Funded by:EU, Horizon 2020
Duration:Mar 2018 - Feb 2022

Project Description

Development of GRASP radiative transfer code for the retrieval of aerosol microphysics verticalprofiles from space measurements and its impact in ACE mission.

Funded by: European Commission, H2020-MSCA-RISE-2017 (Marie Curie RISE)
Participant institutions: Universidad de Valladolid (UVa), Universidad de Granada (UGR), Université de Lille-1, Goddard Space Flight Center, University System of Maryland, GRASP-SAS, Russian Academy of Sciences, University of Berlin.
Principal investigator:  C. Toledano (UVa),  D. Pérez-Ramírez (UGR-coordinator)

This project deals with reducing the uncertainties associated with the knowledge of aerosol microphysical vertical profiles worldwide through the use of new space-borne measurements. This objective links with the goal of the last IPCC 2013 to reduce uncertainties in aerosol direct effects, particularly in the knowing of absorption profiles. The approach we plan to develop is the development and applicability of the Generalized Retrieval of Atmosphere and Surface Properties (GRASP) for new space borne systems. GRASP has been already applied successfully to the POLDER/PARASOL system providing column-integrated aerosol microphysics and absorption. However, the new LIDAR space-borne sensors open new possibilities. To that end, we plan to study the details in constraints of the current techniques for the retrieval of aerosol microphysics from multi-wavelength lidar alone (known as the 3b+2a configuration), and will make evaluation studies versus in-situ instruments from large field campaigns such as DISCOVER-AQ and SEACR4S from NASA or SHADOW from the University of Lille. However, lidar measurements are difficult and usually presents low signal-to-noise ratio, particularly during daytime. We plan here to develop a joint inversion that uses combine measurements of lidar and polarimetric spaceborne systems. Such approach is the core of the upcoming Aerosol-Clouds-Ecosystems (ACE) NASA mission.