Statement of user requirements for data products from the

database

Lill Tove Norvang Nilsen and Berit Kjeldstad

Department of Physics,

Norwegian University of Science and Technology,

Trondheim, Norway

Objectives and input to WP1:determine data product requirements

• Evaluate needs of end-users– Internal (I.E.U) and external (E.E.U)

• Data products from the database

• Statement of user requirements– (search tools, data and data products)

• Report to be used by BAS (software tool options and for UV climatology analysis.

150 external users contacted

Responsible contact person(s):

Describe your main area of work or research:

Do you currently use estimates or measurements of surface UV levels?

Would you like to use estimates or measurements of UV levels?

Would you be interested in providing feedback about your needs for UV data or estimates to the project?

Comments:

• 65 responded (45%)

Who has been contacted

• All groups suggested by internal users.

• References in review papers about UV effects

• Announcement in Newsletter of the European Photobiology Society.

• Detailed list available (confidential)

50 ”comprehensive” answers (30%) :

• 1. Any specific requirements regarding data and data format? What data do you need? Spectral, broadband, ancillary data? Sampling frequency and wavelength-range?

• 2. Any specific data products you need? Daily, monthly, yearly UV dose or any weighted numbers - what weighting-function? Interpolated data - which numbers? Max./min. intensities? UV Index?

• 3. Are there any specific search-possibilities you need? (selection of wavelengths, zenith-angles, dates, instrument-types, stations etc.)

• 4. Any other requirements for information on instruments, stations or other?

Field of interest and countryTable 1. Number of users providing requirement, distributed according to field of interest andcountry.Country Aquatic

EcosystemsTerrestrial

EcosystemsHumanHealth

Animals AtmosphericProcesses

Materials UVMonitoring

Numberof users

fromeach

countryCzeckRebublic

1 1 1 1

Finland 2 5 1 1 1 9France 1 1Germany 2 1 1 1 3Greece 1 1Netherlands 1 1 2Norway 3 4 1 1 1 2 9Poland 1 1 2 2Slovakia 1 1Slovenia 1 1 1 1 2Spain 2 2 1 1 2Sweden 1 2 2 1 6UK 1 2 4 1 8Australia 2 2 2WHO 1 1Total 12 11 23 1 6 2 13 50

E.E.U.: Data products requested

Number of users requesting each data product

29

17

9

13

28

911

21

0

5

10

15

20

25

30

35

40

45

50

UV-dose, daily UV-dose,monthly

UV-dose,yearly

Maximum UV-irradianceduring the

day.

Weightingfunctions.

UV-indexthroughout the

day.

Maximumdaily UV-

index.

Interpolated orestimated UV-

data.

Type of requirement

Nu

mb

er o

f u

sers

E.E.U.: Daily UV doseNumber of users requesting different types of daily UV-dose

(Totally 29 users requesting daily UV-dose)

15

15

24

12

4

12

8

a. UV-dose, daily, UVB

b. UV-dose, daily, UVA

c. UV-dose, daily, Total UV

d. UV-dose, daily, CIE-weighted

e. UV-dose, daily, DNA-weighted

f. UV-dose, daily, MED

g. UV-dose, daily, Weighted with general plant action spectrum.h. Dose, daily, Visible/PAR

E.E.U.: Weighting functions

Number of users requesting different weighting functions(Totally 28 users reqesting weighting functions)

19

9

11

11

2

1

11

31. CIE-weighting spectrum.

2. DNA-damage.

3. Photocarcinogenesis.

4. Vitamin D3 synthesis.

5. The contact hypersensitivity action spectrum.

6. Urocanic acid isomerisation action spectrum.

7. Photoinhibition of phytoplankton.

8. Algae, phytoplankton and macroalgae.

9. Generalised plant action spectrum.

10. Daily biologically effective irradiance (UVB BE)(Function 9 normalised to 300 nm).

E.E.U.: Monthly UV doseNumber of users requesting different types of monthly UV-dose

(Totally 17 users requesting monthly UV-dose)

4

5

12

7

1

1

4

a. UV-dose, monthly, UVB

b. UV-dose, monthly, UVA

c. UV-dose, monthly, Total UV

d. UV-dose, monthly, CIE-weighted

e. UV-dose, monthly, DNA-weighted

f. UV-dose, monthly, Weighted with general plant action spectrum.

g. Dose, monthly, Visible/PAR

E.E.U.: Yearly UV dose

Number of users requesting different types of yearly UV-dose(Totally 9 users requesting yearly UV-dose)

1

1

9

2

1

1

a. UV-dose, yearly, UVB

b. UV-dose, yearly, UVA

c. UV-dose, yearly, Total UV

d. UV-dose, yearly, CIE-weighted

e. UV-dose, yearly, DNA-weighted

f. UV-dose, yearly, MED

Other data products (<15%)

• Maps of Europe (5 answers)– Isodose maps (4)– Isodose maps for cloud free conditions (1)– Horizontal UVR maps (1)– UV index (2)

• Available methods to calculate (7 answers)– Ozone depletion (3), ozone values (1), cloud

level (1),

E.E.U.: Search tools

Number of users requesting each search tool

15

11

18

11

17

0

5

10

15

20

25

30

35

40

45

50

Wavelength orwavelength range.

