Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

Project Announcements

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New MISR Version 23 Aerosol Product Publication

Area Affected
Date(s)
Thursday, October 10, 2019

The NASA Jet Propulsion Laboratory (JPL) Multi-angle Imaging SpectroRadiometer (MISR) project and the NASA Langley Atmospheric Science Data Center (ASDC) announce that a new publication describing the latest versions of the MISR Level 2 (L2) Aerosol Product and the Level 3 (L3) Component Global Aerosol Product is now available for discussion in the journal Atmospheric Measurement Techniques.

 

The publication describes the heritage of the MISR aerosol products, the motivations for the new product version, major changes to the underlying algorithms and to the data products themselves, and initial results of evaluations of the new version. It also provides information of interest to users of both the previous and current MISR aerosol product versions, such as mappings of previous to current parameter and fieldnames. The discussion paper is accessible at https://doi.org/10.5194/amt-2019-340. Interested parties can post comments until November 26, 2019.

 

The new MISR L2 Aerosol Product contains per-orbit data fields with information on atmospheric aerosols, including aerosol optical depth, single scattering albedo, and Angstrom Exponent, reported on a 4.4 km horizontal grid, which represents a sixteen-fold increase in the spatial resolution relative to the previous version of the product. The new MISR L2 Land Surface Product contains per-orbit data fields for clear-sky land scenes including atmospherically corrected surface reflectance, leaf area index, and fractional absorbed photosynthetically active radiation, reported on a 1.1 km horizontal grid, as in the previous version. Both products are provided in NetCDF-4 format, which is compatible with HDF5, with significant formatting changes designed to make the products easier to use.

 

The MISR L3 products report the daily, monthly, and seasonal averages of fields from the corresponding MISR L2 data products at 0.5° resolution on a regular latitude-longitude grid. These products are also provided in NetCDF-4 format, and include formatting changes to the data fields to make them consistent with the updated L2 Aerosol and Land Surface products.

 

The MISR product offerings are available via the Data Pool by FTP access to MISR, and by order through the online MISR Order and Customization Tool. Information about these products and details about product quality are available on the MISR Data and Information Table on each product page under "Product Quality Statement".

 

MISR INteractive eXplorer (MINX) V4.1 Release

Area Affected
Date(s)
Monday, July 22, 2019

The NASA Jet Propulsion Laboratory (JPL) Multi-angle Imaging SpectroRadiometer (MISR) project and the NASA Langley Atmospheric Science Data Center (ASDC) announce the release of Version 4.1 of the "MISR INteractive eXplorer" (MINX) software tool.

 

MINX can be downloaded at no charge from this website:  

https://github.com/nasa/MINX

 

See "Readme Notes v4.1" on the website for a description of its many new features and for instructions on installing MINX on Mac, Windows and Linux computers.

 

MINX is an interactive application written in IDL that functions both as a general-purpose tool to visualize MISR data and as a specialized tool to retrieve detailed aerosol plume heights and wind velocities from wildfire smoke, volcanic, and dust plumes.

 

MINX utilizes IDL's Virtual Machine software, which is now included in the MINX package. IDL (Interactive Data Language) is a product of Harris GeoSpatial Inc. 

 

MISR Where on Earth...? Mystery Image Quiz #31

Area Affected
Date(s)
Wednesday, July 10, 2019

Are you ready for a challenge? Become a geographical detective and solve the latest mystery quiz from NASA’s MISR (Multi-angle Imaging SpectroRadiometer) instrument onboard the Terra satellite. Prize submissions for perfect scores accepted until Wednesday, July 17, at 4:00 p.m. PDT. Happy sleuthing!

*Contest submissions are now closed

 

Image and Quiz Access

 

MISR Where on Earth…?

