Cited by 4,422Atmospheric aerosols and cloudsAtmospheric chemistry and aerosolsClimate Change and Geoengineering

Aerosols, Cloud Microphysics, and Fractional Cloudiness

Albrecht, Bruce A.·1989·Science

Abstract

Increases in aerosol concentrations over the oceans may increase the amount of low-level cloudiness through a reduction in drizzle—a process that regulates the liquid-water content and the energetics of shallow marine clouds. The resulting increase in the global albedo would be in addition to the increase due to enhancement in reflectivity associated with a decrease in droplet size and would contribute to a cooling of the earth's surface.

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Crossref · 10.1126/science.245.4923.1227

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  • More recent studies show that aerosols can also change LWP and total cloud fraction (CF), which also greatly affect the amount of solar radiation reflected by clouds.

    “More recent studies show that aerosols can also change LWP and total cloud fraction (CF), which also greatly affect the amount of solar radiation reflected by clouds2,13–16.”
  • A key objective for MCB experiments is to test hypotheses about aerosol-cloud interactions, such as the Twomey effect and cloud lifetime effects (suppressed precipitation).

    “A key objective for the MCB experiments is to test hypotheses about aerosol-cloud interactions, such as the Twomey effect (higher aerosol loadings typically lead to more, smaller cloud droplets, resulting in enhanced cloud albedo and thus more sunlight reflection) (Twomey, 1977) and cloud lifetime effects (suppressed precipitation) (Albrecht, 1989; Y. Chen et al., 2024; Feingold et al., 2024).”

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Authors
Albrecht, B. A.
Affiliations
Pennsylvania State University (US)
Corresponding author
Albrecht, Bruce A.
Venue
Science
Published
1989-09-15
Volume
245
Issue
4923
Pages
1227-1230
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2064943738
Cited by
4,422
References
34
Citations by year
2026: 166 · 2025: 252 · 2024: 313 · 2023: 286 · 2022: 369 · 2021: 373 · 2020: 198 · 2019: 159 · 2018: 173 · 2017: 159 · 2016: 151 · 2015: 158 · 2014: 159 · 2013: 166 · 2012: 169
FWCI
25.85
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Geoengineering
Keywords
marine aerosols, cloud microphysics, drizzle, cloud albedo, droplet size, aerosol-cloud interactions, global cooling

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