[Eoas-seminar] MET Seminar - Tuesday April 1 - Dr. Andrew Williams (Princeton/NOAA GFDL)

[eoas-seminar at lists.fsu.edu]

Dear all,

Please join us for next week’s MET seminar on Tuesday April 1 at 3 PM, which will be given by Dr. Andrew Williams<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fandrewilwilliams.github.io%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C254f6486f4da452171ee08dd6df016b3%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638787600109354710%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=aWITfKRPcMqDhvq3X2GM0%2F0V6HJXwkVPcqXxnSfbHMU%3D&reserved=0>, who is a postdoctoral research fellow at Princeton University/NOAA GFDL. He will speak about "A robust constraint on the response of convective mass fluxes to warming.” (abstract below).

Dr. Williams will be presenting his seminar virtually but we will join together in 1044 to attend the seminar. A Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Allison Wing (awing at fsu.edu<mailto:awing at fsu.edu>) for the link.

If you would like to meet with Dr. Williams via Zoom, please contact Allison Wing (awing at fsu.edu<mailto:awing at fsu.edu>)

DATE: Tuesday April 1
SEMINAR TIME: 3-4 PM, please join early for refreshments
SEMINAR LOCATION: EOA 1044 (speaker remote)
SPEAKER: Dr. Andrew Williams<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fandrewilwilliams.github.io%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C254f6486f4da452171ee08dd6df016b3%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638787600136513995%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=H4FEQCJFTHKdQkv3GzHC2zSxzSN9pd5NUD2rv4HRWmg%3D&reserved=0>

TITLE: A robust constraint on the response of convective mass fluxes to warming

ABSTRACT: A fundamental quantity in tropical dynamics is the "convective mass flux", which measures the rate at which mass is transported upwards, per unit area, in convective updrafts. Convective mass flux encodes information about the frequency and intensity of thunderstorms and has been linked to the strength of the large-scale tropical circulation. In this talk I will introduce a new framework for quantifying changes in convective mass flux using the clear-sky energy budget. This framework shows that convective mass fluxes decrease at around 3-5 % / K under warming, when viewed at a fixed isotherm. This decrease in convective mass flux with warming is driven by a stabilization of the lapse rate and can be captured with a simple analytical model. I also revisit previous work by Held and Soden (2006), who proposed a scaling for changes in the convective mass flux with warming, and show that the Held and Soden scaling does not capture inter-model spread in mass flux changes under warming.

This work provides a quantitative constraint on changes in convective mass flux with warming and establishes a new framework for understanding changes in convection in a warming climate.

——————————————————
Allison Wing, Ph.D.
Werner A. and Shirley B. Baum Professor
Associate Professor, Department of Earth, Ocean and Atmospheric Science
Florida State University
awing at fsu.edu





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