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EDG Data Set Name	Granule Shortname
MODIS/Terra Land Surface Temperature/Emissivity Monthly L3 Global 0.05Deg CMG	MOD11C3

Version	Acquisition Range	Science Quality Status
V004	March 1, 2000 (2000061)	Validated Stage 1 as of June 1, 2000 by virtue of MOD11B1

Data Set Characteristics
Area = Global
Image Dimensions= 2 (3600x7200 row/column)
Average File Size = 593 MB
Resolution = 0.05 degree (~5.6km at the Equator)
Projection = Latitude/Longitude Grid
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) = 16

Product Description
The MODerate-resolution Imaging Spectroradiometer (MODIS) Land Surface Temperature and Emissivity (LST/E) products provide per-pixel temperature and emissivity values. Averaged temperatures are extracted in Kelvin with a day/night LST algorithm applied to a pair of MODIS daytime and nighttime observations. This method yields 1 K accuracy for materials with known emissivities, and view angle information is included in each LST/E product. Emissivities in bands 20, 22, 23, 29, and 31-32 are estimates derived from applying algorithm output to 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 MODIS/Terra Land Surface Temperature/Emissivity Monthly L3 Global 0.05Deg CMG product, MOD11C3, provides temperature and emissivity values on a 0.05 degree latitude/longitude climate modeling grid (CMG). MOD11C3 is simply composited and averaged from the global 8-day CMG product (MOD11C2) over a period of 32 days.

The false-colored MOD11C3 image shown was retrieved from MODIS data during May 2003. MODIS temperature products 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.

NOTE: This product is still experimental in nature upon its initial release. More investigations are underway to assess the scientific quality.

SDS	UNITS	DATA TYPE -bit	FILL VALUE	VALID RANGE	Multiply by SCALE FACTOR	Add ADDITIONAL OFFSET
Monthly daytime 3min CMG 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
Average time of daytime LST observation (UTC)	Hrs	8-bit unsigned integer	0	0 - 120	0.2000	na
Average view zenith angle of daytime Land-surface Temperature	Degree	8-bit unsigned integer	255	0 - 130	1.0000	-65.0000
The days in clear-sky conditions and with validate LSTs	na	32-bit unsigned integer	0	0 - 4294967296	na	na
Monthly nighttime 3min CMG 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
Average time of nighttime LST observation (UTC)	Hrs	8-bit unsigned integer	0	1 - 120	0.2000	na
Average view zenith angle of nighttime Land-surface Temperature	Degree	8-bit unsigned integer	255	0 - 130	1.0000	-65.0000
The nights in clear-sky conditions and with validate LSTs	na	32-bit unsigned integer	0	0 - 4294967296	na	na
Band 20 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
Band 22 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
Band 23 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
Band 29 emissivity	na	8-bit unsigned integer	0	1 - 255	0.0020	0.4900
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

*MODIS Land Surface Temperature/Emissivity QA Science Data Sets

Retrieve the MOD11C3v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e4eil01u.ecs.nasa.gov:22000/WebAccess/drill?attrib=esdt&esdt=MOD11C3.4&group=MOLT
Via FTP Directory: ftp://e4ftl01u.ecs.nasa.gov/MOLT/MOD11C3.004/

Order These Data through the EOS Data Gateway
MODIS/TERRA LAND SURFACE TEMPERATURE/EMISSIVITY MONTHLY L3 GLOBAL 0.05DEG CMG V004

EOS Data Gateway Search Tips

Data Center:	LPDAAC
Sensor:	MODIS
Dataset:	MODIS/Terra Land Surface Temperature/Emissivity Monthly L3 Global 0.05Deg CMG
Geographic Extent:	Global
Temporal Extent:	2002-08-01 to present

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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