Introducing the 4.4 km spatial resolution Multi-Angle Imaging SpectroRadiometer (MISR) aerosol product
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Published:2020-02-10
Issue:2
Volume:13
Page:593-628
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ISSN:1867-8548
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Container-title:Atmospheric Measurement Techniques
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language:en
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Short-container-title:Atmos. Meas. Tech.
Author:
Garay Michael J., Witek Marcin L.ORCID, Kahn Ralph A.ORCID, Seidel Felix C.ORCID, Limbacher James A., Bull Michael A., Diner David J., Hansen Earl G., Kalashnikova Olga V., Lee HuikyoORCID, Nastan Abigail M., Yu YanORCID
Abstract
Abstract. The Multi-angle Imaging SpectroRadiometer (MISR)
instrument has been operational on the National Aeronautics and Space
Administration (NASA) Earth Observing System (EOS) Terra satellite since
early 2000, creating an extensive data set of global Earth observations.
Here we introduce the latest version of the MISR aerosol products. The level
2 (swath) product, which is reported on a 4.4 km spatial grid, is designated as version 23 (V23) and contains retrieved aerosol optical depth (AOD) and
aerosol particle property information derived from MISR's multi-angle
observations over both land and water. The changes from the previous version
of the algorithm (V22) have significant impacts on the data product and its
interpretation. The V23 data set is created from two separate retrieval
algorithms that are applied over dark water and land surfaces, respectively.
Besides increasing the horizontal resolution to 4.4 km compared with the
coarser 17.6 m resolution in V22 and streamlining the format and content,
the V23 product has added geolocation information, pixel-level uncertainty
estimates, and improved cloud screening. MISR data can be obtained from the
NASA Langley Research Center Atmospheric Science Data Center at https://eosweb.larc.nasa.gov/project/misr/misr_table (last access: 11 October 2019). The
version number for the V23 level 2 aerosol product is F13_0023. The level 3 (gridded) aerosol product is still reported at
0.5∘×0.5∘ spatial resolution with results aggregated
from the higher-resolution level 2 data. The format and content at level 3
have also been updated to reflect the changes made at level 2. The level 3
product associated with the V23 level 2 product version is designated as
F15_0032. Both the level 2 and level 3 products are now
provided in NetCDF format.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
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