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 transcript:

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

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) Dr. Leptoukh Online Giovanni Workshop9/25/2012

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

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

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

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

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

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

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

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

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

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

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

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

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

Giovanni Land Portals:  Application and Education portals Project Portals: GES DISC MAIRS: GES DISC NEESPI: Dr. Leptoukh Online Giovanni Workshop9/25/2012