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Exploring Land Processes and Climate Variations through Giovanni Suhung Shen and James Acker Dr. Leptoukh Online Giovanni Workshop9/25/2012.

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Presentation on theme: "Exploring Land Processes and Climate Variations through Giovanni Suhung Shen and James Acker Dr. Leptoukh Online Giovanni Workshop9/25/2012."— Presentation transcript:

1 Exploring Land Processes and Climate Variations through Giovanni Suhung Shen and James Acker Dr. Leptoukh Online Giovanni Workshop9/25/2012

2 Remotely Sensed Land Products in Giovanni  Land Cover Types/Dynamics (MODIS)  Vegetation Index (MODIS)  Land Surface Temperatures (MODIS)  Soil Moisture (AMSR-E)  Snow/Ice Occurrence Frequency (NESDIS/IMS)  Active Fires (MODIS)  Surface Albedo (MODIS)  Nighttime Lights (DMSP-OLS) http://disc.sci.gsfc.nasa.gov/mairs/data-holdings Dr. Leptoukh Online Giovanni Workshop9/25/2012

3 Spatial Resolutions of Products  Low resolution: 1x1 deg (LST, VI, Fire, Soil Moisture, Snow/Ice), global coverage, spatially aggregated from original global higher resolution data (mostly 0.05x0.05 deg)  Medium resolution: 0.05x0.05 deg (LST, VI, Albedo), global coverage, standard products created by science team  Higher resolution: 1x1 km (LST, Fire) or 0.5x0.5 km (Land Cover Types) over Asian region only (0 o -60 o N, 60 o E-150 o E), processed from original tiled data files and projected to cylindrical equidistance map projection Dr. Leptoukh Online Giovanni Workshop9/25/2012

4 Preprocessing Higher Resolution Data Dr. Leptoukh Online Giovanni Workshop9/25/2012

5 MODIS Land Cover Types at 5.6km Resolution Dr. Leptoukh Online Giovanni Workshop9/25/2012

6 MODIS Land Cover Types at 5.6km Resolution Dr. Leptoukh Online Giovanni Workshop9/25/2012

7 MODIS Land Cover Types at 500m Resolution 500m Resolution Dr. Leptoukh Online Giovanni Workshop9/25/2012

8 Anomalous Surface Temperatures and Greenness Over Northern American in Early Spring 2012 MODIS-Terra land surface temperature anomaly, March 2012, 0.05deg resolution MODIS-Terra NDVI anomaly, March 2012, 0.05 deg resolution Dr. Leptoukh Online Giovanni Workshop9/25/2012

9 Drought and Weaker Vegetation Index over American Southwest in Summer 2011 MODIS-Terra NDVI anomaly, Jun-Aug 2011, 0.05deg resolution TRMM Precipitation rate anomaly, Jun-Aug 2011, 0.25 deg resolution Texas Dr. Leptoukh Online Giovanni Workshop9/25/2012

10 Time Series of Monthly Anomaly TRMM Precipitation and MODIS-Terra NDVI Dr. Leptoukh Online Giovanni Workshop9/25/2012

11 Time Series of Monthly Anomaly TRMM Precipitation and MODIS-Terra NDVI Dr. Leptoukh Online Giovanni Workshop9/25/2012

12 Exploring Urban Heat Island Effect 2001 Shanghai o 2010 Shanghai o JJA 2001JJA 2010 Dr. Leptoukh Online Giovanni Workshop9/25/2012

13 Exploring Urban Heat Island Effect – Continue MODIS LST (C o ) 2001 & 2011 Tai Lake Shanghai SuZhou Longitude Summer LST Rural Area YiXing Dr. Leptoukh Online Giovanni Workshop9/25/2012

14 Averaged Active Fire Pixel Counts (2002-2010) Dr. Leptoukh Online Giovanni Workshop9/25/2012

15 Interannual Variations of Fires over South Asia Active Fire Pixel count (100 o E-105 o E, 18 o N-22 o N) 2004.032006.03 2010.04 Locations of Active Fire Mask at 1km Resolution Dr. Leptoukh Online Giovanni Workshop9/25/2012

16 Giovanni Land Portals: http://disc.gsfc.nasa.gov/giovanni  Application and Education portals Project Portals: GES DISC MAIRS: http://disc.gsfc.nasa.gov/mairshttp://disc.gsfc.nasa.gov/mairs GES DISC NEESPI: http://disc.gsfc.nasa.gov/neespihttp://disc.gsfc.nasa.gov/neespi Dr. Leptoukh Online Giovanni Workshop9/25/2012

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