[Personnel: Last_Name='LP DAAC USER SERVICES']
MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V041Entry ID: MOD11A141
Abstract: The MODIS/Terra Land Surface Temperature and Emissivity (LST/E) products provide per-pixel temperature and emissivity values in a sequence of swath-based to grid-based global products. The MODIS/Terra LST/E Daily L3 Global 1 km Grid product (Short name: MOD11A1), is tile-based and gridded in the Sinusoidal projection, and produced daily at 1 km spatial resolution.
The ... MODIS/Terra version-041 (V41) products use a modified version-4 (V4) LST algorithm and version-5 (V5) data inputs. The V41 products primarily address underestimation problems in the V5 Climate Modeling Grid (CMG) products. Recent validation activities reveal that the V5 CMG products underestimate LSTs up to 6K especially in desert and semi-arid regions. The production date for this collection starts with MODIS/Terra data acquisition from 2007-001. This beginning date is driven by the availability of the MODIS V5 data inputs (level-1B radiance data, geolocation data, cloud mask, atmospheric profiles, and land and snow cover data).
The MODIS/Terra V41 LST/E Daily L3 Global 1 km Grid (Short name: MOD11A1) products incorporate 1 km pixels, which are produced daily using the generalized split-window LST algorithm. This algorithm is optimally used to separate ranges of atmospheric column water vapor and lower boundary air surface temperatures into tractable sub-ranges. The surface emissivities in Bands 31 and 32 are estimated from land cover types.
The V41 Terra/MOD11A1 products are projected in a Sinusoidal grid by mapping the level-2 LST product (MOD11_L2) on 1 km (precisely 0.928 km) grids. The MOD11A1 product comprises the following Science Data Set (SDS) layers for daytime and nighttime observations: LSTs, quality control assessments, observation times, view zenith angles, clear sky coverages, and Bands 31 and 32 emissivities from land cover types.
The V41 MODIS LST/E products, including MOD11A1, are validated to Stage-2. Further details regarding MODIS land product validation for the LST/E products are available from the MODIS land team validation site.
The V41 MOD11A1 product’s acquisition range started January 1, 2007 (2007-001) and will continue until the V6 reprocessing completes in 2011. The V41 LST products from 2007-001 will remain consistent with similar products from V4, and hence are amenable to combine them in a time series analysis. Users should exercise caution, and not mix the V4.x (i.e., V4 and V41) and V5 LST products in their analysis.
Data Set Characteristics
Area ~1100 km x 1100 km (Latitude/Longitude)
Image Dimensions 1200 x 1200 (Rows/Columns)
Map Projection Sinusoidal
File Size (Average) 2.2 MB
Data Format HDF-EOS
Number of Science Data Sets (SDS) 12
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center
Dataset Title: MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V041
Dataset Release Date: 2009
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological Survey
Data Presentation Form: Remote Sensing Image
Start Date: 2007-01-01
Latitude Resolution: 1000 m
Longitude Resolution: 1000 m
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
Quality For more information on potential sensor-related anomalies, consult the following URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=...
Access Constraints None
Use Constraints None
Data Set Progress
Role: TECHNICAL CONTACT
Phone: (Toll Free) (866) 573-3222
Phone: (605) 594-6116
Fax: (605) 594-6963
Email: LPDAAC at usgs.gov
LP DAAC User Services U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center 47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
EOS Data Products Handbook Volume 1 (2004) Revised
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2010-06-10
Last DIF Revision Date: 2012-02-16