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EDG Data Set Name
ASTER On-Demand L2 Surface Kinetic Temperature

Granule Shortname
AST_08

Data Set Characteristics
Area: ~60 km x 60 km
Image Dimensions: 700 rows x 830 columns
File Size: ~4 Megabytes
Spatial Resolution: TIR: 90 m
Units: (°K) (T multiplied by 0.1)
Projection: Universal Transverse Mercator (UTM)

Data Format:	HDF-EOS
	GeoTIFF

Vgroup Data Fields: Surface Radiance: 1

Product Description
The ASTER On-Demand L2 Surface Kinetic Temperature is an on-demand product generated using the five thermal infrared (TIR) bands (acquired either during the day or night time) between 8 and 12 µm spectral range. It contains surface temperatures at 90 m spatial resolution for the land areas only. Surface Kinetic Temperature provides a vital input to studies of volcanism, thermal inertia, surface energy, and high-resolution mapping of fires.

This product is derived using the same algorithm as the Surface Emissivity Product. Surface kinetic temperature is determined by applying Planck's Law using the emissivity values from the Temperature-Emissivity Separation (TES) algorithm, which uses atmospherically corrected ASTER Surface Radiance (TIR) data. The TES algorithm first estimates emissivities in the TIR channels using the Normalized Emissivity Method (NEM). These estimates are used along with Kirchoff's Law to account for the land-leaving TIR radiance that is due to sky irradiance. That figure is subtracted from TIR radiance iteratively to estimate the emitted radiance from which temperature is calculated using the NEM module.

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Ordering ASTER On-Demand L2 Surface Temperature
The ASTER Surface Kinetic Temperature product can be ordered through the EOS Data Gateway. The process and procedures for ordering this product are described in the following tutorial: http://lpdaac.usgs.gov/tutorial/. As part of that process, it is necessary to first select an ASTER Level 1A granule from the EOS Data Gateway.

Product Information

Release Notes (http://asterweb.jpl.nasa.gov/content/03_data/01_Data_Products/release_surface_kinetic_temperatur.htm )

ASTER Level-1 Data Products Specification (http://asterweb.jpl.nasa.gov/content/03_data/04_Documents/ASTER_L1_Product_Spec_Ver_1.3_July01.pdf)

ASTER User Handbook (http://asterweb.jpl.nasa.gov/content/03_data/04_Documents/aster_user_guide_v2.pdf)

ASTER Level-1 Users Guide (http://www.science.aster.ersdac.or.jp/en/documnts/users_guide/index.html)

ASTER Higher-Level Product User Guide (http://asterweb.jpl.nasa.gov/content/03_data/04_Documents/ASTERHigherLevelUserGuideVer2May01.pdf)

Algorithm Theoretical Basis Document (ATBD) (http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/atbd/docs/ASTER/atbd-ast-05-08.pdf)

ASTER JPL Web Page (http://asterweb.jpl.nasa.gov/data_products.asp)

EOS Data Products Handbook (Volume 1, Revised 2004) (http://eospso.gsfc.nasa.gov/ftp_docs/data_products_1.pdf)

Contact Information

LP DAAC User Services U.S. Geological Survey (USGS) Earth Resources Observation and Science Center (EROS) 47914 252nd Street Sioux Falls, SD 57198-0001
Phone:	605-594-6116
Toll Free:	866-573-3222
	866-LPE-DAAC
Fax:	605-594-6963
Email:	LPDAAC@eos.nasa.gov
Web:	http://LPDAAC.usgs.gov

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