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SUMMARY:Analysis of snow and aerosols deposition variability over High Mou
 ntain Asia and other major high mountain ranges - Hoi Ga “Veronica” Ch
 an\, Princeton University
DTSTART:20190116T140000Z
DTEND:20190116T150000Z
UID:TALK117769@talks.cam.ac.uk
CONTACT:Dr Gillian Young
DESCRIPTION:Mountain snowpack globally is a natural water tower\, which st
 ores winter precipitation and releases it in spring\, and is one of the ma
 jor sources of water. Winter precipitation pattern and radiative impacts o
 f light absorbing aerosols deposition on snow can change the amount and ti
 ming of snowmelt\, which not only has implications on water security but a
 lso food security\, hydropower generation\, regional ecology and hazards. 
 However\, quantifying mountain snowpack through observation\, even with th
 e use of remote sensing\, is challenging due to the remoteness and colocat
 ion with cloudy regions.\n\n \nHere\, we present an analysis of a 36-year 
 simulation with the new Geophysical Fluid Dynamics Laboratory (GFDL) atmos
 pheric model (AM4) coupled to a land surface model (LM4) with a 50 km hori
 zontal resolution (referred to as AM4-LM4) and using fixed observed sea su
 rface temperatures. The spatial distribution\, seasonal variability and tr
 ends of snow precipitation and deposition of aerosols\, such as mineral du
 st and black carbon\, over major mountain ranges with a particular emphasi
 s on High Mountain Asia will be discussed. We then explore the impacts of 
 aerosols deposition on snow albedo and snowmelt in High Mountain Asia.
LOCATION:British Antarctic Survey\, Seminar Room 330b
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