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Jörg Trentmann on behalf of Frank Kaspar, Jens Riede, Rafael Posada Navia -Osorio

Southern and Western African Science Service Centre for Climate Change and Adaptive Land Management (SASSCAL-WASCAL) activities + Status of GPCC. Jörg Trentmann on behalf of Frank Kaspar, Jens Riede, Rafael Posada Navia -Osorio SASSCAL / DWD Andreas Becker, Markus Ziese

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Jörg Trentmann on behalf of Frank Kaspar, Jens Riede, Rafael Posada Navia -Osorio

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  1. Southern and Western African Science Service CentreforClimate Change and Adaptive Land Management (SASSCAL-WASCAL) activities+ Status of GPCC Jörg Trentmann on behalf of Frank Kaspar, Jens Riede, Rafael Posada Navia-Osorio SASSCAL / DWD Andreas Becker, Markus Ziese GPCC /DWD

  2. Overview SASSCAL / WASCAL • SASSCAL (Southern African Science Service Center on Climate Change and Adaptive Land Management) • WASCAL (West African Science Service Center on Climate Change andAdapted Land Use) Joint researchprogramson landuseandmanagementoflandunderchangingclimaticconditions; withfinancialsupportofthe German Ministryfor Research WASCAL Partner Countries • Benin • Burkina Faso • Côte d‘Ivoire • Gambia • Ghana • Mali • Niger • Nigeria • Sénégal • Togo SASSCAL Partner Countries • Angola • Botsuana • Namibia • Sambia • South´Africa www.sasscal.org www.wascal.org

  3. Mission„Toconductproblem-orientedresearch in theareaofadaptationtoclimatechangeandsustainablelandmanagementandprovideevidence-basedadvicefor all decision-makersandstakeholderstoimprovethelivelihoodsofpeople in theregionandtocontributetothecreationof an African knowledge-basedsociety“ • Aims • Multidisciplinarycooperation • Capacitybuilding • Support decision-makers • Web www.sasscal.org AGRICULTURE WATER FORESTRY CLIMATE BIODIVERSITY

  4. Thematic Area: Climate • 11 Tasks (out of 85); 3 tasksleadby Germany, 1 by DWD

  5. Thematic Area: Climate • Improved weather observation network • 30 automaticweatherstations • Data available online(http://www.sasscalweathernet.org/)

  6. Contributionof DWD:Historical and ongoing climate data management • Cooperationwithmeteorologicalservices in theregion: Angola, Botswana, Zambia + GobabebDesert Research and Training Center (Namib), Namibia • Main focusisimprovementofclimatedatamanagementconcepts & softwareanddatarescue • Installation, trainingandcontributionstodevelopmentofappropriatesoftware • Integration ofdatafromotherarchivesinto national databases (e.g. from DWD) • Cooperation on datarescue

  7. SASSCAL Climate Workshop7 – 10 April 2014, Windhoek, Namibia Climate Data Management System • It was recommended that the use of CDMSs should be harmonized (Angola, Zambia, Botswana) • The preferred software is CLIMSOFT, but improvements are still necessary. • Data Management Systems still need to be implemented locally. • Workshops or training events are needed for capacity building. INAMET, Angola;4 to 13 August 2014

  8. Data rescue at DWD… Locations of ‚oversea‘ stationsof „Deutsche Seewarte“ in thearchiveof DWD (globally: 1500 in total; digitizationisongoing) Data will betransferedtothecountryoforigin!

  9. Data archives in theregion …and in the SASSCAL region • Rescueofhistoricdataiscriticallyimportanttounderstandandinterpretcurrentclimaticconditions, in particular in thecontextofpossibleclimatechange. • These activitiesshouldbeused a broadercontext, e.g. SASSCALor GPCC 2 1 Historical documents in the SASSCAL Region 3 Pictures 1-3, (1) handwrittensynopreport, (2) dataarchive in the SASSCAL region, (3) temperatureand wind recordsfrom a desertstations.

  10. The Global Precipitation Climatology Centre (GPCC) • GPCC was establishedat DeutscherWetterdienst (DWD) on • invitation by WMO and started operation in Jan. 1989 • scientific task: quantitative assessment of global precipitation as part of the global water cycle based on in-situ raingauge measurements collection of observed (gauges) precipitation data world-wide data processing, quality control, storage Long term mean monthly precipitation climatology data analysis, production of gridded data fields distribution of the gridded data fields gpcc.dwd.de

  11. GPCC datapolicy The data delivered by the national agencies are notfurther distributed by the GPCC to respect the ownership of the data providers. The GPCC creates large scale (global) gridded data using spatial interpolation techniques and provides the gridded data sets (0.5°x0.5°, 1°x1° or 2.5°x2.5° lat/lon) for public access through the World Wide Web (gpcc.dwd.de). The quality of the GPCC gridded data set does critically depend on the availability of surface measurements.

  12. Current GPCC products • First Guess Product • based on SYNOP data, automated QC • available within 3 to 5 days after the end of each month • Monitoring Product • based on CLIMAT and SYNOP data, enhanced QC • available within two months after the analyzed month • Climatology (Version 2011) • based on about 67.200 stations • target reference period 1951 – 2000 • Full Data Reanalysis (Version 6) • uses same stations as Climatology • available from 1901 to 2010 New dataversionsarecurrentlybeingprocessed; will bereleased in 2015

  13. First Guess Product, July 2007 Monitoring Product, July 2007 Climatology, July Full Data Reanalysis (V.6), July 2007 Comparison of GPCC Products

  14. Station Density More than 67200 stations with series > 10 years NumberofavailablestationisinhomgeneousthroughoutAfrica, someregionswith high / lowstationdensity! Number of stations per 0.5º grid cell

  15. Request for data The qualityofthe GPCC datasetsdependscritically on theavailabilityofthesurfacedata! Thanksto all contributorstothe GPCC!

  16. Applications: Climate Monitoring Average Precipitation, March Precipitation, March 2014 SpatialStructureof GPCC PrecipitationAnomalyfor March 2014 compareswith ACMAD analysis; differences in Central Africa ACMAD (Source : NOAA/NCEP)

  17. Applications: Drought Monitoring GPCC-baseddroughtindex US Global Drought Information System: http://www.drought.gov/gdm/

  18. New GPCC Products January 2013 • GPCC drought index • precipitation data from GPCC • analysis from January 2013 until present • updated 10 to 13 days after each month • First Guess Daily Precipitation Product • analysis of daily precipitation total • based on SYNOP reports with automated QC • released together with First Guess Product • analysis from January 2009 until present 10 January 2013

  19. Summary / Conclusions • SASSCAL / WASCAL • Science Service CentreforClimate Change and Adaptive Land Management; Topic ‚Climate‘ is a centralpart • Capacitybuildingandsustainability • DWD contributestothebuild-upofclimatedatamanagementsystemsanddatarescue • GPCC • Generation anddistributionoflong-term griddedprecipitationdatasetsbased on surfacemeasurements • Data qualitycriticallydepends on thenumberofsurfaceobservations • GPCC servesthecommunitybyprovidingaccesstothegriddeddataandvisualisationoptions.

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