Articles | Volume 24, issue 9
https://doi.org/10.5194/acp-24-5337-2024
https://doi.org/10.5194/acp-24-5337-2024
Research article
 | 
07 May 2024
Research article |  | 07 May 2024

Observationally constrained regional variations of shortwave absorption by iron oxides emphasize the cooling effect of dust

Vincenzo Obiso, María Gonçalves Ageitos, Carlos Pérez García-Pando, Jan P. Perlwitz, Gregory L. Schuster, Susanne E. Bauer, Claudia Di Biagio, Paola Formenti, Kostas Tsigaridis, and Ron L. Miller

Data sets

AERONET V3 inversion data product Goddard Space Flight Center https://aeronet.gsfc.nasa.gov/new_web/download_all_v3_inversions.html

Model output files, as a stand-alone product, from Obiso et al. (2024) NASA Center for Climate Simulation https://portal.nccs.nasa. gov/datashare/giss-publish/pub/Obiso_ACP_2024

Model code and software

Lorenz-Mie FORTRAN programs based on Mishchenko et al. (2002) Goddard Institute for Space Studies https://www.giss.nasa.gov/staff/mmishchenko/Lorenz-Mie.html

Observationally constrained regional variations of shortwave absorption by iron oxides emphasize the cooling effect of dust Vincenzo Obiso et al. https://doi.org/10.5281/zenodo.10808381

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Short summary
We calculate the dust direct radiative effect (DRE) in an Earth system model accounting for regionally varying soil mineralogy through a new observationally constrained method. Linking dust absorption at solar wavelengths to the varying amount of specific minerals (i.e., iron oxides) improves the modeled range of dust single scattering albedo compared to observations and increases the global cooling by dust. Our results may contribute to improved estimates of the dust DRE and its climate impact.
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