Report on DWD activities and plans - ECMWF...GEMS Assembly, Reading, 6-10 Feb 06 (06-02-23)Report on DWD activities and plans Harald Berresheim, Harald Flentje German Weather Service,

GEMS Assembly, Reading, 6-10 Feb 06 (06-02-23)

Report on DWD activities and plans

Harald Berresheim, Harald FlentjeGerman Weather Service, Met. Obs. Hohenpeissenberg

Outline

• Activities in months 1-12 (AER, GRG)

• Evaluation: selection of events

• Plans for months 13-30 (AER, GRG)

• Needs & open questions


Activities I

• Established/configured access to ECMWF data server MARS

• Introduced GEMS during GMES-, GAW-, NDSC-, and CO-Workshops

• Requested data from networks and stations

• Data survey → compiled tables of coverage of AOD and selected gases in GAW data bases

• Retrieved 2003 data from GAW data bases

• Set up data handling routines


Activities II (AER 4.2)

• Comparison of aerosol model AOD from sea salt and desert dust with AOD observations at 13 GAW stations:

• filter according to Angstrom parameter (particle size)

• select episodes with Sahara dust observed at GAW stations

• select sea salt episodes/stations

• Select events in 2003 where desert dust, forest fire or sea saltparticles


Activities III (GRG 4.1)

• Established/configured access to ECMWF data server MARS

• Introduced GEMS during GMES-, GAW-, NDSC-, CO-Workshops

• Requested data from networks and stations

• Data survey → compiled tables of coverage of AOD and selected gases in GAW data bases

• Retrieval of 2003 data from GAW data bases

• Set up data handling routines


GAW Data Centreshttp://wdca.jrc.it

http://www.woudc.org

http://gaw.kishou.go.jp/wdcgg.htmlhttp://wrdc.mgo.rssi.ru

http://www.empa.ch/gaw/gawsis


WDCA quality assurance for PFR instrumentsPMOD-WORCC (World Optical Depth Radiation Calibration Centre)

Christoph Wehrli

WMO/GAW Report 162 (http://www.wmo.ch/web/arep/gaw/gawreports.html)


Data Overview - AOD I

10 global

17 regional


Data Overview - AOD II

P e r io d s w ith AO D d a ta in W D C A D B (0 8 /2 0 0 5 )

1985 1990 1995 2000 2005

Ny A les und

Mac e Head

Bratts Lake

Z ings t

L indenberg

Pots dam

Hohenpeis s enberg

Jungf raujoc h

Iz ana

Ry or i

Minamitor is h ima

Y onagunijima

Mauna Loa

A lic e Spr ings

AOD data from reporting GAW stations (WDCA data base)


Data Overview - AOD III

AOD data from GAW regional stations (current status)

DeBilt 2 5.18 52.1 [email protected] ContactedFundata 1384 25.3 45.46 [email protected] Address?? --> Hom epage not usefulTamanrasset 1377 5.5 22.78 m_mimouni_dz@yahoo. Delivered 'turbidity (= AOD?)' data for 2003Thule 200 -68.76 76.51 [email protected] ContactedLauder 370 169.68 45.03 p.johnston@niw a.cri.nz ContactedAnmyeon-do (Korea) 45 126.3 36.54 [email protected] Byoung forw arded request to new KGAWO dYuen Ng Fun (China) 86 114.3 22.4 [email protected] Bangkok (Thai) 53 100.6 13.67 [email protected] (Thai) 4 100.6 7.2 [email protected]. ContactedWaliguan 3810 100.9 36.28 [email protected] forw arded m ail to PI for Aerosol (CAWKejimkijik (Can) 127 -65.2 44.4 [email protected]. ContactedEgbert (Can) 253 -79.8 44 [email protected]. "Saturna Island (Can) 178 -123.1 48.7 [email protected]. "La Habana (Cuba) 50 -82.4 23.15 [email protected] .cu ContactedIspra 209 8.6 45.8 julian.groebner@pmodw Contacted (now at PMOD --> CIMEL, in AERON


Data Overview - AOD IV


Data Overview - GRG I

Number of Stations by Parameter and RegionRegion I Region II Region III Region IV Region

V Region VI Antarctica Mobile Total

Station 12 30 8 62 33 117 21 29 312Country 8 10 5 6 7 31 8 3 66O3 4 6 2 17 5 47 4 85CO 6 9 3 16 14 21 8 3 80NO2 1 2 42 45NO 11 11NOx 6 6NOy 3 3SO2 2 46 48Region I: Africa, II: Asia, III: South America, IV: North/Central America, V: South-West Pacific, VI:Europe


Data Overview - GRG II

CO


Data Overview - GRG III

O3-surf


Data Overview - GRG IV

NO

NO2


Aerosol Model Evaluation Prelim. comparison of aerosol model (Morcrette) and GAW observations

Period: Jan - June 2003

Stations: 13 GAW global stations

Parameter: AOD

Model: Sea salt, desert dust

Observations: Total AOD

Filtering station AOD according

to Angstrom Exponent does not

reduce large differences


Episodes ISahara dust at Izana GAW station on 13 Feb 2003

Searching for events in

central Europe...

