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GRASP is a highly accurate aerosol retrieval algorithm that processes properties of aerosol- and land-surface-reflectance. It infers nearly 50 aerosol and surface parameters including particle size distribution, the spectral index of refraction, the degree of sphericity and absorption. The algorithm is designed for the enhanced characterization of aerosol properties from spectral, multiangular polarimetric remote sensing observations. GRASP works under different conditions, including bright surfaces such as deserts, where the reflectance overwhelms the signal of aerosols. GRASP is highly versatile and allows input from a wide variety of satellite and surface measurements.

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GraspOpenGRASP OPEN@GraspOpen·
21 Oct

GRASP is a universal algorithm and can be applied to various instruments. Recently it was used for AirHARP data retrieval by scientific group at the University of Maryland and NASA Langley. Check out their new paper: https://amt.copernicus.org/articles/13/5207/2020/

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GraspOpenGRASP OPEN@GraspOpen·
5 Oct

A new publication with PARASOL/GRASP results: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020EF001520

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GraspOpenGRASP OPEN@GraspOpen·
9 Sep

Have you obtained the results using GRASP and published a paper? Please send it to us via a form on GRASP-Open website! Be part of the community and give more visibility to your publications!
https://www.grasp-open.com/publications/

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GRASP Code

Download the GRASP-code, install it and run it for a large number of different aerosol measurements. Signup for the latest version of GRASP-code: stable, fast and easy to use.

Code Documentation

Complete documentation about the code, API and features of GRASP.

GRASP is a highly accurate aerosol retrieval algorithm.

It processes properties of aerosol and land surface reflectance.

What is the GRASP Algorithm?

GRASP (Generalized Retrieval of Aerosol and Surface Properties) is the first unified algorithm to be developed for characterizing atmospheric properties gathered from a variety of remote sensing observations
(Dubovik, O. et al., 2014, GRASP: a versatile algorithm for characterizing the atmosphere, SPIE Newsroom. DOI: 10.1117/2.1201408.005558, doi: http://spie.org/x109993.xml)

What are Aerosols?

What are the sources of aerosols and what effects do they have?

Interested in GRASP Algorithm

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