GRASP retrievals in synergy with both polarized Micro-Pulse Lidar and Sun/Sky photometer measurements to derive optical and microphysical properties of aged smoke plumes

María Ángeles López Cayuela; Carmen Córdoba-Jabonero; Daniel Pérez-Ramírez; Milagros Herrera; Juan Luís Guerrero-Rascado

doi:10.1117/12.2600148

12 September 2021 GRASP retrievals in synergy with both polarized Micro-Pulse Lidar and Sun/Sky photometer measurements to derive optical and microphysical properties of aged smoke plumes

María Ángeles López Cayuela, Carmen Córdoba-Jabonero, Daniel Pérez-Ramírez, Milagros Herrera, Juan Luís Guerrero-Rascado

Author Affiliations +

Proceedings Volume 11859, Remote Sensing of Clouds and the Atmosphere XXVI; 118590L (2021) https://doi.org/10.1117/12.2600148
Event: SPIE Remote Sensing, 2021, Online Only

Abstract

This work focuses on combining polarized Micro-Pulse Lidar (P-MPL) and AERONET measurements in the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) code for the retrieval of optical and microphysical properties of aged smoke particles. In particular, a few smoke cases corresponding to an aged Canadian smoke plume observed at El Arenosillo/Huelva (Spain) during 7-8 September 2017 were selected. Both the GRASP-derived columnar and height-resolved optical and microphysical properties are compared with AERONET retrievals and vertical lidar-retrieved profiles, respectively. Linear regression analysis, mean fractional bias and relative differences between both datasets are the statistical proxies used for assessing the degree of agreement by comparing the vertical profiles. The inter-comparison analysis of the columnar-integrated properties (e.g. total volume concentration, effective radius, particle volume size distribution, single scattering albedo and complex refractive index) indicates that GRASP retrievals are consistent with those provided by AERONET for the smoke event examined in this study. By analysing the height - resolved properties (e.g. the total particle backscatter coefficient and the total volume concentration) , the degree of the agreement also shows high confidence between GRASP retrievals and P-MPL-derived variables, which were retrieved by using an alternative and well-validated polarization-based methodology.

Conference Presentation

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María Ángeles López Cayuela, Carmen Córdoba-Jabonero, Daniel Pérez-Ramírez, Milagros Herrera, and Juan Luís Guerrero-Rascado "GRASP retrievals in synergy with both polarized Micro-Pulse Lidar and Sun/Sky photometer measurements to derive optical and microphysical properties of aged smoke plumes", Proc. SPIE 11859, Remote Sensing of Clouds and the Atmosphere XXVI, 118590L (12 September 2021); https://doi.org/10.1117/12.2600148

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