GRASP-OPEN Home

Platform for GRASP open source code
Get public access to the code, documentation and user assistance

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.

GET STARTED

Stay tuned following our Twitter:

GRASP OPENFollow

GRASP OPEN @GraspOpen·

5 Apr

We are happy to announce the release of S5p/TROPOMI GRASP aerosol and surface data products in the framework of ESA S5p+Innovation AOD/BRDF project. https://www.grasp-open.com/products/tropomi-data-release/

Reply on Twitter 1511268443437383680 Retweet on Twitter 15112684434373836803 Like on Twitter 15112684434373836801 Twitter 1511268443437383680

GRASP OPEN @GraspOpen·

24 Jan

Within another interesting collaboration with @EUMETSAT, GRASP algorithm has been adapted to retrieve OLCI/Sentinel-3A aerosol and surface products. Check our website to access the data and get more info: https://www.grasp-open.com/products/olci-data-release/

Reply on Twitter 1485543918863372290 Retweet on Twitter 14855439188633722902 Like on Twitter 14855439188633722907 Twitter 1485543918863372290

GRASP OPEN @GraspOpen·

22 Nov

We are very happy and proud of the welcome in the LIDAR community. We have seen extensive use of GRASP at @ELC2020granada at #ELC2021 synergies session!

Reply on Twitter 1462800654108348426 Retweet on Twitter 1462800654108348426 Like on Twitter 14628006541083484263 Twitter 1462800654108348426

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)