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ORNL DAAC MODIS Web ServiceMODIS subsets through Simple Object Access Protocol (SOAP)

Suresh Kumar santhanavans@ornl.gov

ORNL DAAC User Working Group Meeting 2009May 19th 2009

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MODIS Web ServiceGet MODIS Subsets through machine to machine interaction

SOAP (Simple Object Access Protocol) based

Retrieve Subsets using:

• Command line ( Perl)• Workflows (Kepler)• JAVA desktop software

User Comment:

“Anyway - for what it's worth I think the [MODIS] web server [service] is a really great idea and of potentially large value to the scientific community - if you need a letter of support to help keep it running I would be happy to provide one.”

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Demo

MODIS Web Service – JAVA client

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Example Usage: What is the MODIS land cover value at 32.707072 N, -94.120474 W

Perl Client

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Kepler- Scientific Workflow

Check in Google Maps for aerial photo of this location

Step A:

Provide inputs such as • Product • Band• Latitude, Longitude• Size of the subset

A

B

C

Step B:

Kepler uses the MODIS Web Service to find all dates that have MCD12Q1 (Land Cover) data for location 32.707072 N, -94.120474 W

Step C:

Kepler uses the MODIS Web Service to get the subsets for each available MODIS date.

The subset is displayed