MODIS Web Services Synchronous Post-processing Approach

Web Services are available for MODIS (Moderate Resolution Imaging Spectro-radiometer) Level 1 and Atmospheric data archived at NASA GSFC in the MODAPS (MODIS Adaptive Processing System). Since early 2010, the Level 1 and Atmospheric Archive and Distribution System (LAADS) Web Services Interface has provided the same capabilities for accessing MODIS data as the standard user-interactive GUI. This Web Service interface allows users to automate MODIS data search and ordering, as well as, post-processing activities that include subsetting, reformatting and reprojection. In addition, Web Clients customized to specific user needs can now include MODIS data in their list of products. Open Web Service standards like OpenSearch have been or are being implemented. One of these new capabilities is support of the OGC compliant web services WMS and WCS. These new services will allow for immediate delivery of products to meet users’ needs. As part of the implementation of these new services, the current asynchronous “batch” post-processing architecture is being upgraded to include a synchronous capability that returns post-processed products quickly. We will present the implementation details of the synchronous approach that will provide this new capability.