increasing access to modis data through web services and visualization tools
DESCRIPTION
Remote sensing –Beyond images Mexico 14-15 December 2013 The workshop was organized by CIMMYT Global Conservation Agriculture Program (GCAP) and funded by the Bill & Melinda Gates Foundation (BMGF), the Mexican Secretariat of Agriculture, Livestock, Rural Development, Fisheries and Food (SAGARPA), the International Maize and Wheat Improvement Center (CIMMYT), CGIAR Research Program on Maize, the Cereal System Initiative for South Asia (CSISA) and the Sustainable Modernization of the Traditional Agriculture (MasAgro)TRANSCRIPT
Increasing Access to MODIS datathrough Web services and visualization tools
Suresh K.S. VannanORNLOak Ridge, TN, USA
Remote Sensing - Beyond Images Dec 15th 2013
Background
ORNL DAAC: NASA’s archive for biogeochemical dynamics and terrestrial ecology data
http://daac.ornl.gov/MODIS
• To characterize field sites• Provide quick access to MODIS data
MODIS Subsetting and Visualization Tool
Challenges:
Accessibility
Data Format
Processing Time
MODIS Land Product Subsetting Toolso In a scale and format (text,
GeoTIFF)o useful for field researchers
Methods to obtain subsets:
Tool 1 : MODIS Global tool subsets:– Subsets and visualization
Tool 2: Web Service:– Programmatically obtain MODIS
subsets
MODIS Land Products at ORNL DAACSurface Reflectance
Surface Temperature Land Cover
Vegetation Phenology NDVI / EVI
LAI / fPARNet Photosynthesis
Annual NPPAlbedo
EvapotranspirationReflectance – BRDF Adjusted
MODIS Global tool – http://daac.ornl.gov/modisglobal
Ordering Interface
MODIS Global tool - features
Ordering Interface
MODIS Global tool - features
Custom Interface for data order
Average Time to process: About 3 minutes
MODIS Global tool - features
Custom Interface for data order
MODIS Global tool - features
Custom Interface for data order
MODIS Global tool - Summary
Ordering Interface
Custom Interface for data order
Multiple Visualizations with link to phenology and land cover data
Get MODIS Subsets through machine to machine interaction
Retrieve Subsets using:
• Command line ( Perl)• Workflows (Kepler)• JAVA• Python• R• Matlab
MODIS Web Service – http://daac.ornl.gov/modiswebservice
getsubset (40,-110,"MOD13Q1”,"250m_16_days_NDVI”,"A2000065”,"A20000081", 10,10)
MOD13Q1.A2000065.h09v04.005.2008238050507.250m_16_days_NDVI, 1177, 1164, 1116, 1198, 1256, 1226, 1177, 1154, 1267, 1348, 1277, 1345, 1411, 1341, 1278, 1217, 1232, 1244, 1262
MODIS Web Service – subsets command
Applications – Field work
Example of field site applications
Soilscape