Titre :

Vertical assessment of the mineral dust optical and microphysical properties as retrieved from the synergy between polarized micro-pulse lidar and sun/sky photometer observations using GRASP code

Auteur(s) :

Lopez-Cayuela, María-Ángeles [Auteur]
Instituto Nacional de Técnica Aeroespacial [INTA]
Herreras Giralda, Marcos [Auteur]
Université de Lille
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Cordoba-Jabonero, Carmen [Auteur]
Instituto Nacional de Técnica Aeroespacial [INTA]
Lopatin, Anton [Auteur]
Université de Lille
Doubovik, Oleg [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Guerrero-Rascado, Juan Luis [Auteur]
Department Applied Physics [Granada]
Instituto Interuniversitario de Investigacion del Sistema Tierra en Andalucia [IISTA-CEAMA]

Titre de la revue :

Atmospheric Research

Nom court de la revue :

Atmos. Res.

Numéro :

264

Pagination :

-

Date de publication :

2021-10-28

ISSN :

0169-8095

Mot(s)-clé(s) en anglais :

Dust properties
Elastic lidar
GRASP
Sun
sky photometer

Discipline(s) HAL :

Planète et Univers [physics]/Océan, Atmosphère

Résumé en anglais : [en]

The potential of the synergetic use of both polarized Micro-Pulse Lidar (P-MPL) and Sun/sky photometer observations by using the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) code for retrieving dust ...
Lire la suite >The potential of the synergetic use of both polarized Micro-Pulse Lidar (P-MPL) and Sun/sky photometer observations by using the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) code for retrieving dust properties has been analysed in this work. Both the columnar and height-resolved variables have been evaluated in comparison, respectively, with AERONET data and vertical P-MPL-derived profiles of the dust optical and microphysical properties over a mid-latitude site. The linear regression analysis together with the mean fractional bias values and relative differences between datasets have been used as the statistical proxies for assessing the degree of agreement by examining 24 selected dust cases. Regarding columnar variables, the microphysical properties (both the particle volume concentration and effective radius) presented a high confidence level between GRASP and AERONET retrievals by taking into account all the proxies. In addition, the single scattering albedo and the real refractive index presented a good confidence level at all the wavelengths, as well, unlike the imaginary refractive index, which was confident at 440 nm only. By analysing the height-resolved properties of the total particle backscatter coefficient and the total volume concentration, the degree of agreement shows a high confidence between GRASP retrievals and P-MPL-derived variables, which were retrieved by using an alternative, well-validated, polarization-based methodology. Indeed, these results can be essential for application with no-polarized systems (e.g., ceilometers, lidars …). Overall, the synergy between P-MPL and Sun/sky photometer measurements regarding the usual co-location of both MPLNET and AERONET networks in combination with GRASP code represent an improved approach to derive the height-resolved optical and microphysical properties for mineral dust particles with a high degree of confidence.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS

Collections :

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

Date de dépôt :

2024-01-16T22:36:29Z
2024-02-08T13:58:04Z