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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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.

 

MISR Level 3 Cloud Motion Vector

Area Affected

Level 3

Date(s)
Wednesday, November 7, 2012

A new version, F02_0002, of the MISR L3 CMV (Cloud Motion Vector) data product is now available. This new release provides finer resolution (17.6 km versus 70.4 km) and wider coverage. These enhancements are the result of reorganizing motion vector information present in the recent Level 2 Cloud product as opposed to the previously used Level 2 Stereo product.

 

The MISR Cloud Motion Vector product provides conveniently organized, readily accessible, high quality retrievals of cloud motion due to advection. The CMV product does not contain any new retrievals of cloud motion, but instead reorganizes the information already available in the MISR L2 Cloud product. The CMV product notably excludes retrievals from that product whose orbit or retrieval parameters suggest poor quality and whose altitude and speed are unlikely to be associated with true cloud advection. These exclusions allow CMV product users to more readily employ MISR CMV data as a source of proxy wind observations. They also allow the retrievals to be conveniently packaged and distributed as monthly, seasonal, and annual NetCDF files of manageable size.

 

Version F02_0002 CMV products for the full mission time period of March 2000 - September 2012 are now available for ordering.

 

Information about these products and details about product quality can be found on the MISR Data and Information Table under "New Data Product Quality". The data set can be accessed at the MISR Level 3 Products page.

 

New MISR Data

Area Affected

Level 2 Cloud

Date(s)
Thursday, July 19, 2012

The NASA Langley (LaRC) Atmospheric Science Data Center (ASDC) completed processing of the new MISR Level 2 Cloud product for the entire Terra mission time period of March 1, 2000 to July 17, 2012. These MISR data products are publicly available from the NASA LaRC ASDC. The new MISR Level 2 Cloud product contains height-resolved, cloud motion vectors at 17.6 km resolution; cloud top heights at 1.1 km resolution; and cross-track cloud motion components at 1.1 km resolution. Additional parameters include cloud masks and quality indicators. See the quality statement for more details.

 

New MISR Cloud Data

Area Affected

Level 2 Cloud

Date(s)
Tuesday, May 8, 2012

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 a new science data product, the MISR Level 2 Cloud product. The new Level 2 Cloud product is a substantial update of, and improvement to, the existing MISR Level 2 Stereo product.

 

The new Level 2 Cloud product contains height-resolved, cloud motion vectors at 17.6 km resolution; cloud top heights at 1.1 km resolution; and cross-track cloud motion components at 1.1 km resolution. Additional parameters include cloud masks and quality indicators. Cloud motion vectors are provided for 70% of clouds observed by MISR with vector RMS difference from atmospheric motion vectors from other sources ranging from 3.3 m/s to 6.8 m/s. Cloud top heights are provided for 80% of clouds with RMS differences of less than 1 km (the same as for the existing Level 2 Stereo product). See the quality statement for more details.

 

At present, the new Level 2 Cloud product is available for the period of December 2006 to December 2007, inclusive. Data products for the entire mission period will be produced beginning with 2012 and proceeding backward in time to the start of the mission in March 2000. The complete mission dataset is expected to be available by the end of summer 2012.

 

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