Aerosol components derived from global AERONET measurements by GRASP: A new value-added aerosol component global dataset and its application

Thumbnail Image

Files

bamsBAMSD230260.1.pdf (4.62 MB)

Links to Files

https://journals.ametsoc.org/view/journals/bams/aop/BAMS-D-23-0260.1/BAMS-D-23-0260.1.xml

Permanent Link

https://doi.org/10.1175/BAMS-D-23-0260.1
 http://hdl.handle.net/11603/36318

Collections

UMBC Faculty Collection
UMBC GESTAR II

Author/Creator

Author/Creator ORCID

Date

2024-08-29

Type of Work

journal articles
postprints
Text

Department

Program

Citation of Original Publication

Zhang, Xindan, Lei Li, Huizheng Che, Oleg Dubovik, Yevgeny Derimian, Brent Holben, Pawan Gupta, et al. “Aerosol Components Derived from Global AERONET Measurements by GRASP: A New Value-Added Aerosol Component Global Dataset and Its Application,” Bulletin of the American Meteorological Society, August 29, 2024. https://doi.org/10.1175/BAMS-D-23-0260.1.

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

Abstract

Aerosols affect the Earth’s climate both directly and indirectly, which is the largest uncertainty in the assessment of radiative forcings affecting anthropogenic climate change. The standard AErosol RObotic NETwork (AERONET) aerosol products have been widely used for more than thirty years. Currently, there is strong community interest in the possibility of determining aerosol composition directly from remote sensing observations. This work presents the results of applying such a recently developed approach by Li et al. (2019) to extended data sets of the directional sky radiances and spectral aerosol optical depth (AOD) measured by AERONET for the retrievals of aerosol components. First, the validation of aerosol optical properties retrieved by this component approach with AERONET standard products shows good agreement. Then, spatio-temporal variations of obtained aerosol component concentration are characterized globally, especially the absorbing aerosol species (black carbon, brown carbon and iron oxides) and scattering aerosol species (organic carbon, quartz, and inorganic salts). Finally, we compared the black carbon (BC) and dust column concentration retrievals to the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) products in several regions of interest (Amazon zone, Indo-China Peninsula, North India, Southern Africa, Sub-Sahel, Gobi Desert, Middle East, Sahara Desert, Taklamakan Desert) for new insights on the quantitative assessment of MERRA-2 aerosol composition products (R = 0.60 ~ 0.85 for BC; R = 0.75 ~ 0.90 for dust). The new value-added and long-term aerosol composition product globally is available at https://doi.org/10.6084/m9.figshare.25415239.v1, which provide important measurements for the improvement and optimization of aerosol modelling to enhanced estimate the aerosol radiative forcing.