|
| EDG Data Set Name |
Granule Shortname |
| MODIS/Aqua Land Surface Temperature/Emissivity 8-Day L3 Global 1km SIN Grid |
MYD11A2 |
| Version |
Acquisition Range |
Science Quality Status |
| V003 |
March 6 2003 (2003065) - February 1 2004 (2004032) |
Provisional |
| V004 |
July 4 2002 (2002185) |
Validated (Stage 1) |
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 |
-bit unsigned integer |
0 |
0 - 255 |
na |
na |
| the nights in clear-sky conditions and with validate LSTs |
na |
-bit unsigned integer |
0 |
0 - 255 |
na |
na |
*Quality Control Bit Index:
| Bit |
Long Name |
Key |
| 00-01 |
Mandatory QA flags |
00=Pixel produced, good quality, not necessary to examine more detailed QA
01=Pixel produced, other quality, recommend examination of more detailed QA
10=Pixel not produced due to cloud effects
11=Pixel not produced primarily due to reasons other than cloud (such as ocean
grid, grid not covered by all processed granules) |
| 02-03 |
Data quality flag |
00=good data quality
01=other quality data
10=TBD
11=TBD |
| 04-05 |
Emis Error flag |
00=average emissivity error <= 0.01
01=average emissivity error <= 0.02
10=average emissivity error <= 0.04
11=average emissivity error > 0.04 |
| 06-07 |
LST Error flag |
00=average LST error <= 1K
01=average LST error <= 2K
10=average LST error <= 3K
11=average LST error > 3K |
Print or save this information in .pdf format
View .pdf version 
 Retrieve the MYD11A2v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e0dps01u.ecs.nasa.gov:22000/OPS/drill?attrib=esdt&esdt;=MYD11A2.4&group;=MOLA
Via FTP Directory: ftp://e0dps01u.ecs.nasa.gov/MOLA/MYD11A2.004/
Order Data through the EOS Data Gateway
( http://edcimswww.cr.usgs.gov/pub/imswelcome/)
EOS Data Gateway Search Tips
| Source: |
Aqua |
| Sensor: |
MODIS |
| Dataset: |
MODIS/Aqua Land Surface Temperature/Emissivity 8-Day 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
Contact Information
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