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)

1. Increasing Access to MODIS data
through Web services and
visualization tools
Suresh K.S. Vannan
ORNL
Oak Ridge, TN, USA
Remote Sensing - Beyond Images Dec 15th 2013

2. Background
ORNL DAAC: NASA’s archive for
biogeochemical dynamics and
terrestrial ecology data
http://daac.ornl.gov/MODIS

3. MODIS Subsetting and Visualization Tool
Challenges:
 Accessibility
 Data Format
 Processing Time
•
•
To characterize field sites
Provide quick access to MODIS data

4. MODIS Land Product Subsetting Tools MODIS Land Products at ORNL DAAC
o In a scale and format (text,
Surface Reflectance
GeoTIFF)
Surface Temperature
o useful for field researchers
Land Cover
Methods to obtain subsets:
Tool 1 : MODIS Global tool subsets:
– Subsets and visualization
Tool 2: Web Service:
– Programmatically obtain MODIS
subsets
Vegetation Phenology
NDVI / EVI
LAI / fPAR
Net Photosynthesis
Annual NPP
Albedo
Evapotranspiration
Reflectance – BRDF Adjusted

5. MODIS Global tool – http://daac.ornl.gov/modisglobal
Ordering Interface

6. MODIS Global tool - features
Ordering Interface

7. MODIS Global tool - features
Custom Interface for data
order
Average Time to process:
About 3 minutes

8. MODIS Global tool - features
Custom Interface
for data order

9. MODIS Global tool - features
Custom Interface
for data order

10. MODIS Global tool - Summary
Ordering Interface
Multiple Visualizations with
link to phenology and land
cover data
Custom Interface for
data order

11. MODIS Web Service – http://daac.ornl.gov/modiswebservice
Get MODIS Subsets through machine to
machine interaction
Retrieve Subsets using:
• Command line ( Perl)
• Workflows (Kepler)
• JAVA
• Python
•R
• Matlab

12. MODIS Web Service – subsets command
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

13. Applications – Field work

14. Example of field site applications