This data set is only available for a restricted user group, please contact us if you want to access these data.
RESTRICTED only accessable in CEN/MPI net or via CliSAP login What does that mean?
Data access via file system: /data/icdc/atmosphere/misr_aerosol
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.
We list the aerosol parameters which we offer via ICDC in the parameter list.
More information about the data sets can be found on the web pages of the Langley Atmospheric Science Data Center, z. B.: 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.
We added this data set to ICDC's data holding on September 24, 2020.
|Type of data||Comment|
|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|
|The full description of the file content is given in the parameter list under descriptions|
Period and temporal resolution:
- 2000-03-01 to 2020-05-31
Coverage and spatial resolution:
- Spatial resolution: 0.5° x 0.5°, cartesian grid
- Geographic longitude: -179.75°E to 179.75°E
- Geographic latitude: -89.75°N to 89.75°N
- Dimension: 720 columns x 360 rows
- Altitude: following terrain
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..
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
ICDC / CEN / Universität Hamburg
email: stefan.kern (at) uni-hamburg.de
- MISR overview page for ATBDs: https://eospso.gsfc.nasa.gov/atbd-category/45
- MISR Level-2 aerosol retrieval ATBD
- 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.
- 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.
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: August 25, 2020] and equipped with a continuous time axis and redistributed in netCDF file format by ICDC (http://icdc.cen.uni-hamburg.de), CEN, University of Hamburg.