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MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 5km SIN Grid V041

Entry ID: MOD11B141

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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 Daily L3 Global 5 km Grid (Short name: MOD11B1), is tile-based and gridded in the Sinusoidal projection, and produced daily at 5 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 V4 LST/E L3 Global 5 km Grid product (Short name: MOD11B1) incorporates 5 km pixels, which is produced using the day/night LST algorithm (Wan and Li, 1997). This algorithm extracts average temperatures (in Kelvin) and applies them to a pair of MODIS daytime and nighttime observations. This method yields 1 K accuracy for materials with known emissivities. The six thermal Band emissivities are estimated through a classification-based look-up table (LUT). The data inputs include the MODIS L1B calibrated and geolocated radiances, geolocation, cloud mask, atmospheric profiles, land and snow cover.

The V41 MOD11B1 products are a gridded version of the level-2 LST product (MOD11_L2) mapped and projected on 5 km (precisely 4.63 km) Sinusoidal grids. The MOD11B1 product comprises the following Science Data Set (SDS) layers for daytime and nighttime observations: LSTs, quality control assessments, observation times, view zenith angles, and emissivities from Bands 20, 22, 23, 29, 31, and 32. It also includes daytime and nighttime LSTs generated from the 1 km, Band 31 of the level-2 MOD11_L2 product aggregated to 5 km grids.

The V41 Terra/MODIS LST/E products, including MOD11B1, 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 MOD11B1 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 x 1100 km (Latitude/Longitude)
Image Dimensions 240 x 240 (Rows/Columns)
Map Projection Sinusoidal
File Size (Average) .3 MB
Data Format HDF-EOS
Number of Science Data Sets (SDS) 17

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.

Link: GET DATA > ECHO

Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Link: VIEW PROJECT HOME PAGE

Description: The Land Processes Distributed Active Archive Center (LP DAAC) home page contains information about the LP DAAC, its products, and its services. The Web site also provides access to NASA's next generation Earth Science discovery tool (Reverb), which is a Web-based search, browse and order interface for a variety of EOS data sets.

Link: VIEW PROJECT HOME PAGE

Description: The MODIS Land home page is maintained through NASA's Goddard Space Flight Center and documents various aspects of the land portion of the MODIS program.

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 81.0

S: -81.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Land Processes Distributed Active Archive Center

Dataset Title: MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 5km 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

Temporal Coverage

Start Date: 2007-01-01

Location Keywords

GEOGRAPHIC REGION > GLOBAL

Data Resolution

Latitude Resolution: 5000 m
Longitude Resolution: 5000 m
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree

Science Keywords

LAND SURFACE > LAND TEMPERATURE > LAND SURFACE TEMPERATURE

LAND SURFACE > SURFACE RADIATIVE PROPERTIES > EMISSIVITY

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

GEOSCIENTIFIC INFORMATION

Platform

TERRA > Earth Observing System, TERRA (AM-1)

Instrument

MODIS > Moderate-Resolution Imaging Spectroradiometer

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

CWIC > CEOS WGISS Integrated Catalog

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

Ancillary Keywords

IMAGERY

DAAC

Data Set Progress

IN WORK

Originating Center

USGS/EROS

Data Center

Land Processes Distributed Active Archive Center

Data Center URL: https://lpdaac.usgs.gov/

Data Center Personnel
Name: LP DAAC USER SERVICES Phone: (Toll Free) (866) 573-3222 Phone: (605) 594-6116 Fax: (605) 594-6963 Email: LPDAAC at usgs.gov Contact Address: 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 Country: USA