Seasonal updraft speeds change cloud droplet number concentrations in low-level clouds over the western North Atlantic

To determine the impact of dynamic and aerosol processes on marine low clouds, we examine the seasonal impact of updraft speed w and cloud condensation nuclei concentration at 0.43 % supersaturation ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inlin...

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Bibliographic Details
Published in:Atmospheric Chemistry and Physics
Main Authors: S. Kirschler, C. Voigt, B. Anderson, R. Campos Braga, G. Chen, A. F. Corral, E. Crosbie, H. Dadashazar, R. A. Ferrare, V. Hahn, J. Hendricks, S. Kaufmann, R. Moore, M. L. Pöhlker, C. Robinson, A. J. Scarino, D. Schollmayer, M. A. Shook, K. L. Thornhill, E. Winstead, L. D. Ziemba, A. Sorooshian
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2022
Subjects:
Physics
QC1-999
Chemistry
QD1-999
North Atlantic
Online Access:https://doi.org/10.5194/acp-22-8299-2022
https://doaj.org/article/3b3d57b926eb4a15900a764d9fd9bb93
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Summary:To determine the impact of dynamic and aerosol processes on marine low clouds, we examine the seasonal impact of updraft speed w and cloud condensation nuclei concentration at 0.43 % supersaturation ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>N</mi><mrow><msub><mtext>CCN</mtext><mrow><mn mathvariant="normal">0.43</mn><mspace linebreak="nobreak" width="0.125em"/><mi mathvariant="italic">%</mi></mrow></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="faa6509b9a168c2d20b916afe5c73f85"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-22-8299-2022-ie00001.svg" width="46pt" height="14pt" src="acp-22-8299-2022-ie00001.png"/></svg:svg> ) on the cloud droplet number concentration ( N C ) of low-level clouds over the western North Atlantic Ocean. Aerosol and cloud properties were measured with instruments on board the NASA LaRC Falcon HU-25 during the ACTIVATE (Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment) mission in summer (August) and winter (February–March) 2020. The data are grouped into different <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>N</mi><mrow><msub><mtext>CCN</mtext><mrow><mn mathvariant="normal">0.43</mn><mspace width="0.125em" linebreak="nobreak"/><mi mathvariant="italic">%</mi></mrow></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="46pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="d077d2e88cd5e3c72e44184910e391ad"><svg:image ...

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