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MODIS/Terra Land Surface Temperature/Emissivity 5-Min L2 Swath 1km V041

Entry ID: MOD11_L241

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Summary

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 5-Minute L2 Swath 1 km data set (Short name: MOD11_L2), is produced daily at 5-minute increments, and covers both daytime and nighttime acquisitions including the polar regions.
...
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 level-2 LST/E data (Short name: MOD11_L2) incorporate 1 km pixels, which are produced daily at 5-minute increments 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 MOD11_L2 data set comprises swath data obtained in 5-minute sensor collection periods, and includes the following Science Data Set (SDS) layers: LST, quality control assessment, error estimates, Bands 31 and 32 emissivities, zenith angle of the pixel view, observation time, and the geographic coordinates for every five scan lines and samples. Produced daily, MOD11_L2 is an unprojected level-2 data set, which provides the input for the level-3 products.

The V41 Terra/MODIS LST/E products, including the MOD11_L2, are validated to Stage-2 with well-defined uncertainties over a range of representative conditions. Further details regarding MODIS land product validation for the LST/E products are available from the MODIS land team validation site.

The V41 MOD11_L2 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 ~2330 km x 2000 km (Latitude/Longitude)
Image Dimensions 2030 x 1354 (Rows/Columns)
Map Projection None (Swath data)
File Size (Average) 2.2 MB
Data Format HDF-EOS
Number of Science Data Sets (SDS) 9

Related URL

Link: GET DATA > ON-LINE ARCHIVE

Description: The Data Pool (On-line Archive) provides access to all MODIS products, and a rolling archive of the ASTER level-1B products that cover the U.S. and its Territories.

Geographic Coverage

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Spatial coordinates

N: -1.0

S: -3.0

E: 31.0

W: 29.0

Temporal Coverage

Start Date: 1990-01-01

Stop Date: 1994-01-01

Location Keywords

CONTINENT > AFRICA > EASTERN AFRICA > RWANDA

CONTINENT > AFRICA

CONTINENT > AFRICA > EASTERN AFRICA

Science Keywords

ATMOSPHERE > PRECIPITATION > RAIN

BIOSPHERE > ECOLOGICAL DYNAMICS

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

AURA > Aura

Instrument

HIRDLS > High-Resolution Dynamics Limb Sounder

Project

AURA > Earth Observing System (EOS), AURA

EOS > Earth Observing System

Quality Please review the HIRDLS Data Description and Quality Version 7 Document for details on the quality of the data.

http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/HIRDLS/documents/H...

Use Constraints Please review the HIRDLS Data Description and Quality Version 7 Document for recommendations on the use of the data.

http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/HIRDLS/documents/H...

Data Set Progress

COMPLETE

Data Center

Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP Phone: 301-614-5224 Fax: 301-614-5268 Email: gsfc-help-disc at lists.nasa.gov Contact Address: Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Distribution

Distribution Media: FTP/HTTP

Distribution Size: 2 GB

Distribution Format: HDF-EOS5

Fees: None

Personnel

JOHN C. GILLE

Role: INVESTIGATOR

Phone: 303-497-8062

Email: gille at ucar.edu

Contact Address:

National Center for Atmospheric Research

PO Box 3000

City: Boulder

Province or State: Colorado

Postal Code: 80307

Country: USA

LESLEY J GRAY

Role: INVESTIGATOR

Phone: +44/0 1865 272926

Fax: +44/0 1865 272923

Email: gray at atm.ox.ac.uk

Contact Address:

University of Oxford Department of Physics

Clarendon Laboratory

Parks Road

City: Oxford

Postal Code: OX1 3PU

Country: UNITED KINGDOM

JAMES EDWARD JOHNSON

Role: DIF AUTHOR

Phone: 301-614-5121

Email: James.Johnson at nasa.gov

Contact Address:

NASA Goddard Space Flight Center

Code 610.2

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

List of HIRDLS publications can be found at http://www.eos.ucar.edu/hirdls/docs/

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2013-04-30

Last DIF Revision Date: 2013-05-07

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