Other Distribution of MODIS Data MODIS Land Collection
Other Distribution of MODIS Data MODIS Land Collection 5 Workshop Jan. 17, 2007 Robert Wolfe NASA GSFC Code 614. 5 Jan. 17, 2007 - Wolfe
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 online and available via FTP • Get data from other sources (LAADS, Science team sites, MODIS Rapid Response, direct broadcast, etc. ) Jan. 17, 2007 - Wolfe DAAC Unique Ordering Interfaces 3
Other Distribution • • LAADS (L 1 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, 2007 - Wolfe 4
MODLAND Website http: //modis-land. gsfc. nasa. gov/ Jan. 17, 2007 - Wolfe 5
Quick LAADS Web Tour http: //ladsweb. nascom. nasa. gov/ Jan. 17, 2007 - Wolfe 6
Browsing the Image Archive Jan. 17, 2007 - Wolfe 7
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Search and Order Jan. 17, 2007 - Wolfe 10
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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, 2007 - Wolfe 13
Ordering and Acquiring Data Availability: • L 1 & Atmosphere products immediately available by ftp • Search and order will stage data immediately Exceptions: • Only last 30 days of L 1 B data online (request by POD) • Post-processing is needed to subset by parameter (SDS) or geography Jan. 17, 2007 - Wolfe 14
LAADS FTP Access • Directory structure: all. Data/<collection>/<product_name>/ <year>/<day_of_year>/<file_name> • Example: ftp: //ladsweb. nascom. nasa. gov/ all. Data/5/MOD 35_L 2/2007/008/ MOD 35_L 2. A 2007008. 0710. 005. 2007009173622. hdf Collection 5; Cloud mask; Jan. 8, 2007; Granule 07: 10 ftp: //ladsweb. nascom. nasa. gov/ Jan. 17, 2007 - Wolfe 15
UMD Fire Mapper • Active fires • Email alerts • Subsets Jan. 17, 2007 - Wolfe http: //maps. geog. umd. edu/ 16
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 L 1 data at the LAADS Jan. 17, 2007 - Wolfe http: //ladsweb. nascom. nasa. gov/ 17
UMD Global Land Cover Facility (GLCF) MODIS VCC and VCF Jan. 17, 2007 - Wolfe Goodes and Geo Projs http: //glcf. umiacs. umd. edu/data/modis 18
Boston University BRDF/Albedo Land Cover and Dynamics CMG products in Binary Format Jan. 17, 2007 - Wolfe http: //www-modis. bu. edu/ 19
U. Montana – NPP Improved NPP product • ftp access • tiles and geotiff mosaics Jan. 17, 2007 - Wolfe http: //www. ntsg. umt. edu/modis/ 20
http: //modis-land. gsfc. nasa. gov/ Jan. 17, 2007 - Wolfe Questions? 21
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