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UID:20250731T064447EDT-0885pXVZCL@132.216.98.100
DTSTAMP:20250731T104447Z
DESCRIPTION:Microphysical-macrophysical interactions in marine stratocumulu
 s\n\nMarine stratocumulus is one of the most important low cloud systems o
 ver the remote oceans due to their poor representation in climate models\,
  and there have been insufficient long-term observations to constrain the 
 key processes that govern their behavior. The responses of shallow cloud s
 ystems to changes in atmospheric aerosols are major sources of uncertainty
  that limits the accuracy of predictions of future climate. Aerosols modif
 y the cloud microphysics\, which modulates cloud dynamics\, entrainment an
 d precipitation\, and in turn regulates cloud macrophysical processes. Thi
 s is referred to as the microphysical-macrophysical interactions. A better
  understanding of this process helps determine cloud radiative properties 
 that impact climate. \n\nThis proposal mainly focuses on microphysical-mac
 rophysical interactions of marine stratocumulus with the large scale and t
 he mesoscale. We proposed to use large domain Large-Eddy-Simulation model 
 (LES)\, observational data from the U.S. Department of Energy (DOE) Atmosp
 heric Radiation Measurements (ARM) program fixed Eastern North Atlantic (E
 NA) site\, and a comprehensive radar simulator in our research. On large s
 cales\, stratocumulus is observed to weaken and eventually break up to low
 -coverage cumulus\, during which long-range transport of continental air m
 asses transports aerosols that can impact microphysical processes over rem
 ote ocean regions downstream. On mesoscales\, stratocumulus is observed to
  organize in a closed-cellular (dim walls\, bright centers) or pockets of 
 open-cellular (bright walls\, dim centers) structures\, and the impact of 
 drizzle is considered to be critical. Modeling work in two different topic
 s of interest is undergoing: I) role of solar-absorbing aerosols in the tr
 ansition of stratocumulus to trade cumulus and II) role of drizzle in the 
 mesoscale organization of marine stratocumulus. The first research objecti
 ve is mainly a modeling study while the second one combines all available 
 tools (LES\, ENA observations and forward modeling).\n
DTSTART:20160203T193000Z
DTEND:20160203T200000Z
LOCATION:Room 934\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Student Seminar: Xiaoli Zhou
URL:/meteo/channels/event/student-seminar-xiaoli-zhou-
 255070
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