EDG Data Set Name
MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 5km ISIN Grid V003

Granule Shortname
MOD11B1

Data Set Characteristics
Area = ~ 10 x10 lat/long
Size = 240 x240 rows/columns
File Size = ~2.2MB
Resolution = 5 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) = 16

Product Description
This MODIS Land Surface Temperature and Emissivity (LST/E) product provides per-grid temperature and emissivity values. Temperatures are extracted in Kelvin with a day/night LST algorithm applied to a pair of MODIS daytime and nighttime observations. This method retrieves the land-surface temperature and emissivities in bands 20, 22, 23, 29, and 31-32, simultaneously. This algorithms use MODIS data as input, including geolocation, radiance, cloud masking, atmospheric temperature and water vapor. The temperature/emissivity 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 color images shown above are examples of the MODIS Level 3 LST daily product at 5 km resolution averaged in the period of May 1-8, 2001, in 13 tiles covering USA. The first image is a color composite with histogram-equalization enhanced daytime LST image as red, histogram-equalization enhanced nighttime LST image as green and blue components. The second image is a color composite with histogram-equalization enhanced emissivity images in bands 31, 29, and 20 as red, green, and blue components.

SDS UNITS DATA TYPE-bit FILL VALUE VALID RANGE SCALING FACTOR ADDITIONAL OFFSET
LST_Day_5km 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
LST_Night_5km 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
Emissivity Band 20 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
Emissivity Band 22 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
Emissivity Band 23 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
Emissivity Band 29 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
Emissivity Band 31 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
Emissivity Band 32 Kelvin Unsigned 8 0 1-255 0.0020 0.4900
LST_Day_5km_Aggregated_from_1km Kelvin Unsigned 16 0 7500-65535 0.0200 na
LST_Night_5km_Aggregated_from_1km Kelvin Unsigned 16 0 7500-65535 0.0200 na

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

EOS Data Gateway Search Tips
Data Center: EDC-ECS
Sensor: MODIS
Dataset: MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 5km ISIN Grid V003
Geographic Extent: Type Lat/Long Range or Draw on Map
Temporal Extent: 2001-03-06 to present

Product InformationSkip past Product Information Links
Product Description
(http://modis-land.gsfc.nasa.gov/products/products.asp?ProdFamID=8)

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

Algorithm Theoretical Basis Document (ATBD)
(http://modarch.gsfc.nasa.gov/MODIS/ATBD/atbd.html)

MODIS Standard Data Products Catalog
(http://modarch.gsfc.nasa.gov/MODIS/DATAPROD/dataprodcat.html)

EOS Data Products Handbook Volume 1 (2000)
(http://eospso.gsfc.nasa.gov/eos_homepage/misc_html/data_prod.html )