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

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 (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.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [2]
  1. 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
  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
  3. Univ. at Albany, Albany, NY (United States). Atmospheric Sciences Research Center
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
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 Volume: 46; Journal Issue: 22; 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.
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.
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. https://www.osti.gov/servlets/purl/1574425.
@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 = 22,
volume = 46,
place = {United States},
year = {2019},
month = {11}
}

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