Speaker: Yang Tian
Yang Tian will be presenting on Bony et. al. (2016). Her thoughts on the paper are:
Assessing the response of clouds to global warming remains a challenge of climate science. The authors showed that anvil cloud fraction deceases with increasing temperature by using three general circulation models (IPSL, MPI and NCAR) under a radiative-convective equilibrium state, and the results are also consistent with some cloud-resolving model simulations and observations. It is further shown that the controlling mechanism roots in the basic energetics and thermodynamics of the atmosphere, as climate warms, convection rises and maintains its temperature, whereas increased stability reduces convective outflow and the corresponding anvil cloud amount. When radiation, high clouds and temperature are fully coupled, a positive feedback contributes to the aggregation of convection, which results in narrowing of rainy areas as the climate warms. But there are other studies that point to the opposite direction (Singh and O’Gorman 2015; Khairoutdinov and Emanuel 2013), they found that the amount of anvil cloud actually increases with increasing temperature with different model microphysics and settings.
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LOCATION:Seminar Room MCZ, 440 STATUS:CONFIRMED DTSTART:20161101T190000Z DTEND:20161101T200000Z END:VEVENT END:VCALENDAR