Aerosol-driven droplet concentrations dominate coverage and water of oceanic low-level clouds

@article{Rosenfeld2019AerosoldrivenDC,
  title={Aerosol-driven droplet concentrations dominate coverage and water of oceanic low-level clouds},
  author={Daniel Rosenfeld and Yannian Zhu and Minghuai Wang and Youtong Zheng and Tom Goren and Shaocai Yu},
  journal={Science},
  year={2019},
  volume={363}
}
Reflections on cloud effects How much impact does the abundance of cloud condensation nuclei (CCN) aerosols above the oceans have on global temperatures? Rosenfeld et al. analyzed how CCN affect the properties of marine stratocumulus clouds, which reflect much of the solar radiation received by Earth back to space (see the Perspective by Sato and Suzuki). The CCN abundance explained most of the variability in the radiative cooling. Thus, the magnitude of radiative forcing provided by these… Expand
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References

SHOWING 1-10 OF 56 REFERENCES
From aerosol-limited to invigoration of warm convective clouds
TLDR
It is proposed that convective-cloud invigoration by aerosols can be viewed as an extension of the concept of aerosol-limited clouds, where cloud development is limited by the availability of cloud-condensation nuclei. Expand
Hemispheric Aerosol Vertical Profiles: Anthropogenic Impacts on Optical Depth and Cloud Nuclei
TLDR
This work examines more than 1000 vertical profiles from 11 major airborne campaigns in the Pacific hemisphere and confirms that regional enhancements in aerosol light scattering, mass, and number are associated with carbon monoxide from combustion and can exceed values in unperturbed regions by more than one order of magnitude. Expand
Global observations of aerosol-cloud-precipitation-climate interactions
Cloud drop condensation nuclei (CCN) and ice nuclei (IN) particles determine to a large extent cloud microstructure and, consequently, cloud albedo and the dynamic response of clouds toExpand
Satellite-based estimate of global aerosol-cloud radiative forcing by marine warm clouds
Changes in aerosol concentrations affect cloud albedo and Earth’s radiative balance. Aerosol radiative forcing from pre-industrial time to the present due to the effect of atmospheric aerosol levelsExpand
Aerosol effects on cloud water amounts were successfully simulated by a global cloud-system resolving model
TLDR
The authors show that using explicit representation of cloud microphysics, in global scale modelling, rather than parameterisations, reduces the overestimation of aerosol effect on cloud properties. Expand
On the determination of a cloud condensation nuclei from satellite: Challenges and possibilities
[1] We use aerosol size distributions measured in the size range from 0.01 to 10+ μm during Transport and Chemical Evolution over the Pacific (TRACE-P) and Aerosol Characterization Experiment–AsiaExpand
Extensive closed cell marine stratocumulus downwind of Europe—A large aerosol cloud mediated radiative effect or forcing?
Marine stratocumulus clouds (MSC) cover large areas over the oceans and possess super sensitivity of their cloud radiative effect to changes in aerosol concentrations. Aerosols can cause transitionsExpand
Further evidence for CCN aerosol concentrations determining the height of warm rain and ice initiation in convective clouds over the Amazon basin
Abstract. We have investigated how aerosols affect the height above cloud base of rain and ice hydrometeor initiation and the subsequent vertical evolution of cloud droplet size and numberExpand
Cancellation of Aerosol Indirect Effects in Marine Stratocumulus through Cloud Thinning
Applying perturbation theory within a mixed layer framework, the response of the marine boundary layer (MBL) cloud thickness h to imposed increases of the cloud droplet concentration Nd as aExpand
Constraining the aerosol influence on cloud fraction
Aerosol-cloud interactions have the potential to modify many different cloud properties. There is significant uncertainty in the strength of these aerosol-cloud interactions in analyses ofExpand
...
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3
4
5
...