Other Distribution of MODIS Data MODIS Land Collection 5 Workshop Jan. 17, 2007 Robert Wolfe NASA GSFC Code 614.5
Jan. 17, Wolfe 3 Getting MODIS Data Order from DAAC through EOS Data Gateway –response is a few hours –services (e.g. subsetting) available for some products Get data from DAAC data pools –most recently produced data are on- line and available via FTP Get data from other sources (LAADS, Science team sites, MODIS Rapid Response, direct broadcast, etc.) DAAC Unique Ordering Interfaces
Jan. 17, Wolfe 4 Other Distribution LAADS (L1 and Cloud Mask) MODIS Land Rapid Response UMD Fire Mapper GLCF (VCC, VCF) Boston U. (Albedo & Land Cover CMGs) Montana (NPP improved) etc...
Jan. 17, Wolfe 5 MODLAND Website
Jan. 17, Wolfe 6 Quick LAADS Web Tour
Jan. 17, Wolfe 7 Browsing the Image Archive
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10 Search and Order
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Jan. 17, Wolfe 13 Geographic and Parameter Subsetting Allows for custom design of delivered products, reducing bandwidth and researcher storage requirements Parameter subsetting particularly valuable for “fat” Level-3 Atmosphere products Involves some delay for file preparation, but runs rapidly in a disk-to-disk environment Subsetting engine is prototype for future “custom” products
Jan. 17, Wolfe 14 Ordering and Acquiring Data Availability: L1 & Atmosphere products immediately available by ftp Search and order will stage data immediately Exceptions: Only last 30 days of L1B data online (request by POD) Post-processing is needed to subset by parameter (SDS) or geography
Jan. 17, Wolfe 15 LAADS FTP Access Directory structure: allData/ / / / / Example: ftp://ladsweb.nascom.nasa.gov/ allData/5/MOD35_L2/2007/008/ MOD35_L2.A hdf Collection 5; Cloud mask; Jan. 8, 2007; Granule 07:10 ftp://ladsweb.nascom.nasa.gov/
Jan. 17, Wolfe 16 UMD Fire Mapper Active fires alerts Subsets
Jan. 17, Wolfe 17 MODIS Land Rapid Response Browse-and-click interface Calendar-based layout Multiple spatial resolutions, multiple band combinations, multiple products Gallery images keyword-searchable and georeferenced (“world file” available for GIS users) Link to L1 data at the LAADS
Jan. 17, Wolfe 18 UMD Global Land Cover Facility (GLCF) MODIS VCC and VCF Goodes and Geo Projs
Jan. 17, Wolfe 19 Boston University BRDF/Albedo Land Cover and Dynamics CMG products in Binary Format
Jan. 17, Wolfe 20 U. Montana – NPP Improved NPP product ftp access tiles and geotiff mosaics
Jan. 17, Wolfe 21 Questions?