Area Affected
Date(s)
Wednesday, August 1, 2018

Are you ready for a challenge? Become a geographical detective and solve the latest mystery quiz from NASA’s MISR (Multi-angle Imaging SpectroRadiometer) instrument onboard the Terra satellite. Although contest submissions are no longer being accepted, you can still access the quiz questions to test your knowledge. Happy sleuthing!

 

Take the quiz here: http://climate.nasa.gov/quizzes/misr_quiz_30
Access past quizzes: https://eosweb.larc.nasa.gov/project/misr/gallery/mystery-gal
Access MISR Data and Information https://eosweb.larc.nasa.gov/project/misr/misr_table

New Versions of MISR Aerosol and Land Surface Products Available

Area Affected
Date(s)
Monday, February 12, 2018

The NASA Jet Propulsion Laboratory (JPL) Multi-angle Imaging SpectroRadiometer (MISR) project and the NASA Langley Atmospheric Science Data Center (ASDC) announce the release of new versions of the MISR Level 2 (L2) Aerosol Product, the MISR L2 Land Surface Product, and the Level 3 (L3) Component Global Aerosol and Land Surface Products.

 

The new MISR L2 Aerosol Product contains per-orbit data fields with information on atmospheric aerosols, including aerosol optical depth, single scattering albedo, and Angstrom Exponent, reported on a 4.4 km horizontal grid, which represents a sixteen-fold increase in the spatial resolution relative to the previous version of the product. The new MISR L2 Land Surface Product contains per-orbit data fields for clear-sky land scenes including atmospherically corrected surface reflectance, leaf area index, and fractional absorbed photosynthetically active radiation, reported on a 1.1 km horizontal grid, as in the previous version. Both products are provided in NetCDF-4 format, which is compatible with HDF5, with significant formatting changes designed to make the products easier to use.

 

The MISR L3 products report the daily, monthly, and seasonal averages of fields from the corresponding MISR L2 data products at 0.5° resolution on a regular latitude-longitude grid. These products are also provided in NetCDF-4 format, and include formatting changes to the data fields to make them consistent with the updated L2 Aerosol and Land Surface products.

 

Because the final processing for the L2 Aerosol and Land Surface Products relies on climatologies that are not available until the end of the current season, L2 and L3 products are initially produced using climatologies for the same month of the previous year and the same season of the previous year, which are designated FIRSTLOOK. FIRSTLOOK products are typically generated within twenty-four hours of the end of the observation period. Once updated climatologies become available, these products are reprocessed to the final version and the FIRSTLOOK designation is eliminated.

 

Final processing for seasonal 2015 through 2017 is complete for the new L2 and L3 products. FIRSTLOOK forward processing for the L2 product and L3 daily and monthly products are available for November 1, 2017 through present. Reprocessing of the entire MISR mission (spring 2000 – spring 2017) for the L2 and L3 products is underway. The MISR product offerings are available via the Data Pool by FTP access to MISR, and by order through the online MISR Order and Customization Tool.

 

Information about these products and details about product quality are available on the MISR Data and Information Table on each product page under "Product Quality Statement".

Information for MISR-Versioning-V23

 

MISR Where on Earth…?

Area Affected
Date(s)
Wednesday, June 21, 2017

Are you ready for a challenge? Become a geographical detective and solve the latest mystery quiz from NASA’s MISR (Multi-angle Imaging SpectroRadiometer) instrument onboard the Terra satellite. Prize submissions for perfect scores accepted until Wednesday, June 28, at 4:00 p.m. PDT. Happy sleuthing!

 

Take the quiz here: http://climate.nasa.gov/quizzes/misr_quiz_29

Access MISR Data and Information https://eosweb.larc.nasa.gov/project/misr/misr_table

MISR Where on Earth…?

Area Affected
Date(s)
Wednesday, November 16, 2016

Are you ready for a challenge? Become a geographical detective and solve the latest mystery quiz from NASA’s MISR (Multi-angle Imaging SpectroRadiometer) instrument onboard the Terra satellite. Prize submissions for perfect scores accepted until Wednesday, November 23, at 4:00 p.m. PST. Happy sleuthing!

