[Grad-postdoc-assn] REMINDER: Next asp seminar by Dr. Phil Rasch - Tomorrow 1:30pm at ML (Lunch at 12:00pm at ML cafeteria)

Hyeyum Shin hshin at ucar.edu
Wed Feb 12 10:02:01 MST 2014


Hi all,

The next asp seminar by Dr. Phil Rasch will take place tomorrow, 13 February, "1:30 pm" at the "ML Main Seminar Room".
"Before" the seminar, at "12:00 pm" at the "ML cafeteria", the lunch with Dr. Phil Rasch is scheduled. Feel free to join!

Dr. Phil Rasch serves as the Chief Scientist for Climate Science at the Pacific Northwest National Laboratory (PNNL). He was an ASP Graduate Fellow and also ASP Postdoctoral Fellow at NCAR, and worked as a scientist in various positions at CGD/NCAR until 2008. He joined PNNL in 2008 as the Chief Scientist. 

Here are detailed information about his seminar. Hope to see all of you there!


Dr Phil Rasch, Chief Scientist for Climate Science, Pacific Northwest National Laboratory
Time: 1:30 pm, Thursday, 13 Feb 2014
Location: ML - Main Seminar room
Title: Problems and Prospects for improved representation of aerosol impacts in climate models

Abstract:
Aerosols are ubiquitous in the atmosphere, and play many roles in the
climate system, scattering and absorbing light, acting as nuclei for
liquid and ice particle formation (important to clouds properties), acting
as sites for photochemistry and as delivery agents for nutrients to
biological systems. A substantial fraction of aerosols are of
anthropogenic origin. Aerosols have been identified variously as: 1) one
of the most uncertain factors in historical climate change, increasing
uncertainty about Earth¹s sensitivity to greenhouse gas concentration
changes, and 2) as "uncertain then, irrelevant now".  In this talk I will
review some of the reasons why aerosol impacts are so difficult to
characterize, some recent attempts to improve their treatment in climate
models, discuss a few studies my group has been involved in recently, and
close contending that aerosols are "uncertain then, but not irrelevant
now".



The Seminar Committee
(Fang Fang, Rajesh Kumar, Yumin Moon, Jorge Salazar, and Hyeyum Shin)
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