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

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at the NASA Langley Research Center

AirMSPI Data and Information

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AirMSPI Data and Information

 

Airborne Multi-angle Spectro Polarimetric Imager (AirMSPI) is an airborne prototype instrument similar to that of the future satellite-borne MSPI instrument for obtaining multi-angle polarization imagery. AirMSPI flies on the NASA-owned ER-2 aircraft. The instrument was built for NASA by the Jet Propulsion Laboratory in Pasadena, California.

 

AirMSPI is an 8-band (355, 380, 445, 470, 555, 660, 865, 935 nm) pushbroom camera, measuring polarization in the 470, 660, and 865 nm bands, mounted on a gimbal to acquire multiangular observations over a ±67° along-track range. Two principal observing modes are employed: step-and-stare, in which 11 km x 11 km targets are observed at a discrete set of view angles with a spatial resolution of ~10 m; and continuous sweep, in which the camera slews back and forth along the flight track between ±67° to acquire wide area coverage (11 km swath at nadir, target length 108 km) with ~25 m spatial resolution. Step-and-stare provides more angles, but continuous sweep gives greater coverage. Multiple observing modes can be programmed into the instrument and activated under cockpit control. Multiangle radiance and polarization imagery from AirMSPI will (a) provide 3-D scene context where clouds and aerosol plumes are present, plus constraints on radiometric closure, particularly over heterogeneous scenes where 3-D radiative transfer may dominate, and (b) enable retrieval of aerosol and cloud macrophysical properties (distribution, height), microphysical properties (size distribution, single scattering albedo, shape), and optical depth.

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI PODEX Ellipsoid Data V005

Variable

10/25 meters per pixel

01/14/2013 - 02/15/2013

AirMSPI PODEX Terrain Data V005

Variable

10/25 meters per pixel

01/14/2013 - 02/15/2013

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI SEAC4RS Ellipsoid Data V005

Variable

10/25 meters per pixel

08/01/2013 - 09/23/2013

AirMSPI SEAC4RS Terrain Data V005

Variable

10/25 meters per pixel

08/01/2013 - 09/23/2013

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI CALWater-2 Ellipsoid Data V006

Variable

10/25 meters per pixel

01/20/2015 - 02/24/2015

AirMSPI CALWater-2 Terrain Data V006

Variable

10/25 meters per pixel

01/20/2015 - 02/24/2015

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI RADEX Ellipsoid Data V006

Variable

Swath

11/10/2015 - 12/13/2015

AirMSPI RADEX Terrain Data V006

Variable

Swath

11/10/2015 - 12/13/2015

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI SPEX-PR Ellipsoid Data V006

Variable

10/25 meters per pixel

02/02/2016 - 02/09/2016

AirMSPI SPEX-PR Terrain Data V006

Variable

Swath

02/02/2016 - 02/09/2016

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI ImPACT-PM Ellipsoid Data V006

Variable

10/25 meters per pixel

07/05/2016 - 07/08/2016

AirMSPI ImPACT-PM Terrain Data V006

Variable

10/25 meters per pixel

07/05/2016 - 07/08/2016

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI ORACLES Cloud Droplet Data V001

Variable

25 meters per pixel

07/28/2016 - 10/06/2016

AirMSPI ORACLES Ellipsoid Data V006

Variable

10/25 meters per pixel

07/28/2016 - 10/06/2016

AirMSPI ORACLES Terrain Data V006

Variable

10/25 meters per pixel

07/28/2016 - 10/06/2016

Product Temporal Resolution Spatial Resolution Temporal Coverage
AirMSPI ACEPOL Ellipsoid Data V006

Variable

10/25 meters per pixel

10/19/2017 - 11/09/2017

AirMSPI ACEPOL Terrain Data V006

Variable

10/25 meters per pixel

10/19/2017 - 11/09/2017

GroundMSPI ACEPOL Radiance Data V009

Variable

10/25 meters per pixel

10/25/2017 - 11/07/2017

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