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EDG Data Set Name
ASTER Expedited L1B Registered Radiance at the Sensor

Granule Shortname
AST_L1BE

Data Set Characteristics
Area: ~60 km x 60 km

Image Dimensions:
	VNIR: 4200 rows x 4980 columns
	SWIR: 2100 rows x 2490 columns
	TIR: 700 rows x 830 columns
File Size:
	VNIR (1, 2, 3N) = 62,748,000 Bytes
	SWIR (4 through 9) = 31,374,000 Bytes
	TIR (10 through 14) = 5,810,000 Bytes
	Total = 97 Megabytes
Spatial Resolution:
	VNIR = 15 m SWIR = 30 m TIR = 90 m
Projection: Universal Transverse Mercator (UTM) Data Format: HDF-EOS Vgroup Data Fields = 14

Product Description
The ASTER Expedited L1B Registered Radiance at the Sensor data set is produced with the express purpose of providing the ASTER Science Team members data of their particular interest in quick turn-around time from the moment the data are acquired. This is usually done to support on-going field calibration and validation efforts or to support emergency response to natural disasters when processed Level-1 data with minimum turn-around time would prove beneficial in initial damage or impact assessments. This data set is expected to be publicly available for a period of 30 days after which time it will be removed from the archive. This is done because the routinely processed (Production Data Set or PDS) version of this data set will be available from Japan in due course and available for search and order from the LP DAAC archives. ASTER Expedited Data Sets (EDS) serve the short-term requirements of a small group of scientists and fulfill immediate imagery needs during times of natural disasters.

The general product description details as described for the ASTER Level-1B Data Set - Registered Radiance at Sensor apply to the expedited data set with a few notable exceptions. These include:

• the Expedited Level - 1B data set does not contain the VNIR 3B (aft-viewing) Band
• this data set does not have short-term calibration for the Thermal Infrared (TIR) sensor
• the registration quality of this data set is likely to be lower, and also vary from scene to scene

The Level-0 data downlink from the Tracking Data Relay Satellite System (TDRSS) at White Sands, NM is received at the EOS Data Operations System (EDOS) facility at the Goddard Space Flight Center (GSFC). Following some pre-processing, EDOS directly transmits that data (via the GSFC DAAC) to LP DAAC where the data are processed and the level-1 EDS is produced. This product is created by applying the radiometric calibration and geometric correction coefficients to the Level-1AE data. It is also geometrically registered and projected to Universal Transverse Mercator (UTM) projection. There is no browse product provided for the expedited L1B data set.

Vgroup Data Fields/ Spectral Range (µm)	Units	Data Type	Valid Range	Telescope Pointing Capability
VNIR (15 Meters)
Band 1 (0.52 - 0.60)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 24°
Band 2 (0.63 - 0.69)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 24°
Band 3N (0.78 - 0.86)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 24°
SWIR (30 Meters)
Band 4 (1.600 - 1.700)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
Band 5 (2.145 - 2.185)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
Band 6 (2.185 - 2.225)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
Band 7 (2.235 - 2.285)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
Band 8 (2.295 - 2.365)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
Band 9 (2.360 - 2.430)	w/m2/sr/µm	8-bit unsigned integer	0 - 255	+/- 8.55°
TIR (90 Meters)
Band 10 (8.125 - 8.475)	w/m2/sr/µm	16-bit unsigned integer	0 - 65535	+/- 8.55°
Band 11 (8.475 - 8.825))	w/m2/sr/µm	16-bit unsigned integer	0 - 65535	+/- 8.55°
Band 12 (8.925 - 9.275)	w/m2/sr/µm	16-bit unsigned integer	0 - 65535	+/- 8.55°
Band 13 (10.25 - 10.95)	w/m2/sr/µm	16-bit unsigned integer	0 - 65535	+/- 8.55°
Band 14 (10.95 - 11.65)	w/m2/sr/µm	16-bit unsigned integer	0 - 65535	+/- 8.55°

View a Version Formatted for Printing

Order These Data through the EOS Data Gateway
ASTER EXPEDITED L1B REGISTERED RADIANCE AT THE SENSOR V003

EOS Data Gateway Search Tips

Data Center:	LPDAAC
Sensor:	ASTER
Dataset:	ASTER Expedited L1B Registered Radiance at the Sensor
Geographic Extent:	Type latitude/longitude range or delineate a geographic search window
Temporal Extent:	March 4, 2000 to present

Product Information

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

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

ASTER ATBD (http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/atbd/docs/ASTER/atbd-ast-01.pdf)

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

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

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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