Data Set Characteristics
Area = ~ 1100 x 1100 km
Image Dimensions= 2 (1200x1200 row/column)
Average File Size = 19 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 MYD11A2 image shown was retrieved from MODIS data between September 6-13, 2002 in the eastern Mediterranean region (h20v05). Turkey is to the North, Egypt to the South, and the island of Cyprus is in the Northeast corner of the sea. The image is an example of the MODIS Level 3 LST 8-Day product at 1 km resolution. MYD11A2 is a composited version of the Level 3 daily LST product.
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
8-Day 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
Average time of daytime Land-surface Temperature observation
Hrs
8-bit unsigned integer
0
0 - 240
0.1000
na
Average view zenith angle of daytime Land-surface Temperature
Degree
8-bit unsigned integer
255
0 - 130
1.0000
-65.0000
8-Day 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
Average time of nighttime Land-surface Temperature observation
Hrs
8-bit unsigned integer
0
0 - 240
0.1000
na
Average 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
the days in clear-sky conditions and with validate LSTs
na
8-bit unsigned integer
0
0 - 255
na
na
the nights in clear-sky conditions and with validate LSTs
LP DAAC User Services
U.S. Geological Survey (USGS)
Earth Resources Observation and Science Center (EROS)
47914 252nd Street
Sioux Falls, SD 57198-0001