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27.-29. October 2009 WMO CCl ET 2.2, Offenbach, Germany Rainer Hollmann Satellite Application Facility on Climate Monitoring (CM-SAF) DWD, Germany Achievements.

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Presentation on theme: "27.-29. October 2009 WMO CCl ET 2.2, Offenbach, Germany Rainer Hollmann Satellite Application Facility on Climate Monitoring (CM-SAF) DWD, Germany Achievements."— Presentation transcript:

1 October 2009 WMO CCl ET 2.2, Offenbach, Germany Rainer Hollmann Satellite Application Facility on Climate Monitoring (CM-SAF) DWD, Germany Achievements from CM-SAF for WMO CCl ET2.2

2 October 2009 WMO CCl ET 2.2, Offenbach, Germany Report about action items open issues Outline

3 October 2009 WMO CCl ET 2.2, Offenbach, Germany (Donlon, Hollmann, Wang) A Web-based ‘Capability Audit’ of satellite and in situ climatologies and related activities will be developed for the ET2.2 web site. The inventory should list data set descriptions, example data set outputs, links to GCOS CDR requirements, known problems and issues, data access points, appropriate data sets developer/maintainer contact points, and a summary of ‘missing’ CDR data sets that are yet to be developed under the GCOS requirement (Target Date: April 2007). Update continuously. Nothing done in particular so far. Space program has already a lot of information available from their webpage. Also GEWEX is hosting a lot of information. Action 2, Tarragona Meeting

4 October 2009 WMO CCl ET 2.2, Offenbach, Germany Hollmann, Brunet They will work with the CCl ET2.2 team to develop a proposal (Target Date: May 2007) to EUMETSAF SAF (Head: L Schuller) for a climate based visiting scientist activity in collaboration with the international climate community (Noting the following EUMETSAT and ET2.2 interests including: the ET2.2 emphasis on oceans and satellites, the need for capability building of satellite expertise and products in developing countries, the need for better international coordination for satellite climate products, the expertise of EUMETSAT and the CM-SAF, the recent purchase (by EUMETSAT) of the entire SSM/I brightness temperature archive, the need for new accurate and consistent products and climate indicators, the expertise within the entire SAF network and their desire to develop integrated products). Discussions with EUMETSAT lead to the conclusion, that this is not feasible. Action 3, Tarragona Meeting

5 October 2009 WMO CCl ET 2.2, Offenbach, Germany Hollmann, Zhang, Bessemoulin To create overview of what satellite data are available and appropriate for climate monitoring and place that overview on ET2.2's web site (Target Date: April 2007). As training and education is important, inputs are requested from every member of ET 2.2 on satellite training activities in their regions and contact points who can provide information. Demonstration projects may be appropriate, and examples will be provided on the web site if possible. Some comments about capacity requirements in terms of data transfer rate will be made as some satellite data sets are small and others are huge. Liaise with Space Programs to avoid duplication of effort. Pierre Bessemoulin to provide contact information about the Space Program. Zuqiang Zhang to contact the Chinese Meteorological Satellite Center of CMA to see what assistance they can provide for training. Focus have been set to training and education. for the first points realized that it is not simple… Action 5, Tarragona Meeting

6 October 2009 WMO CCl ET 2.2, Offenbach, Germany To create overview of what satellite data are available and appropriate for climate monitoring and place that Action 5, Tarragona Meeting (2) Several activities currently running with the aim to investigate the quality of long-term satellite data sets: GEWEX Cloud assessment for GEWEX global cloud datasets GEWEX Radiation assessment for GEWEX global datasets comparison with Re-Analysis data and more… Cloud Assessment co-chairs: C. Stubenrauch, S. Kinne

7 October 2009 WMO CCl ET 2.2, Offenbach, Germany Longterm cloud climatologies: ISCCP ISCCP GEWEX cloud dataset (Rossow et al. 1999) PATMOS-x PATMOS-x AVHRR (NESDIS/ORA; Heidinger et al.) HIRS-NOAA HIRS-NOAA 13h30/1h (Wylie et al. 2005) TOVS Path-B TOVS Path-B 7h30/19h (Stubenrauch et al. 2006) SAGE SAGE limb solar occultation , (Wang et al. 1996, 2001) SOBS SOBS (Surface Observations): (sea), (land) (Hahn & Warren 1999; 2003) EOS cloud climatologies : EOS cloud climatologies (since 2000, 2002) : MODIS-ST MODIS-CE MODIS-ST (Ackerman et al.) MODIS-CE (Minnis et al.) AIRS-LMD AIRS-LMD (Stubenrauch et al. 2008) : + A-Train (since 2006) : CALIPSO L2 data (V2) CALIPSO L2 data (V2) (Winker et al. 2007) active lidar CloudSat (Mace) POLDERMISRATSR2 CloudSat (Mace) POLDER (Riedi) MISR (DiGirolamo) ATSR2 (Poulsen) Courtesy of C. Stubenrauch, LMD, Paris

