Kara Lamb — Penn State Meteorology and Atmospheric Science

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Kara LambSummary:

Cirrus clouds play a vital position within the Earth’s radiation price range, and act as essential controls at the distribution of water vapor within the higher troposphere and decrease stratosphere. Alternatively, ice microphysical processes are observationally difficult to constrain. One main problem in constraining ice enlargement fashions towards observations is that experimental measurements are frequently difficult to interpret, and require assumptions concerning the underlying bodily processes. This loss of transparent bodily figuring out limits our skill to style ice crystal behavior and enlargement charges in atmospheric fashions and to interpret in situ observations. Whilst there was an expanding availability of experimental and observational information from laboratory and in situ observations, other strategies supply disparate assets of data. In situ observations from airplane and balloon platforms supply detailed native knowledge, however best at unmarried snapshots in time, in restricted sampling prerequisites, and with out enlargement time-scales. Laboratory experiments permit ice enlargement to be monitored through the years, however earlier research on depositional ice enlargement have discovered important discrepancies between unmarried crystal experiments and bigger scale cloud chamber experiments that extra realistically simulate atmospheric prerequisites. I can describe paintings from a number of fresh research investigating how observations from the AIDA Aerosol and Cloud Chamber can be utilized to derive constraints on ice microphysical fashions the usage of cirrus simulation experiments within the natural ice regime (180 – 230 Ok) with each homogenous and heterogenous ice nuclei. I can speak about how strategies equivalent to physics-informed gadget finding out can be utilized to scale back parametric and structural uncertainty in ice microphysical job charges, with no priori assumptions concerning the ice enlargement fashions. I can additionally speak about how those experiments are used to signify isotopic water as a tracer for cirrus processes, and the potential for those measurements for constraining atmospheric processes. 

Bio: Kara Lamb is a analysis scientist at Columbia College and on the NSF Finding out the Earth with Synthetic Intelligence and Physics (LEAP) Middle at Columbia. Her present analysis lies on the intersection of observations (from laboratory and box research) and high-resolution modeling, with the function of higher figuring out how aerosols and clouds affect the local weather. She combines conventional process-based approaches with information science and gadget finding out. She bought her PhD in physics from the College of Chicago, and up to now labored as a analysis scientist at CIRES/NOAA, the place she used to be at the science crew for the NASA KORUS-AQ and ATOM airplane campaigns and the NOAA FIREX Firelab find out about.



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