Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus

doi:10.1029/2019GL085081

This content will become publicly available on November 12, 2020

Title: Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus

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Abstract

In situ aircraft measurements obtained during the RACORO field campaign are analyzed to study the aerosol effects on different cloud regimes. Here, the results show that with increasing cloud condensation nuclei (CCN), cloud droplet number concentration ( N _d) significantly increases in stratocumulus (Sc) while remains almost unchanged in cumulus (Cu). By using a new approach to strictly constrain the dynamics in Cu, we found that neither simultaneously changing cloud dynamics nor dilution of cloud water induced by entrainment-mixing can explain the observed insensitivity of N _d. The different degree of reduction in cloud supersaturation caused by increasing aerosols might be responsible for the observed different aerosol indirect effect between Sc and Cu.

Authors:

Jia, H. ^[1];

^[2];

^[3];

^[4];

^[2]

Nanjing Univ. of Information Science & Technology, Nanjing (China); Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, and Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration, School of Atmospheric Physics; Univ. at Albany, Albany, NY (United States). Atmospheric Sciences Research Center
Nanjing Univ. of Information Science & Technology, Nanjing (China); Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, and Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration, School of Atmospheric Physics
Univ. at Albany, Albany, NY (United States). Atmospheric Sciences Research Center
Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.

Publication Date:: 2019-11-12

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1574425

Report Number(s):: BNL-212322-2019-JAAM
Journal ID: ISSN 0094-8276

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Geophysical Research Letters

Additional Journal Information:: Journal Name: Geophysical Research Letters; Journal ID: ISSN 0094-8276

Publisher:: American Geophysical Union

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; aerosol‐cloud correlation; cloud condensation nucle; cloud droplet number concentration; stratocumulus; cumulus; cloud supersaturation

Citation Formats


                    Jia, H., Ma, Xiaoyan, Yu, Fangqun, Liu, Yangang, and Yin, Y. Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus.  United States: N. p., 2019. 
        Web.  doi:10.1029/2019GL085081.

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                    Jia, H., Ma, Xiaoyan, Yu, Fangqun, Liu, Yangang, & Yin, Y. Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus.  United States.  doi:10.1029/2019GL085081.

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                    Jia, H., Ma, Xiaoyan, Yu, Fangqun, Liu, Yangang, and Yin, Y. Tue .  
        "Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus".  United States.  doi:10.1029/2019GL085081.

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@article{osti_1574425,

  title        = {Distinct Impacts of Increased Aerosols on Cloud Droplet Number Concentration of Stratus/Stratocumulus and Cumulus},

  author       = {Jia, H. and Ma, Xiaoyan and Yu, Fangqun and Liu, Yangang and Yin, Y.},

  abstractNote = {In situ aircraft measurements obtained during the RACORO field campaign are analyzed to study the aerosol effects on different cloud regimes. Here, the results show that with increasing cloud condensation nuclei (CCN), cloud droplet number concentration (Nd) significantly increases in stratocumulus (Sc) while remains almost unchanged in cumulus (Cu). By using a new approach to strictly constrain the dynamics in Cu, we found that neither simultaneously changing cloud dynamics nor dilution of cloud water induced by entrainment-mixing can explain the observed insensitivity of Nd. The different degree of reduction in cloud supersaturation caused by increasing aerosols might be responsible for the observed different aerosol indirect effect between Sc and Cu.},

  doi          = {10.1029/2019GL085081},

  journal      = {Geophysical Research Letters},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2019},

  month        = {11}

}

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