 

Take the quiz here: http://climate.nasa.gov/quizzes/misr_quiz_28

Access MISR Data and Information https://eosweb.larc.nasa.gov/project/misr/misr_table

Hurricane Matthew over Haiti seen by NASA's MISR

Area Affected
Date(s)
Tuesday, October 4, 2016

On the morning of October 4, 2016, Hurricane Matthew passed over the island nation of Haiti. A Category 4 storm, it made landfall around 7 a.m. local time (5 a.m. PDT/8 a.m. EDT) with sustained winds over 145 mph. This is the strongest hurricane to hit Haiti in over 50 years.   Read the full article.

 

These data were acquired during Terra orbit 89345. Other MISR data are available through the NASA Langley Research Center.
For more MISR information, visit https://eosweb.larc.nasa.gov/project/misr/misr_table.

 

MISR Near Real Time Products Available

Area Affected
Date(s)
Wednesday, September 3, 2014

The NASA Jet Propulsion Laboratory (JPL) Multi-angle Imaging SpectroRadiometer (MISR) project and the NASA Langley Atmospheric Science Data Center (ASDC) announce the release of new Near Real Time (NRT) versions of the MISR L1B2 Georectified Radiance Product (GRP) containing both Ellipsoid- and Terrain-projected radiance information, and the L2 Cloud Motion Vector (CMV) product containing height-resolved atmospheric winds. These are now available to accommodate rapid response applications, especially numerical weather prediction (NWP).

 

Each MISR NRT data product is available within three hours of satellite over flight as one data file per session, where a session consists of a 10 to 50 minute observation interval. The file names will include the unique start time of each session, differentiating them from standard MISR product files. The NRT versions of MISR data products employ the same retrieval algorithms as standard production, yielding equivalent science content, though not necessarily equivalent values per retrieval.

 

The MISR NRT L1B2 data products contain the global mode radiances for an entire session geometrically corrected and projected to a Space-Oblique Mercator (SOM) map grid with a swath width of about 400 km. The Ellipsoid-projected and Terrain-projected top-of-atmosphere (TOA) radiance products provide measurements respectively resampled onto the WGS84 reference ellipsoid and onto the topography of a digital elevation model. Spatial sampling is 275 m in all bands of MISR’s nadir camera, and in the red band of the other eight (off-nadir) cameras. The remaining channels are sampled at 1.1 km spacing.

 

The MISR CMV wind retrieval product provides a high quality subset of cloud motions representing the wind field, gridded at 17.6 km horizontal resolution.  The geometric height of each cloud motion is simultaneously resolved with 300 m precision. This product is available in HDFEOS and BUFR format. For more information, please consult the MISR CMV DPS and Documentation for the BUFR Format.

 

The MISR NRT product offerings, beginning from September 1, 2014 are available via the ASDC by subscription, from the Data Pool by FTP access to MISR_NRT, and by order through the online NASA Reverb Earth Science Discovery Tool.

 

Information about these products and details about product quality will soon be available on the MISR Data and Information Table under "Product Quality Statement".

 

New MISR Toolkit Version 1.4.1 Available

Area Affected
Date(s)
Wednesday, May 7, 2014

New Version 1.4.1 of the MISR Toolkit (MTK) is now available from the The Open Channel Foundation.  The MTK is a simplified programming interface built upon HDF-EOS to access MISR Level 1B2, Level 2, and ancillary data products. It also handles the MISR conventional format. The interface consists of a collection of routines that can be used as command line tools or in the development of larger software tools and applications.

 

Features of the MTK include specifying regions to read based on geographic bounding box, geographic location and extent, or the MISR path and block range. Mapping between path, orbit, block, time range, geographic location, and automatically stitching, unpacking and unscaling MISR data. Read about additional features and information on the MISR Toolkit page.

 

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