Deutscher Wetterdienst Climate Monitoring CCl Expert Team Meeting – 27.10.2009 Marine Climate Monitoring relevant to WMO / CCl Christiana Lefebvre DWD

CCl Expert Team Meeting – 27.10.2009

Deutscher WetterdienstClimate Monitoring

Marine Climate Monitoring relevant to WMO / CCl

Christiana Lefebvre

DWD in Hamburg

Seewetteramt

Section:

Marine Climate Monitoring



International Marine Meteorological Involvement

Content:

International Exchange of Marine Meteorological Data

(Marine Climatological Summary Scheme)

Modernization of MCSS

Historical Data from Logbooks




JCOMM - Joint WMO/IOC Technical Commission for Oceanography and Marine Meteorology



EUCOS - EUMETNET Composit Observing System

EUCOS aims to establish and operate a truly European observing network leading to better-quality numerical and general forecasts, initially on a European scale.

Marine Component of the EUCOS Operational Programme:

E-ASAPE-SURFMAR

DB-TAG


VOS

DB-TAGVOS-TAG

Data Buoy Deutscher Wetterdienst is responsible member of the EUCOS Programme Phase 2007-2011



International Exchange of Marine Meteorological Data

WWW: World Weather Watch MCSS: Marine Climatological Summaries Scheme



Stock in Rotterdam

HamburgRostock

Bremerhaven

Stock in

Neuseeland

Port Meteorological Office



The Fleet of Voluntary Observing Ships (VOS)

Anzahl deutscher VOS im

internationalen Vergleich

0

100

200

300

400

500

600

700

800

900

US DE GB JP BR RU CA NL IN YU MY SA AU SE BE PL FR NZ PH SG CN DK HR HK LV BG ZA ID LT KR TZ PK IE PT KE NO FI IT KP GR IS LK AR CU AZ BD CL TH IL EC ES

Number of VOS



Spatial Distribution of VOS Observations



The Tasks of the GCCs

GCCs ensure, that WMO agreed Minimum QC Standards are applied and feed back results to CM

All data received by GCCs is distributed to 8 RMs quarterly

VOSClim ship data is submitted to DAC

At the year end a ‘GCC Annual Report’ is published highlighting GCCs work and data received

GCCs provide advice/support to CMs



Figure 1: Contributed and Distributed Observations 1994 - 2008

874024

1380681

1545134

976751

1319398

804757

1414343

808990

1198404

10785181111484

932492 958059

1101880

878886

13

15

1817 17

14

17

1415

17 1716 16

1716

0

200000

400000

600000

800000

1000000

1200000

1400000

1600000

1800000

2000000

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008

Nu

mb

er

of

ob

serv

ati

on

s

0

5

10

15

20

25

30

35

40

45

50

Nu

mb

er

of

Co

ntr

ibu

tors

Total Number of contributed observations Number of distributed observations No of Contributors

Results from GCC‘s Annual Report 2008



Figure 8a: Elements reported "blank" 2006 - 2008

14% 15%

18% 20%

49%

53% 54% 54% 55%

62%

73%

100%

0%

20%

40%

60%

80%

100%

Tb Tw a ppp VV Hw ww clouds Pw h Dw1=Dw2 RRR

All Obs 06 All Obs 07 All Obs 08

Results from GCC‘s Annual Report 2008



Archiving of Marine Meteorological Data at DWD

DM – VOS Data

Real-time VOS Data via GTS

Data from Platforms or moored Buoy Data via GTS

Data from drifting Buoy via GTS





0

500.000

1.000.000

1.500.000

2.000.000

2.500.000

3.000.000

3.500.000

18

50

18

55

18

60

18

64

18

68

18

72

18

76

18

80

18

84

18

88

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92

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96

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00

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19

60

19

64

19

68

19

72

19

76

19

80

19

84

19

88

19

92

19

96

20

00

20

04

20

08

Year of observation

Nu

mb

er

of

ob

se

rva

tio

ns

Realtime

NoneRealtime

VOS Data Archive at DWD



High Quality Control of VOS Data at DWD

On-land Position Check

Time-sequence Check

Comparisons of different Parameters with a Climatology

Manually correction of data errors



Archive of statistics for all between 77.0 N bis 60.0 S for the period 1951 – 2000 and for decades

MARDAB - Marine Data Base

Means, extremes, frequency distribution (1- , 3-dimensional), variance of different elements as

wind, waves, mean sea level pressure, temperatures (TL, TW, TD),visibility, cloud cover, rel. humidity, evaporation

Basis: - About 51 millions of observations of the VOS fleet- quality controlled data by using HQC (flags)- elimination of the port problem due to use of automatic stations

About 1200 Sea Areas of 5° x 5°, partly 2,5° x 2,5° or 10° x 10 °



Monitoring Products

Monthly Air Temperatures and Anomalies across the North Atlantic Ocean

http://www.dwd.de/



Marine Climatological Summaries

• decadal periods

• chart form (Mercator projection) for the area of responsiblity

unit areas of 5° x 5° squares

• tabular form

• order of presented data

• monthly and annual charts

• tabular form for fixed stations

and representative areas

• no financial support by WMO

Regulations for the presentation of the MCS:

N o l o n g e r

‚S t a t e

o f t h e A

r t‘



Modernization of MCSS

ETMC established 2 Task Teams in 2007:

Task Team on Marine and Oceanographic Climatological Summaries (TT-MOCS)

Task Team on Delayed Mode VOS Data (TT-DMVOS)



Future Data Flow

Main Topics of the TT-DMVOS / TTMOCS Planning Meeting 2008

Higher Quality Standards (HQCS)

Revisions of IMMT and Minimum Quality Control Standards (MQCS)



Draft for the Future Marine Data Flow



Historical Data from Logbooks

DWD holds an Archive of

7796 met. Journals from Sailing Ships and about23768 met. Journals from Steamers



1820 1830 1840 1850 1860 1870 1880 1890 1900 1910 1920 1930 1940

1820 1830 1840 1850 1860 1870 1880 1890 1900 1910 1920 1930 1940

Navigation Logbooks

Maury

Met. Journals, Sailing Ships

Met. Journals, Steamer

Met. Journals,North- and Balticsea

Trawler

Kaiserliche Marine

Archive of Historical Data from Logbooks since 1830



Digitization of the Historical Data: Project HISTOR

HISTOR aims in:

Providing quality controlled historical Data

Providing Metadata

Preserving the content of the logbooks by imaging



Digiti-zation

Instr. Corr.

Date, Time, Pos

Met. Check

Archive No. of books No. of Obs

completed ca. 16.900 10.194.000

POS-Files 2.754 827.000

ERF-Files 157 52.000

MarkObs 4.735 2.721.000

Σ done ca. 24.546 13.794.000

Σ total - Σ done ca. 12.563 ca. 7.600.000

State of the historical Archive

Σ ca. 21.4 million



Many thanks for your attention

Documents

Deutscher Wetterdienst Climate Monitoring CCl Expert Team Meeting – 27.10.2009 Marine Climate Monitoring relevant to WMO / CCl Christiana Lefebvre DWD