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V005 MYD11 Changes

V005 MYD11_L2 Science Data Sets (specifications for data layers)

V005 MYD11_L2 Quality Information

Data Set Characteristics: Area: ~2330 x 2000 km Dimensions: 2030 x 1354 rows/columns File Size: ~3 MB compressed Resolution: 1-kilometer Projection: None (swath data) LST Data Type: 16-bit unsigned integer Emissivity Data Type: 8-bit unsigned integer Data Format<: HDF-EOS Science Data Sets (SDS HDF Layers): 9 This false-color image shows the LSTs at clear-sky pixels in the MYD11_L2 product retrieved from MODIS data of 9th May 2007 over Spain and Morocco.  This level-2 swath image appears inverted because Aqua’s ascending orbit is not addressed until the data are projected into higher level Sinusoidal grid products.

Product Description
The level-2 MODIS global Land Surface Temperature (LST) and Emissivity daily data are retrieved as 1-kilometer pixels by the generalized split-window LST algorithm.  Optimum use of the LST algorithm is gained by separating ranges of atmospheric column water vapor and lower boundary air surface temperature into tractable sub-ranges. Surface emissivities in bands 31 and 32 are estimated from land cover types.

MYD11_L2 is swath data obtained in 5-minute sensor collection periods and is comprised of LST, quality assessment, error estimation, observation time, view angle, emissivities in bands 31 and 32, and the geographic coordinates of every five scan lines and samples.  MYD11_L2 is provided as a daily unprojected level-2 product.

Version-5 MODIS/Aqua Land Surface Temperature/Emissivity products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts.  Although there may be later improved versions, these data are ready for use in scientific publications.

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Retrieve the MYD11_L2.5 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e4eil01u.ecs.nasa.gov:22000/WebAccess/drill?attrib=esdt&esdt=MYD11_L2.5&group=MOLA
Via FTP Directory: ftp://e4ftl01u.ecs.nasa.gov/MOLA/MYD11_L2.005/

Order Data through the EOS Data Gateway
(http://edcimswww.cr.usgs.gov/pub/imswelcome/)

EOS Data Gateway Search Tips

Data Center:	LPDAAC
Sensor:	MODIS
Dataset:	MODIS/Aqua Land Surface Temperature/Emissivity 5-Min L2 Swath 1km V005
Geographic Extent:	Type Lat/Long Range or Draw on Map
Temporal Extent:	2007-01-01 to present

Product Information

Product Description http://modis-land.gsfc.nasa.gov/temp.htm

User Guide http://www.icess.ucsb.edu/modis/LstUsrGuide/MODIS_LST_products_Users_guide_C5.pdf

Algorithm Theoretical Basis Document (ATBD) http://modis.gsfc.nasa.gov/data/atbd/atbd_MYD11.pdf

MODIS Standard Data Products Catalog (http://modis.gsfc.nasa.gov/data/dataprod/index.php)

EOS Data Products Handbook Volume 1 (2000) (http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/data_products/vol1.php)

Contact Information

LP DAAC User Services U.S. Geological Survey (USGS) Earth Resources Observation and Science Center (EROS) 47914 252nd Street Sioux Falls, SD 57198-0001
Phone:	605-594-6116
Toll Free:	866-573-3222
	866-LPE-DAAC
Fax:	605-594-6963
Email:	LPDAAC@eos.nasa.gov
Web:	http://LPDAAC.usgs.gov

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