Publication Abstracts
Li et al. 2025
Li, L., N.M. Mahowald, V. Obiso, J.F. Kok, , X. Liu, M. Gonçalves Ageitos, C. Pérez García-Pando, D.M. Leung, Z. Ke, P.G. Brodrick, R.N. Clark, P. Formenti, C. Di Biagio, P. Ginoux, G.S. Okin, B. Zhou, D.R. Thompson, and R.O. Green, 2025: Dust direct radiative effect including large particles and component minerals. Geophys. Res. Lett., 52, no. 22, e2025GL119383, doi:10.1029/2025GL119383.
The direct radiative effect (DRE) of dust aerosols in Earth system models (ESMs) remains highly uncertain, largely due to inadequate representations of particle size distribution (PSD) and mineral composition. Using NASA's Earth Surface Mineral Dust Source Investigation (EMIT) soil mineralogy data and observed PSD in an ESM that resolves dust mineral composition and emitted diameters from 0.1 to 70 µm, we find a near-neutral global dust net DRE (-0.057 W/m2), weaker than most previous estimates. Large dust (diameter > 10 µm) contributes 30% of the global longwave dust optical depth, providing observational constraints on large-particle abundance, and offsets 20% of the dust shortwave cooling over major source regions. Incorporation of EMIT mineralogy reduces shortwave uncertainty by more than 50%. The remaining uncertainty mainly exists in processes controlling dust abundance, particularly the poorly understood transport of large dust, and longwave optical properties, which require additional observational constraints to more accurately quantify the dust DRE.
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BibTeX Citation
@article{li02510w,
author={Li, L. and Mahowald, N. M. and Obiso, V. and Kok, J. F. and Miller, R. L. and Liu, X. and Gonçalves Ageitos, M. and Pérez García-Pando, C. and Leung, D. M. and Ke, Z. and Brodrick, P. G. and Clark, R. N. and Formenti, P. and Di Biagio, C. and Ginoux, P. and Okin, G. S. and Zhou, B. and Thompson, D. R. and Green, R. O.},
title={Dust direct radiative effect including large particles and component minerals},
year={2025},
journal={Geophysical Research Letters},
volume={52},
number={22},
pages={e2025GL119383},
doi={10.1029/2025GL119383},
}
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RIS Citation
TY - JOUR ID - li02510w AU - Li, L. AU - Mahowald, N. M. AU - Obiso, V. AU - Kok, J. F. AU - Miller, R. L. AU - Liu, X. AU - Gonçalves Ageitos, M. AU - Pérez García-Pando, C. AU - Leung, D. M. AU - Ke, Z. AU - Brodrick, P. G. AU - Clark, R. N. AU - Formenti, P. AU - Di Biagio, C. AU - Ginoux, P. AU - Okin, G. S. AU - Zhou, B. AU - Thompson, D. R. AU - Green, R. O. PY - 2025 TI - Dust direct radiative effect including large particles and component minerals JA - Geophys. Res. Lett. JO - Geophysical Research Letters VL - 52 IS - 22 SP - e2025GL119383 DO - 10.1029/2025GL119383 ER -
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