Aerosol Parameter from MISR

MISR AOD Level 3 Component Aerosol Product. Copyright: UHH/CEN/AJB

Topics

Access

RESTRICTED: This link to the data set is only available for a restricted user group. The data set is only accessible in CEN/MPI net or accessible from external nets with a customer account. Please contact ICDC if you would like to access this data from outside the network.

MISR Aerosol via OPeNDAP
MISR Aerosol via Filesystem: /data/icdc/atmosphere/misr_aerosol

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Description

MISR is the acronym for Multi-angle Imaging Spectroradiometer. This sensor, equipped with four spectral bands in the visible / near-infrared wavelength range: 0.446, 0.557, 0.672, and 0.866 µm, operates from aboard the EOS-TERRA satellite since 2000. MISR acquires reflectances using nine cameras; one is looking nadir, while of the remaining eight cameras, four are looking into and four against the flight direction of the satellite at fixed view angles with respect to the Earth surface: 26.1, 45.6, 60.0, and 70.5 degrees. By means of its spectral resolution and permanently observing the atmosphere at the given different view angles, a large number of different aerosol and cloud parameters can be retrieved.

A list of the aerosol parameters which ICDC offers is this parameter list (txt-Format).

More information about the data sets can be found on the web pages of the Langley Atmospheric Science Data Center, here: https://asdc.larc.nasa.gov/project/MISR , and in the references.

ICDC offers the monthly globally gridded product at 0.5 degree grid resolution; this gridded product is based on the 2017 re-processing (version v23) and is based on the level-2 product with 4.4 km resolution obtained with the same re-processing.

Last update of this data set at ICDC: May 19, 2022.

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Parameters

Selection of the MISR aerosol parameters (complete parameter list in the description)
Datentyp	Kommentar
Aerosol optical depth (AOD)	for different AOD levels
AOD - small mode	as above for small particles
AOD - medium mode	as 1st above for medium-size particles
AOD - large mode	as 1st above for large particles
AOD - non spherical	as 1st above for non-spherical particles
AOD - per band	as 1st above separately for the four wavelength bands
Angström exponent	as 1st above, using 550 nm and 860 nm
Absorbing optical depth (OD)	as 1st above
Absorbing OD per band	as above separately for the four wavelength bands
Retrievalkoeffizienten

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Coverage, spatial and temporal resolution

Period and temporal resolution:

2000-03-01 bis 2021-11-30
Monthly

Coverage and spatial resolution:

Global
Spatial resolution: 0.5° x 0.5°, cartesian grid
Geographic longitude: -179.75°E bis 179.75°E
Geographic latitude: -89.75°N bis 89.75°N
Dimension: 720 Spalten x 360 Zeilen
Altitude: following terrain

Format:

NetCDF

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Data quality

Most of the MISR data offered here contain as a measure of uncertainty on the standard deviation of all level-2 grid cells used for the computation of the level-3 product. In addition, there are data layers for all parameters providing the count of valid level-2 product values used in the level-3 product in the respective grid cell.

We refer to the documents listed in the references for further information regarding evaluation activities of - mostly - the level-2 products; the qualtiy of these determines the level-3 product quality..

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Contact

Michael J. Garay
MISR - Principal Investigator
NASA / JPL
email: michael.j.garay (at) jpl.nasa.gov

NASA Langley ASDC User Services
email: support-asdc (at) earthdata.nasa.gov

Stefan Kern
ICDC / CEN / Universität Hamburg
email: stefan.kern (at) uni-hamburg.de

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References

MISR overview page for ATBDs: https://eospso.gsfc.nasa.gov/atbd-category/45
MISR Level-2 aerosol retrieval ATBD (pdf, nicht barrierefrei)
Diner, D. J., et al., Multi-Angle Imaging Spectroradiometer (MISR) - Instrument Description and Experiment Overview, IEEE Trans. Geosci. Rem. Sens., 36(4), 1072-1087, 1998. (pdf, nicht barrierefrei)
Garay, M. J., et al., Development and assessment if a higher-spatial-resolution (4.4km) MISR aerosol optical depth product using AERONET-DRAGON data. Atmos. Chem. Phys., 17, 5095-5106, 2017, https://doi.org/10.5194/acp-17-5095-2017.
Witek, M. L., et al., Oceanic aerosol loading derived from MISR's 4.4 km (V23) aerosol product. J. Geophys. Res.-Atmospheres, 124, 2019, https://doi.org/10.1029/2019JD031065.
Garay, M. J., et al., Introducing the 4.4km spatial resolution Multi-Angle Imaging SpectroRadiometer (MISR) aerosol product. Atmos. Meas. Tech., 13, 593-628, 2020, https://doi.org/10.5194/amt-13-593-2020.

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Data citation

Please cite the data as follows:

Garay, M. J., et al., (2017) MISR level 3, version 4 (reprocessing v23, 2017) monthly globally gridded aerorol parameters MIL3MAEN_L3.004 (https://doi.org/10.5067/Terra/MISR/MIL3MAEN_L3.004 ) were obtained from the NASA Langley Research Center Atmospheric Science Data Center [last access date: May 12, 2022] and equipped with a continuous time axis and redistributed in netCDF file format by ICDC, CEN, University of Hamburg.

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