Expedited ASTER L1B Registered Radiance at the Sensor
Entry ID: AST_L1BE

[ Get Data ]
[ Update this Record ]

Summary
Abstract: The Expedited ASTER Level-1B Registered Radiance at the Sensor data set is produced with the express purpose of providing 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. The granule content of this expedited data set is subject to change, because individual granules are held for a maximum of 30 days past ingest, then deleted. 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 the 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

V002 data set release date: 2001-04-27
V003 data set release date: 2002-05-03
The key determinants between these versions are the use of a newer algorithm with an improved set of radiometric calibration and geometric correction coefficients databases in version 003.

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): ~63 MB
SWIR (4 through 9): ~32 MB
TIR (10 through 14): ~6 Total: 97 Megabytes
Units: w/m2/sr/µm
Projection: Universal Transverse Mercator (UTM)
Data Format: HDF-EOS
Vgroup Data Fields = 14

Related URL
Link: GET DATA > REVERB
Description: Interface to search, discover, and access EOS data products, and invoke available data services.


Link: GET DATA > ON-LINE ARCHIVE
Description: LP DAAC Data Pool provides direct access to all currently available MODIS products and the ability to download them via HTTP.


Link: VIEW PROJECT HOME PAGE
Description: The Land Processes Distributed Active Archive Center (LP DAAC) is one of several discipline-specific data centers within the NASA Earth Observing System Data and Information System (EOSDIS). The LP DAAC Web page provides information about available data products, services, documentation, order interfaces, and tools.


Link: VIEW PROJECT HOME PAGE
Description: The ASTER home page is maintained through NASA's Jet Propulsion Laboratory and documents various aspects of the ASTER mission.


Link: VIEW RELATED INFORMATION
Description: Detailed product descriptions and additional information including links for data access, user guides, and customer support, etc.


Geographic Coverage
 N: 83.0 S: -83.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Land Processes Distributed Active Archive Center (LP DAAC)
Dataset Title: Expedited ASTER L1B Registered Radiance at the Sensor
Dataset Release Date: 2001-04-27
Dataset Release Place: Sioux Falls, South Dakota, USA
Dataset Publisher: U.S. Geological Survey
Version: V002, V003
Online Resource: https://lpdaac.usgs.gov


Temporal Coverage
Start Date: 2000-03-12


Location Keywords
GEOGRAPHIC REGION > GLOBAL LAND


Data Resolution
Latitude Resolution: 90m
Longitude Resolution: 90m


Science Keywords
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >REFLECTED INFRARED    [Definition]
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >THERMAL INFRARED    [Definition]
SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE IMAGERY    [Definition]
SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE RADIANCE    [Definition]


ISO Topic Category
IMAGERY/BASE MAPS/EARTH COVER


Platform
TERRA >Earth Observing System, TERRA (AM-1)    [Information]


Instrument
ASTER >Advanced Spaceborne Thermal Emission and Reflection Radiometer    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Quality
Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER...) for more details.


Access Constraints
None.


Use Constraints
None.


Keywords
LP DAAC
EOSDIS
USGS/EROS
ESIP
USGS
LPDAAC


Data Set Progress
IN WORK


Originating Center
USGS/EROS


Data Center
Land Processes Distributed Active Archive Center    [Information]
Data Center URL: https://lpdaac.usgs.gov/
Dataset ID: AST_L1BE

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



Distribution
Distribution_Media: HTTP
Distribution_Format: HDF-EOS


Personnel
LP DAAC USER SERVICES
Role: TECHNICAL CONTACT
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


Publications/References
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) publication references: [available online at http://asterweb.jpl.nasa.gov/asterbiblio20120719.pdf]

National Aeronautics and Space Administration, revised 2006, EOS Reference Handbook, a Guide to NASA's Earth Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 261 p. [available online in pdf format at http://eospso.gsfc.nasa.gov/sites/default/files/publications/2006Re...].

Creation and Review Dates
DIF Creation Date: 2002-05-20
Last DIF Revision Date: 2013-08-26

[ Update this Record ]


Link to Web Site