Dates. Stations. Instrument types. Stations ormeasurements withinthe visible wavelength

region.Type of requirement

Nu

mb

er o

f u

sers

E.E.U.: Data reqiurements

Number of users requesting each data requirement

47

30

8

11

8

0

5

10

15

20

25

30

35

40

45

50

Spectral data Broadband data Long time series of UV-data.

Measurements fromareas possibly outside

EDUCE stations.

Any ancillary dataavailable.

Type of requirement

Nu

mb

er

of

users

E.E.U. Spectral dataNumber of users requesting different types of spectral data

(Totally 47 users requesting spectral data)

17

9

46

14

1

a. Spectral UVB

b. Spectral UVA

c. Spectral, Total UV

d. Spectral, Visible

e. Spectral, Near infrared

E.E.U.: Broadband dataNumber of users requesting different types of broadband data

(Totally 30 users requesting broadband data)

27

24

13

23

a. Broadband UVB (280-315 nm).

b. Broadband UVA (315-400 nm).

c. Broadband PAR (400-700 nm).

d. Broadband Photopic, around 550 nm.

e. Broadband Infrared and near infrared.

Summary E.E.U:Data products• All highly welcome a database• Daily UV dose (58%),

– Total UV (83%), UVB and UVA (42%)

• Availability of different weighting spectra (56%)– CIE spectrum (68%)– Generalized plant action spectrum (39%)– DNA-damage sepctrum (32%)

• Interpolated data between EDUCE stations (42%)• Few requested ozone data and UV

forecast(<10%)

Summary E.E.U:Search tools

• Stations (36%), wavelength range (30%), dates and instruments (22%). (All criteria suggested in the questionnaire.)

• However, 34% request stations with visible data (not included in questionnaire form)

Summary E.E.U: Data

• Spectral data (94%), total UV (99%), UVB (36%), UVA (19%), visible data (30%)

• Broad band data (63%)

• Interpolated (or estimated) data (between stations) (42%)

• Measurements outside EDUCE stations (22%)

Special comments by external users:• Possibilities to calibrate their own instruments.• Some ask for the calibration procedures used in

the project.• Some has asked to submit their own data.• Few users have asked to get in contact with

groups within EDUCE.

• Information about the database has been disseminated to many potential new users.

Internal end users (I.E.U.)

• Following question to all participants:

• Can you describe what you need to perform your EDUCE tasks, and to specify clearly tools and data products that you need or that would simplify your work.

• More specific:

Which task(s) do you have in the EDUCE project (Work package; Deliverables; Milestones)?

Which data do you require to perform your EDUCE tasks?(Spectral, broadband, ancillary data, …)

Which data products do you require to perform or simplify your tasks?(Daily UV or CIE-weighted doses, maximum intensity during the day, …)

What information about the measurement sites do you require to perform your EDUCE tasks?

What information about the instruments do you require to perform your EDUCE tasks?(Slit function, wavelength range, sampling frequency, …)

Which flagging procedures for data quality do you require to perform your tasks?(Wavelength-shift, cosine-correction, …)

Which search procedures in the database do you require to perform or simplify your tasks?(If you have already supplied information on search requirements to Tim, then you do not need to repeat yourrequest here)

Do you have other comments or requirements, please describe them.

Data products, Search tools, Data requirementsNumber of different requirements requested by the EDUCE participants

according to workpackage

0

5

10

15

20

25

1. UVClimatology

2. Trenddetection anddata analysis

3. Datacollection andsubmission

4.Maintenance,managementand extension

of thedatabase

5.Development

of userfacilities at the

database

6. Qualityassurance atthe database

7. Qualityassurance andquality control

at themeasureing

sites

8. Modeldevelopment

Workpackage

Nu

mb

er o

f diff

eren

t req

uir

emen

ts

Data products

Search tools

Data requirements

No requirement

I.E.U. Dataproducts• Daily UV (5)

• Daily CIE weighted (4)(or any weighting function(1))

• Daily maximum UV irradiance (2)

• Local noon CIE doses* (1)

• UV index throughout the day (1)

• Zenith sky radiance * (1)– *(requested by 2 groups)

I.E.U. Search tool requirementsType of requirement WP no. Contr. /

Subcontr. no.Number ofInsitutes

Easy accessible data and easy to understand useof database.

