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...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
2022
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Subjects: | |
Online Access: | https://doi.org/10.5194/acp-22-8299-2022 https://acp.copernicus.org/articles/22/8299/2022/ |
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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