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PI: R. Adler (NASA/GSFC) Co-I’s: G. Huffman, G. Gu, S.Curtis

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Presentation on theme: "PI: R. Adler (NASA/GSFC) Co-I’s: G. Huffman, G. Gu, S.Curtis"— Presentation transcript:

1 PI: R. Adler (NASA/GSFC) Co-I’s: G. Huffman, G. Gu, S.Curtis
Project Title:Global Precipitation Analysis for Climate and Weather Studies PI: R. Adler (NASA/GSFC) Co-I’s: G. Huffman, G. Gu, S.Curtis Science issue: Determine how the characteristics of global precipitation are changing in terms of means, variations and extremes. Approach:Analyze the GPCP record along with other shorter, high quality data sets such as TRMM. Satellite-based data: GPCP, TRMM radar and passive estimates, SSM/I, AMSR, TRMM Multi-satellite Precipitation Analysis (TMPA) 3-hr data Other data and models:Other water cycle/ reanalysis data sets Study Period:1979-present for long-term studies; 1998-present (TRMM period) for focused comparisons and extremes Project status: Year 1 & 2 major finding - Gu et. al 2007 define possible increase in tropical rainfall, impact of volcanoes. Year 3 (now) –paper submitted on surface temperature-rain relations on inter-annual to inter-decadal scale, determination of climatological rain and bias error for water cycle closure, variations in extremes Year 4&5 - understand temp./rain relations, close water cycle and examine variations thereof, critically examine rain trends Gu, G., R. Adler, G. Huffman, and S. Curtis , 2007: Tropical Rainfall Variability on Interannual-to-Interdecadal/Longer-Time Scales Derived from the GPCP Monthly Product, J. Climate, 20, Adler, R.F., G. Gu, J.-J. Wang, G.J. Huffman, S. Curtis and D. Bolvin, 2008: Relationships between Global Precipitation and surface Temperature on Inter-annual and Longer Time Scales ( ). J. Geophys. Res., submitted NEWS linkages: (pull, push, collaborate, external) Wentz, Roads, others-use data sets/results Schlosser - Precip. info. for NEWS “close the water cycle” project Bosilovich- Evaluate re-analysis with GPCP and other data Rodell/Peters-Lidard –TMPA data for evaluation Contributes to the GEWEX through GPCP production and analysis of water cycle Evaluation of global precipitation products as part of NEWS Exercise #1 on closing the global hydrologic cycle--Best estimate and associated errors being derived for 3 years of data

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