1, 3, 6, 7 7 1

Search possibilities as presented in prototype toparticipants. *1)

2, 3, 4, 5, 7 1, 3 2

Search on wavelength or wavelength range. 1, 6 6 1Search on dates. 1, 2, 3, 6, 7 1, 6, 7 3Search on solar zenith angles (range and singlevalues).

1, 2, 3, 6, 8 1, 6, 13, vi 4

Search on stations. 1, 3, 6, 7 6, 7, vi 3Search on latitude. 3 vi 1Search on longitude. 3 vi 1Search on ozone concentration. 1, 2, 3, 6 1, 6, vi 3Search on clarity index or cloud level. 3, 8 13, vi 2Search on stations presenting CIE-weighted dailydoses.

1, 6 6 1

Search on stations with pyranometer data. 1, 2, 3, 6, 7 1, 6, 7 3Search on stations with broadband data. 2 1 1Search on stations with measurements availablefor given period.

1, 3, 6, 7 7 1

Search on stations with cosine corrected spectra. 1, 3, 6, 7 7 1

I.E.U. Data requirementsType of requirement WP no. Contr. /

Subcontr. no.Number ofInsitutes

Spectral UV data. * 1, 2, 3, 5, 6, 7, 8 1, 3, 4, 6, 7, 13,vi

7

Broadband UV data. * 1, 3, 4, 5, 6, 7 3, 6, vi 3Pyranometer data. 1, 2, 3, 6, 7 1, 6, 7 3Long time series of UV-data. 2 1 1All METADAMA information. 4 9 1Any ancillary data available. * 1, 2, 3, 4, 5, 7 1, 3, 4, 9 4Information on solar zenith angle. 2 1 1Information on latitude. 1, 2, 3, 4, 5, 6, 7, 8 1, 3, 6, 8, 9 5Information on longitude. 1, 2, 3, 4, 5, 6, 7, 8 1, 3, 6, 8, 9 5Information on altitude. 1, 2, 3, 4, 5, 6, 7, 8 1, 3, 6, 8, 9 5General information on the conditions duringmeasurements.

1, 2 4 1

Measurements of/information on cloudiness. 1, 2, 6, 8 1, 4, 6, 13 4Measurements of visibility. 2 1 1Measurements of ozone content. (Or link to suchdata or nearest station)

1, 2, 3, 4, 5, 6, 7 1, 3, 4, 6, 7 5

Measurements of aerosol content. 2 1 1

Type of requirement WP no. Contr. /Subcontr. no.

Number ofInsitutes

Information on/measurements of albedo. 1, 2, 3, 4 1, 4, 9, vi 4Information on topography; altitude and slopeinformation.

1, 2, 3, 8 1, 4, 8, vi 4

Information on horizon. 4 9 1Information on type of instrument. 2 1 1Data about the spectral and broadbandmeasurement systems and procedures.

3, 4 9, vi 2

Information about drift of calibration lamps. 2 1 1Information on instrument temperature ortemperature dependence.

3 vi 1

Uncertainty estimates for measurements. 2 1 1Information on wavelength range. * 1, 2, 4, 6 1, 6, 9 3Information on sampling frequency. * 1, 2, 4, 6 1, 6, 9 3Information on wavelength shift. * 1, 2, 3, 4, 5, 6, 7 1, 3, 6, 7, 9, vi 6Information on spectral function. 3 vi 1

Information on cosine correction. * 1, 2, 3, 4, 5, 6, 7 1, 3, 4, 6, 7, 9, vi 7

Information on cosine error. 1, 6 6 1

Information on angular response. 1, 3, 4, 5, 6, 7 6, 7 2

Information on scanning parameters. 1, 3, 6, 7 7 1

Information on slit function. * 1, 2, 3, 4, 5, 6, 7, 8 1, 4, 6, 7, 8, 9 6

Information on FWHM. 3, 4, 5, 7 3 1

Information on stray light. 3 vi 1

The number of available spectra per day forchosen period.

1, 3, 6, 7 7 1

Information on what data products that areavailable.

3, 4, 5, 7 3, 9 2

Summary I.E.U comments

• Very specific needs

• Few data products

• Detailed list of data requirements

• Anxillary data

• Few supplementary comments

Comparison external and internal end users

• External users focused on data products and less on data requirements, compared with internal users

• Same type of search tools requested by the two user groups.

What can be done to fulfil external user’s requirements

• Total UV is requested. What about stations with single brewers.

• Visible light requested. Few stations with anxillary visible data.

• Extrapolated UV doses. Will the maps be sufficient ?