NOAA-HYSPLIT


Episodes IICO - MOPITTForestfire plume at Ryori GAW station on 23 May 2003

Searching for events with

signatures in AOD, CO, NOx

NOAA-HYSPLIT


Sahara Dust in central Europe in 2003

Sahara Dust Events at Hohenpeissenberg2003

02468

101214161820

Jan 03

Feb 03Mrz

03Apr 0

3Mai 0

3Ju

n 03Ju

l 03

Aug 03

Sep 03

Okt 03

Nov 03

Dez 03

Saha

ra D

ust I

ndex

23/28 January (14)

24/27 February (12)

10/11 March (12)

20-27 March (16)

8 April (12)

5-7 May (14)

15 July (14)

22 July (14)

6-16 August (20)

3 September (12)

5,8 November (14)

21 November (14)

red: Sahara origin confirmed by b-traj


CO Long-range transport episodes

1-12 Jan Pollution over China

15-20 Jan Bushfires in SE-Australia

27 Jan–3 Feb Fires in N-Africa

27 Jan–2 Feb Pollution over China

20–25 Feb Fires in SE-Asia

13 Feb–4 Mar Fires in northern S-America, SE-Asia, W-Africa

18–22 Mar Fires in central America

3–13 Apr Fires in SE-Asia

…


Plans for Project Months 13 - 30

• continue (spectral) AOD validation based on GAW global and regional database (target year 2003), identify / select specific events suitable for model evaluation

• extend validation of reanalysis runs from year 2003 to longer period (e.g., 1996-2005) incl. validation of modelled aerosol radiative effects on surface irradiance

• continue to complete GAW aerosol optical properties database (station contacts) and begin with transition to real-time data flow (DWD as GAW/GEMS interface)

• establish / improve quality level characterization of station AOD data incl. station characteristics

• collaborate with RMIB on AOD validation

• merge task 4.2 validation results to support overall validation by NUIG

• collaborate with modellers to identify model deficits and improve model(s)


Plans for Project Months 13 - 30

• Evaluate GRG model runs with GAW global and regional database (target year 2003)

• identify / select specific events suitable for model evaluation

• extend validation of reanalysis runs from year 2003 to longer period (e.g., 1996-2005)

• continue to complete GAW trace gas database (station contacts) and begin with transition to real-time data flow (DWD as GAW/GEMS interface)

• establish / improve quality level characterization of station trace gas data incl. station characteristics

• collaborate with modellers to identify model deficits and improve model(s)


Open Questions & Needs

• Redundant data in different data bases → co-ordination

• “Real time“ (tbd.) data flow

• Data format and delivery

– reanalysis data

– real time data in operational phase

• Regular meeting/telcons between observers and evaluators• Evaluate on basis of existing measurement data


Initial Parameters for Validation:

- Reactive Gases: ground-based CO, O3, NOx; O3 profiles

- Aerosol: Optical depth (AOD)

3 STEPS

• EVALUATION OF STATISTICAL DIFFERENCES (model vs. measurements)

• IDENTIFICATION OF MODEL DEFICITS (critical assessment of observational data accuracy - e.g. station environment)

• PROPOSAL FOR MODEL IMPROVEMENT (joint effort with modellers)


Meteorological Observatory HohenpeissenbergR/R0 = global radiation normalized to Rayleigh atmosphere

AOD = aerosol optical depth (550 nm), scale inverted

0,6

0,7

0,8

0,9

1

1 2 3 4 5 6 7 8 9 10 11 12

Monat

1-AOD 1999-2002G/G0 1999-2002G/G0 1992 PinatuboG/G0 1982-1983 El Chichon

At blue sky conditions in summer the atmospheric aerosol reflects about 10% more of the global radiative input as compared to winter.


Seven month running average of AOD at 0.55 µm for Lindenberg and Hohenpeissenberg (Germany)

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

AO

D

(Source: M. Weller, DWD Lindenberg)


0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1993 1994 1995 1996 1996 1997 1998 1999 2000 2001 2002 2003

Year


Mean Annual Frequency of Saharan Dust EventsHohenpeissenberg (1997-2004)


1.11.1998

[NASA]

0

2

4

6

8

10

12

14

16

1 2 3 4 5 6 7 8 9 10 11 12Monat

Mitt

lere

Anz

ahl T

age

mit

Sah

aras

taub 1996 - 2003

markante Fälle

Global Atmosphere Watch

0

10

20

30

40

50

60

70

80

90

100

Sta

ubm

asse

µg

/ m 3

05.02.04 06.02.04

DWD-MOHp2 02/2004

GEMS Assembly, Reading, 6-10 Feb 06 (06-02-23) DWD-MOHp2 02/2004

01.1

0.01

02.1

0.01

03.1

0.01

04.1

0.01

05.1

0.01

06.1

0.01

07.1

0.01

08.1

0.01

09.1

0.01

10.1

0.01

11.1

0.01

12.1

0.01

13.1

0.01

14.1

0.01

15.1

0.01

16.1

0.01

17.1

0.01

18.1

0.01

19.1

0.01

20.1

0.01

21.1

0.01

22.1

0.01

23.1

0.01

24.1

0.01

25.1

0.01

26.1

0.01

27.1

0.01

28.1

0.01

29.1

0.01

30.1

0.01

31.1

0.01

0.110

0.135

0.175

0.225

0.300

0.400

0.525

0.675

0.875

1.250

1.750

2.500

3.750

5.250

6.750

Datum

Aer

osol

durc

hmes

ser

µm

9-108-97-86-75-64-53-42-31-20-1

µm3 /cm3

Saharastaub

Global Atmosphere Watch

Größenverteilung der Aerosolpartikeln am MOHp im Oktober 2000

Documents

Report on DWD activities and plans - ECMWF...GEMS Assembly, Reading, 6-10 Feb 06 (06-02-23)Report on DWD activities and plans Harald Berresheim, Harald Flentje German Weather Service,