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EDG Data Set Name
MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km ISIN Grid

Granule Shortname
MOD11A1

Data Set Characteristics
Area = ~ 10 x10 lat/long
Size = 1200 x1200 rows/columns
File Size = ~23MB
Resolution = 1 kilometer
Projection = Integerized Sinusoidal
Land Surface Temperature (LST) Data Type = 16-bit Integer
Emissivity Data Type = 8-bit Integer
Data Format = HDF-EOS
Science Data Sets (SDS) = 13

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 starting 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 MOD11A1 image shown above is an example of the MODIS Level 3 LST daily product at 1 km resolution. MOD11A1 is a geographically gridded version of the Level 2 daily LST product. It is generated by projecting MOD11_L2 pixels to Earth locations on an integerized sinusoidal mapping grid.

SDS	UNITS	DATA TYPE-bit	FILL VALUE	VALID RANGE	SCALING FACTOR	ADDITIONAL OFFSET
LST Day 1km	Kelvin	Unsigned 16	0	7500-65535	0.0200	na
QC Day	na	Unsigned 8	0	0-255	na	na
Day View Time	Hrs	Unsigned 8	0	0-240	0.1000	na
Day View Angle	Deg	Unsigned 8	0	0-180	0.5000	na
Clear Sky Day	na	Unsigned 16	0	0-65535	0.0005 PGEV2.5.1 0.0001 < V2.5.1	na
LST Night 1km	Kelvin	Unsigned 16	0	7500- 65535	0.0200	na
QC Night	na	Unsigned 8	0	0-255	na	na
Night View Time	Hrs	Unsigned 8	0	0-240	0.1000	na
Night View Angle	Deg	Unsigned 8	0	0-180	0.5000	na
Clear Sky Night	na	Unsigned 16	0	0-65535	0.0005 PGEV2.5.1 0.0001 < V2.5.1	na
Emissivity Band 31	na	Unsigned 8	0	1-255	0.0020	0.4900
Emissivity Band 32	na	Unsigned 8	0	1-255	0.0020	0.4900
* Columns_per_Global_ Grid_Row	na	Signed 32	0	0-43200	na	na

* SDS Columns_per_Global_Grid_Row is not included in version 003

View a Version Formatted for Printing

Order These Data through the EOS Data Gateway
MODIS/TERRA LAND SURFACE TEMPERATURE/EMISSIVITY DAILY L3 GLOBAL 1KM ISIN GRID V003

EOS Data Gateway Search Tips

Data Center:	LPDAAC
Sensor:	MODIS
Dataset:	MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km ISIN Grid
Geographic Extent:	Type Lat/Long Range or Draw on Map
Temporal Extent:	August 29, 2002 (2002241) - October 7, 2002 (2002280)

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/atbd_mod11.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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