changes. The other lim- 853
itations concern climate scenarios and projections. The 854
selection of the most pessimistic scenario (RCP8.5) was 855
determined by the current trends of some variables and 856
the necessity for the development of the maximum level 857
of climate adaptation measures. However, it should be 858
emphasized that new global and national legal regula- 859
tions related to greenhouse emission may contribute to 860
the mitigation of climate changes intensity in the fu- 861
ture. Uncertainties can be also noticed in the case of the 862
selected climate model. The specific settings of WET- 863
TREG model in terms of precipitations can modify the 864
results of probability for the sectors dependent on this 865
variable. If to consider an increase in precipitation to- 866
tals projected by other models, the levels of probability 867
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B. Miszuk et al.: Climate changes and their impact on sectors of the Polish-Saxon border region 13
of climate changes for biodiversity, forestry and agricul-868
ture would be lower. Nevertheless, these sectors were869
originally given high or very high ranks of probability870
of climate changes. If they were decreased by 1, the risk871
levels in the communes with significant sensitivity val-872
ues would still be high or very high. On the other hand,873
the projected intensification of strong precipitations by874
the models related to dynamic downscaling can increase875
the probability and consequently risk ranks for the sector876
of transport. Taking into account all the limitations, the877
final results of risk analysis can slightly vary depending878
on selected criteria, climate models and scenarios. How-879
ever, the results carried out in this study are in many880
cases similar to the outcomes for the other regions of881
Germany and Poland obtained using different methods.882
5 Conclusions883
The results presented above indicate that in terms of sen-884
sitivity and risk related to climate changes, the discussed885
region is varied depending on sectors. Based on the ob-886
tained results, the following conclusions can be formu-887
lated:888
• Observed and projected changes in selected meteoro-889
logical variables mostly confirm the previous results890
on climate changes in this part of Europe. If such891
a trend continues, this can contribute to the further892
intensification of climate stress on various social-893
economic and environmental sectors.894
• Significant parts of the region are characterized by895
the highest values of sensitivity which along with896
noticeable climate changes result in very high risk897
levels for some of the areas.898
• Sensitivity and risk related to climate changes are899
characterized by a high spatial variability, resulting900
from the geographical factors and land use. This901
shows that the impact of climate conditions and con-902
sequently the need for adaptation measures can sig-903
nificantly vary even in a relatively small region.904
• A vast range of risk levels for each of the sectors in-905
dicates that potential adaptation measures should be906
tailored carefully depending on the most character-907
istic features of a given area (i.e., a special attention908
should be paid for public health and transport in ur-909
ban areas).910
• The results on sensitivity and risk usually confirm the911
previous outcomes on the impact of climate changes912
on social-economic and environmental sectors in913
Germany and Poland. This indicates that these sec-914
tors are affected by the climate factor in the region,915
regardless which scientific methods are used in the916
evaluation. However, it should be emphasized that917
results of the research, especially those based on cli-918
mate projections, are strongly dependent on applied919
models and simulations.920
• The outcomes of this study can be a basis for fur- 921
ther analysis also considering adaptation potential of 922
the region. Consequently, this will contribute to the 923
development of adaptation measures which should 924
minimize the negative impact of climate changes on 925
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