Titre :

Impact of mineral dust on shortwave and longwave radiation: evaluation of different vertically resolved parameterizations in 1-d radiative transfer computations

Auteur(s) :

Jose Granados-,munoz Maria [Auteur]
Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona] [UPC]
Sicard, Michael [Auteur]
Ciències i Tecnologies de l’Espai - Centre de Recerca de l’Aeronàutica i de l’Espai [CTE-CRAE/IEEC]
Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona] [UPC]
Roman, Roberto [Auteur]
Universidad de Valladolid [Valladolid] [UVa]
Antonio Benave,nt-Oltra Jose [Auteur]
Universidad de Granada = University of Granada [UGR]
Instituto Interuniversitario de Investigacion del Sistema Tierra en Andalucia [IISTA-CEAMA]
Barragan, Ruben [Auteur]
Ciències i Tecnologies de l’Espai - Centre de Recerca de l’Aeronàutica i de l’Espai [CTE-CRAE/IEEC]
Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona] [UPC]
Brogniez, Gerard [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Denjean, Cyrielle [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Centre national de recherches météorologiques [CNRM]
Mallet, Marc [Auteur]
Centre national de recherches météorologiques [CNRM]
Formenti, Paola [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Torres, Benjamin [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Alados-Arboledas, Lucas [Auteur]
Instituto Interuniversitario de Investigacion del Sistema Tierra en Andalucia [IISTA-CEAMA]
Department Applied Physics [Granada]

Titre de la revue :

Atmospheric Chemistry and Physics

Nom court de la revue :

Atmos. Chem. Phys.

Numéro :

19

Date de publication :

2019-01-14

ISSN :

1680-7316

Discipline(s) HAL :

Physique [physics]

Résumé en anglais : [en]

Aerosol radiative properties are investigated in southeastern Spain during a dust event on 16-17 June 2013 in the framework of the ChArMEx/ADRIMED (Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative Impact ...
Lire la suite >Aerosol radiative properties are investigated in southeastern Spain during a dust event on 16-17 June 2013 in the framework of the ChArMEx/ADRIMED (Chemistry-Aerosol Mediterranean Experiment/Aerosol Direct Radiative Impact on the regional climate in the MEDiterranean region) campaign. Particle optical and microphysical properties from ground-based sun/sky photometer and lidar measurements, as well as in situ measurements on board the SAFIRE ATR 42 French research aircraft, are used to create a set of different levels of input parameterizations, which feed the 1-D radiative transfer model (RTM) GAME (Global Atmospheric ModEl). We consider three datasets: (1) a first parameteriza-tion based on the retrievals by an advanced aerosol inversion code (GRASP; Generalized Retrieval of Aerosol and Surface Properties) applied to combined photometer and lidar data, (2) a parameterization based on the photometer colum-nar optical properties and vertically resolved lidar retrievals with the two-component Klett-Fernald algorithm, and (3) a parameterization based on vertically resolved optical and mi-crophysical aerosol properties measured in situ by the aircraft instrumentation. Once retrieved, the outputs of the RTM in terms of both shortwave and longwave radiative fluxes are compared against ground and in situ airborne measurements. In addition, the outputs of the model in terms of the aerosol direct radiative effect are discussed with respect to the different input parameterizations. Results show that calculated atmospheric radiative fluxes differ no more than 7 % from the measured ones. The three parameterization datasets produce a cooling effect due to mineral dust both at the surface and the top of the atmosphere. Aerosol radiative effects with differences of up to 10 W m −2 in the shortwave spectral range (mostly due to differences in the aerosol optical depth) and 2 W m −2 for the longwave spectral range (mainly due to differences in the aerosol optical depth but also to the coarse mode radius used to calculate the radiative properties) are obtained when comparing the three parameterizations. The study reveals the complexity of parameterizing 1-D RTMs as sizing and characterizing the optical properties of min-Published by Copernicus Publications on behalf of the European Geosciences Union. 524 M. J. Granados-Muñoz et al.: Impact of mineral dust on shortwave and longwave radiation eral dust is challenging. The use of advanced remote sensing data and processing, in combination with closure studies on the optical and microphysical properties from in situ aircraft measurements when available, is recommended.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Université de Lille

Collections :

• Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Date de dépôt :

2024-01-30T11:45:40Z
2024-02-22T12:21:22Z
2024-04-22T09:57:30Z