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Advanced Solid-state Array Spectroradiometer (ASAS)

Metadata Updated: December 7, 2023

The Advanced Solid-state Array Spectroradiometer (ASAS) data collection contains data collected by the ASAS sensor flown aboard NASA aircraft. A fundamental use of ASAS data is to characterize and understand the directional variability in solar energy scattered by various land surface cover types (e.g.,crops, forests, prairie grass, snow, or bare soil). The sensor's Bidirectional Reflectance Distribution Function determines the variation in the reflectance of a surface as a function of both the view zenith angle and solar illumination angle.

The ASAS sensor is a hyperspectral, multiangle, airborne remote sensing instrument maintained and operated by the Laboratory for Terrestrial Physics at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The ASAS instrument is mounted on the underside of either NASA C-130 or NASA P-3 aircraft and is capable of off-nadir pointing from approximately 70 degrees forward to 55 degrees aft along the direction of flight. The aircraft is flown at an altitude of 5000 - 6000 meters (approximately 16,000 - 20,000 ft.).

Data in the ASAS collection primarily cover areas over the continental United States, but some ASAS data are also available over areas in Canada and western Africa. The ASAS data were collected between 1988 and 1994.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023
Publisher DOI/USGS/EROS
Maintainer
Identifier C1220566261-USGS_LTA
Data First Published 1988-06-26
Language en-US
Data Last Modified 2019-03-25
Category EOSDIS, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Land Processes Distributed Active Archive Center. 1998-01-01. Advanced Solid-state Array Spectroradiometer Data Collection. Sioux Falls, South Dakota, USA. Archived by National Aeronautics and Space Administration, U.S. Government, U.S. Geological Survey. Remote Sensing Image.
Creator Land Processes Distributed Active Archive Center
Data Presentation Form Remote Sensing Image
Harvest Object Id b2f0c6ff-b3f7-4de2-9a72-73f4469050a7
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1220566261-USGS_LTA.html
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Release Place Sioux Falls, South Dakota, USA
Source Datajson Identifier True
Source Hash c0ac49ca5af6455df993484db6bddaf60c438b8b9af87cd2bdfa020e230dce3c
Source Schema Version 1.1
Spatial
Temporal 1988-06-26T00:00:00Z/2022-01-17T00:00:00Z

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