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EDG Data Set Name	Granule Shortname
MODIS/Aqua Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid�	MYD11A1

Version	Acquisition Range	Science Quality Status
V003	March 6 2003 (2003065) - February 1 2004 (2004032)	Provisional
V004	July 4 2002 (2002185)	Validated Stage 1 as of July 4, 2002

Data Set Characteristics
Area = ~ 1100 x 1100 km
Image Dimensions= 2 (1200x1200 row/column)
Average File Size = 23 MB
Resolution = 1 kilometer (actual 0.93km)
Projection = Sinusoidal
Land Surface Temperature (LST) Data Type = 16-bit Unsigned Integer
Emissivity Data Type = 8-bit Unsigned Integer
Data Format = HDF-EOS
Science Data Sets (SDS) = 12

Product Description
MODIS Land Surface Temperature and Emissivity (LST/E) products provide per-pixel temperature and emissivity values. Temperatures are extracted in Kelvin with a view-angle dependent algorithm applied to direct observations. This method yields 1 K accuracy for materials with known emissivities. The view angle information is included in each LST/E product. Emissivities are estimates derived from applying algorithm output to land cover database information. The LST/E algorithms use MODIS data as input, including geolocation, radiance, cloud masking, atmospheric temperature, water vapor, snow, and land cover. The temperature products in turn are key inputs to many of the high level MODIS products and provide data for global temperature mapping and change observation. On land, soil and canopy temperature are among the main determinants of the rate of growth of vegetation and they govern seasonal start and termination of growth. Hydrologic processes such as evapotranspiration and snow and ice melt are highly sensitive to surface temperature fluctuation, which is also an important discriminating factor in classification of land surface types.

The false-colored image shown was retrieved February 5, 2004 over southern Iran and Afghanistan, west Pakistan, and Oman. The image is an example of the MODIS Level 3 LST daily product from Aqua at 1 km resolution. MYD11A1 is a geographically gridded version of the Level 2 daily LST product. It is generated by projecting MYD11_L2 pixels to Earh locations on a sinusoidal mapping grid.

NOTE: These products are validated, meaning that product uncertainties are well defined over a range of representative conditions. Although there may be later improved versions, these data are ready for use in scientific publications.

SDS	Units	Data Type-bit	Fill Value	Valid Range	Multiply by Scale Factor	Add ADDITIONAL OFFSET
Daily daytime 1km grid Land-surface Temperature	Kelvin	16-bit unsigned integer	0	7500 - 65535	0.0200	na
*Quality control for daytime LST and emissivity	na	8-bit unsigned integer	0	0 - 255	na	na
Time of daytime Land-surface Temperature observation	Hrs	8-bit unsigned integer	0	0 - 240	0.1000	na
View zenith angle of daytime Land-surface Temperature	Degree	8-bit unsigned integer	255	0 - 130	1.0000	-65.0000
Daily nighttime 1km grid Land-surface Temperature	Kelvin	16-bit unsigned integer	0	7500 - 65535	0.0200	na
*Quality control for nighttime LST and emissivity	na	8-bit unsigned integer	0	0 - 255	na	na
Time of nighttime Land-surface Temperature observation	Hrs	8-bit unsigned integer	0	0 - 240	0.1000	na
View zenith angle of nighttime Land-surface Temperature	Degree	8-bit unsigned integer	255	0 - 130	1.0000	-65.0000
Band 31 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
Band 32 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
Day clear-sky coverage	na	16-bit unsigned integer	0	0 - 65535	0.0005	na
Night clear-sky coverage	na	16-bit unsigned integer	0	0 - 65535	0.0005	na

*MODIS Land Surface Temperature/Emissivity QA Science Data Sets

View a Version Formatted for Printing

Retrieve the MYD11A1v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e4eil01u.ecs.nasa.gov:22000/WebAccess/drill?attrib=esdt&esdt=MYD11A1.4&group=MOLA
Via FTP Directory: ftp://e4ftl01u.ecs.nasa.gov/MOLA/MYD11A1.004/

Order These Data through the EOS Data Gateway
MODIS/AQUA LAND SURFACE TEMPERATURE/EMISSIVITY DAILY L3 GLOBAL 1KM SIN GRID V004

EOS Data Gateway Search Tips

Source:	Aqua
Sensor:	MODIS
Dataset:	MODIS/Aqua Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid
Spatial:	HORIZONTALTILENUMBER Max/Min VERTICALTILENUMBER Max/Min
Geographic Extent:	Type Lat/Long Range or Draw on Map
Temporal Extent:	2003-03-06 to 2004-02-01 (V003); 2002-07-04 to present (V004)

Product Information

Product Description (http://landval.gsfc.nasa.gov/MODLAND/temp.htm)

User Guide (http://www.icess.ucsb.edu/modis/LstUsrGuide/usrguide.html)

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

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

EOS Data Products Handbook Volume 2 (2000) (http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/data_products/vol2.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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