Titre :

Retrievals of fine mode light-absorbing carbonaceous aerosols from POLDER/PARASOL observations over East and South Asia

Auteur(s) :

Li, Lei [Auteur]
State Key Laboratory of Severe Weather [LASW]
Che, Huizheng [Auteur]
State Key Laboratory of Severe Weather [LASW]
Derimian, Yevgeny [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Doubovik, Oleg [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Schuster, Gregory L. [Auteur]
NASA Langley Research Center [Hampton] [LaRC]
Chen, Cheng [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Li, Qiuyue [Auteur]
Beijing Meteorological Bureau
Wang, Yaqiang [Auteur]
State Key Laboratory of Severe Weather [LASW]
Guo, Bin [Auteur]
State Key Laboratory of Severe Weather [LASW]
Zhang, Xiaoye [Auteur]
State Key Laboratory of Severe Weather [LASW]

Titre de la revue :

Remote Sensing of Environment

Nom court de la revue :

Remote Sens. Environ.

Numéro :

247

Pagination :

-

Date de publication :

2021-03-10

ISSN :

0034-4257

Mot(s)-clé(s) en anglais :

Light-absorbing aerosol
Black carbon
Brown carbon
Satellite remote sensing
POLDER/PARASOL
GRASP

Discipline(s) HAL :

Planète et Univers [physics]/Océan, Atmosphère

Résumé en anglais : [en]

A new aerosol component approach that infers aerosol species fractions from satellite observations was developed and incorporated by Li et al. (2019) into Generalized Retrieval of Aerosol and Surface Properties (GRASP) ...
Lire la suite >A new aerosol component approach that infers aerosol species fractions from satellite observations was developed and incorporated by Li et al. (2019) into Generalized Retrieval of Aerosol and Surface Properties (GRASP) algorithm. In the current work we employ this aerosol component approach for derivation and analysis of temporal and spatial characteristics of black and brown carbon (BC and BrC) concentrations in East and South Asia using POLDER/PARASOL satellite observations during 2005–2013. The inter-comparison of the satellite retrieved and in situ measured BC in China shows a reasonably good agreement for both monthly averaged and daily values. The distribution of light-absorbing carbon (BC and BrC) shows a significant temporal variation cycle with increases matching the months known for strong biomass burning or fossil fuels combustion emissions. The main concentrations of BC are found near the fire or anthropogenic emission regions, while concentrations of BrC are predominantly distanced from the emission sources. Seasonal means of BC/(BC + BrC) ratio in East and South Asia are also presented. High ratios (above 0.5) in Northeast India and North China during December, January, and February can be attributed to fossil fuels combustion and anthropogenic emissions. Medium ratios (around 0.2–0.3) over the Indo-China Peninsula and Northeast China during March, April, and May are associated with the biomass burning (e.g., forest fires, agriculture waste burning). The provided observationally-based retrievals of BC, BrC, and BC/(BC + BrC) are believed to be of high importance for constraining the aerosol modeling and reducing the uncertainties of the model estimations.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 :

2024-01-16T22:09:04Z
2024-02-12T07:55:06Z