ASDC | MIL2ASLF

MISR Level 2

Entry Title: MISR Level 2 FIRSTLOOK Surface parameters V002

Entry ID: MIL2ASLF_2

Aerosols Radiation Budget

Description

MIL2ASLF_2 is the Multi-angle Imaging SpectroRadiometer (MISR) Level 2 FIRSTLOOK Surface parameters version 2. It contains directional reflectance properties, albedo (spectral and photosynthetically active radiation (PAR) integrated), fraction of photosynthetically active radiation absorbed by vegetation (FPAR), radiation parameters and terrain-referenced geometric parameters, produced using ancillary input from the previous time period. Data collection for this product is ongoing. This collection contains Leaf Area Index (LAI).

Multi-angle Imaging SpectroRadiometer (MISR) Level 2 Aerosol data products contain a variety of information on the Earth's atmosphere. The aerosol data include tropospheric aerosol optical depth on 17. 6-km centers, archived with a compositional model identifier and retrieval residuals, ancillary data including relative humidity, ozone optical depth, stratospheric aerosol optical depth and retrieval flags. MISR multi-angle imagery will be used to monitor global and regional trends inradiatively important to optical properties (optical depth, single scattering albedo, and size distribution) and amounts (mass loading) of natural and anthropogenic aerosols, including those arising from industrial and volcanic emissions, slash-and-burn agriculture, and desertification. Coupled with MISR's determinations of top-of-atmosphere and surface albedos, these data will provide a measure of the global aerosol forcing of the shortwave planetary radiation budget.

The MISR instrument consists of nine pushbroom cameras which measure radiance in four spectral bands. Global coverage is achieved in nine days. The cameras are arranged with one camera pointing toward the nadir, four cameras pointing forward, and four cameras pointing aftward. It takes seven minutes for all nine cameras to view the same surface location. The view angles relative to the surface reference ellipsoid are 0, 26.1, 45.6, 60.0, and 70.5 degrees. The spectral band shapes are nominally Gaussian, centered at 443, 555, 670, and 865 nm.

MISR itself is an instrument designed to view Earth with cameras pointed in 9 different directions. As the instrument flies overhead, each piece of Earth's surface below is successively imaged by all 9 cameras, in each of 4 wavelengths (blue, green, red, and near-infrared). The goal of MISR is to improve our understanding of the affects of sunlight on Earth, as well as distinguish different types of clouds, particles and surfaces. Specifically, MISR monitors the monthly, seasonal, and long-term trends in three areas: 1) amount and type of atmospheric particles (aerosols), including those formed by natural sources and by human activities; 2) amounts, types, and heights of clouds, and 3) distribution of land surface cover, including vegetation canopy structure.

DOI

Not Applicable

View Citations

VIEW RELATED INFORMATION

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

NASA EOS ATB Documents: MISR

ANOMALIES

ASDC Terra Spacecraft Loss of Accurate Orbit Data Record

DATA QUALITY

MISR Quality Statements for Current Products

GENERAL DOCUMENTATION

PI DOCUMENTATION

PRODUCT QUALITY ASSESSMENT

MISR Level 2 Aerosol/Surface Products Quality Statement - July 01, 2014

PRODUCT USAGE

PRODUCTION HISTORY

PUBLICATIONS

USER'S GUIDE

From GCMD Science Keywords:

PHOTOSYNTHETICALLY ACTIVE RADIATION
LAND USE CLASSES
TURBIDITY
PARTICULATES
CANOPY CHARACTERISTICS
AEROSOL EXTINCTION
REFLECTANCE
AIR QUALITY
LAND USE/LAND COVER CLASSIFICATION
PLANT CHARACTERISTICS
AEROSOL PARTICLE PROPERTIES
VEGETATION COVER

Albedo
Bidirectional Reflectance Factor (BRF)
Bidirectional Reflectance Factor (BRF) Model Parameters
Bihemispherical Reflectance
Directional Hemispherical Reflectance
Fractional Absorbed Photosynthetically Active Radiation (FAPAR)
Hemispherical-Directional Reflectance Factor
LAI (Leaf Area Index)
Normalized Difference Vegetation Index (NDVI) on a 1.1 km Grid

Data Distribution

File Format(s):

NetCDF-4

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Spatial Information

Spatial Coverage: (-90, 90), (-180, 180)
Spatial Coverage Type: Horizontal
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

GLOBAL

Temporal Information

Temporal Coverage: 2017-11-01 - Present

Platforms

Earth Observation Satellites

Terra

Earth Observing System, TERRA (AM-1)

MISR

Multi-Angle Imaging SpectroRadiometer

AN DF CF BF AF AA BA CA DA

Metadata Dates

Created on 2019-07-08

Last updated on 2022-01-31