Estimation of aerosol direct radiative forcing in Lecce during the 2013 ADRIMED campaign

Ruben Barragan; Salvatore Romano; Michaël Sicard; Pasquale Burlizzi; Maria-Rita Perrone; Adolfo Comeron

doi:10.1117/12.2194095

16 October 2015 Estimation of aerosol direct radiative forcing in Lecce during the 2013 ADRIMED campaign

Ruben Barragan, Salvatore Romano, Michaël Sicard, Pasquale Burlizzi, Maria-Rita Perrone, Adolfo Comeron

Proceedings Volume 9640, Remote Sensing of Clouds and the Atmosphere XX; 96400J (2015) https://doi.org/10.1117/12.2194095
Event: SPIE Remote Sensing, 2015, Toulouse, France

Abstract

In the framework of the ChArMEx (Chemistry-Aerosol Mediterranean Experiment, http://charmex.lsce.ipsl.fr/) initiative, a field campaign took place in the western Mediterranean Basin between 10 June and 5 July 2013 within the ADRIMED (Aerosol Direct Radiative Impact on the regional climate in the MEDiterranean region) project. The scientific objectives of ADRIMED are the characterization of the typical “Mediterranean aerosol” and its direct radiative forcing (column closure and regional scale). This work is focused on the multi-intrusion Saharan dust transport period of moderate intensity that occurred over the western and central Mediterranean Basin during the period 14 – 27 June. The dust plumes were detected by the EARLINET/ACTRIS (European Aerosol Research Lidar Network / Aerosols, Clouds, and Trace gases Research InfraStructure Network, http://www.actris.net/) lidar stations of Barcelona (16 and 17 June) and Lecce (22 June). First, two well-known and robust radiative transfer models, parametrized by lidar profiles for the aerosol vertical distribution, are validated both in the shortwave and longwave spectral range 1) at the surface with down- and up-ward flux measurements from radiometers and 2) at the top of the atmosphere with upward flux measurements from the CERES (Clouds and the Earth’s Radiant Energy System) radiometers on board the AQUA and TERRA satellites. The differences between models and their limitations are discussed. The instantaneous and clear-sky direct radiative forcing of mineral dust is then estimated using lidar data for parametrizing the particle vertical distribution at Lecce. The difference between the obtained forcings is discussed in regard to the mineralogy and vertical structure of the dust plume.

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Ruben Barragan, Salvatore Romano, Michaël Sicard, Pasquale Burlizzi, Maria-Rita Perrone, and Adolfo Comeron "Estimation of aerosol direct radiative forcing in Lecce during the 2013 ADRIMED campaign", Proc. SPIE 9640, Remote Sensing of Clouds and the Atmosphere XX, 96400J (16 October 2015); https://doi.org/10.1117/12.2194095

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KEYWORDS

Aerosols

Atmospheric modeling

Atmospheric particles

LIDAR

Radiative transfer

Climatology

Clouds

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