8 October 2009 WMO CCl ET 2.2, Offenbach, Germany HCA/CA seasonal cycle Seasonal cycles similar: 30% in SH tropics to 5% in SH midlatitudes NHSH 0°-30° 30°-60° 60°-90° SAGE Courtesy of C. Stubenrauch, LMD, Paris

9 October 2009 WMO CCl ET 2.2, Offenbach, Germany HCAHCA small seasonal cycle; exception: SH subtropics stratocumulus regions (20%) SOBS: 18% more LCA and smaller seas. cycle over ocean => LCA seas. cycle from satellite modulated by HCA & MCA seas. cycle LCA/CA seasonal cycle over ocean CALIPSOHIRS-NOAATOVS-BAIRS-LMDISCCPPATMOS-xSOBSMODIS-STMODIS-CEPOLDER LCALCA 30°-60°N 0°-30°N 0°-30°S Courtesy of C. Stubenrauch, LMD, Paris

10 October 2009 WMO CCl ET 2.2, Offenbach, Germany Cloud top temperature of high and low clouds Seasonal cycle of high T cld decreases from polar (15°), midlat (10°) to tropics (5°) low T cld (20°) (20°) (5°) differences : largest for high clouds in tropics, very good agreement for low clouds uncertainties in cloud height determination (esp. thin cirrus), T profilesTOVS-BISCCPPATMOS-xAIRSCALIPSO:all  >0.1 T cld low (K) 60°-90°30°-60° 0°-30° T cld high (K) NH Courtesy of C. Stubenrauch, LMD, Paris

11 October 2009 WMO CCl ET 2.2, Offenbach, Germany Comparison with Re-Analysis: Longwave downwelling radiation (1) ERA ( ): 342 Wm -2 ISCCP ( ): 344 Wm -2 GEWEX ( ): 343 Wm -2 excellent agreement for the multi-year average huge differences in the inter-annual variability and long-term trends Courtesy of J. Trentmann, CM-SAF, DWD

12 October 2009 WMO CCl ET 2.2, Offenbach, Germany ERA-Interim has the highest quality of the available global long- time records for surface downwelling longwave radiation Even for ERA-Interim 10 % of the considered months exceed the GCOS accuracy requirement! Quality of CM-SAF product is between GEWEX-SRB and ISCCP Courtesy of J. Trentmann, CM-SAF, DWD Comparison with Re-Analysis: Longwave downwelling radiation (2)

13 October 2009 WMO CCl ET 2.2, Offenbach, Germany For solar surface downwelling radiation very comparable performance of the ERA-Interim, GEWEX, ISCCP data sets about 1/3 of the monthly mean values exceed the GCOS accuracy requirement (not tolerable!) CM-SAF data set (SEVIRI) compares better with available BSRN surface stations Courtesy of J. Trentmann, CM-SAF, DWD Comparison with Re-Analysis: Shortwave downwelling radiation

14 October 2009 CMSAF-HOAPS vs. ECMWF/JMA Time series of daily biases [global mean total water vapour content] Courtesy of M. Jonas, CM-SAF, DWD

15 October 2009 WMO CCl ET 2.2, Offenbach, Germany Capacity building for satellite based climate monitoring (1) Workshops to train the use of satellite data for climate monitoring EUMETSAT-CMSAF Climate Workshops in 2006, 2007, 2008 (beginners) target audiences: climate departments esp. Eastern European Countries ~ 40 European participants in total attended the workshops African users (~5) with introductions, practical, data formatting tools GCOS-EUMETSAT-DWD Climate Workshop for advanced users in 2009 in Langen, Germany target audiences: already used satellite data for climate applications 12 participants focus on time-series with practical Upcoming Training workshops: 30. Aug - 3. Sep in Rostock back-to-back with CM-SAF user workshop (6-8. Sep. 2010)

16 October 2009 WMO CCl ET 2.2, Offenbach, Germany Capacity building for satellite based climate monitoring (2)

17 October 2009 WMO CCl ET 2.2, Offenbach, Germany WMO CLIPS Showcase with Armenia: (i) compare Satellite data with in-situ radiation measurements (ii) derive spatial correction factor to be applied to satellite data to homogenize sat and surface data (iii) Use spatial information of satellite data to come to an improved and full scale radiation product Capacity building for satellite based climate monitoring (2)

18 October 2009 WMO CCl ET 2.2, Offenbach, Germany WMO CLIPS Showcase with Armenia: Report will be available soon Capacity building for satellite based climate monitoring (3)

19 October 2009 WMO CCl ET 2.2, Offenbach, Germany Development of a CAL Module on Satellite Data in Climate Monitoring online since December 2008 accessible via the EUMeTrain webpage Capacity building for satellite based climate monitoring (4)

20 October 2009 WMO CCl ET 2.2, Offenbach, Germany Report about action items open issues Outline

21 October 2009 WMO CCl ET 2.2, Offenbach, Germany Other Open Issues Agreed to write an article for the WMO Bulletin about satellite based climate monitoring. contributed to CGMS meeting with some comments reviewed the GCOS satellite related documents like the implementation plan etc. Need for a more active participation of the full team on the issue of satellite based climate monitoring


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