미국 워싱턴대학교 (University of Washington) 대기과학과 Dargan M. W. Frierson 교수가 오는 8월 27일 APEC 기후센터(APCC)를 방문한다. Prof. Frierson은 "Why is the ITCZ in the Northern Hemisphere? And why is there a double ITCZ Problem?" 라는 제목으로 오전 11시부터 APCC 2층에 위치한 에델바이스 회의실에서 세미나를 주재한다.

세미나 일정 등 상세 정보는 아래와 같다.


1. 발표자: Prof. Dargan M. W. Frierson (Department of Atmospheric Sciences, University of Washington)

2. 발표제목: Why is the ITCZ in the Northern Hemisphere? And why is there a double ITCZ Problem?

3. 일시: 2013년 8월 27일 화요일 오전 11시

4. 장소: APEC 기후센터 에델바이스 회의실 (2층)

5. Abstract
Recent results from idealized and comprehensive GCMs have shown that the ITCZ (Inter-tropical Convergence Zone) shifts towards heating even in high latitudes. The theoretical argument for this is that excessive heating in one hemisphere is spread into the tropics via eddies, where an anomalous Hadley circulation develops, transporting heat from warm to cold. This same anomalous Hadley circulation transports moisture into the warmer hemisphere.

We apply this theory to explain why the ITCZ is located primarily in the Northern Hemisphere, showing that the oceanic meridional overturning circulation is the primary reason that the NH atmosphere is heated more. Simulations are performed which confirm that the global circulation of the ocean is the reason that the ITCZ is located in the NH.

The double ITCZ problem is largely associated with excessive rain in the SH tropics, and this is very well-correlated with excessive heating in the SH in those models. The heating biases occur primarily from cloud biases over the Southern Ocean, where a lack of low cloud causes the entire hemisphere to be too warm.

6. Brief CV

- Education
1996-2000 North Carolina State University, Mathematics and Physics, B.S.
2000-2002 Princeton University, Applied Mathematics, M.S.
2002-2005 Princeton University, Applied Mathematics, Ph.D.

- Academic Positions
2005-2007 NOAA Climate and Global Change Postdoctoral Fellow, University of Chicago
2007-2012 Assistant Professor, Department of Atmospheric Sciences, University of Washington
2012-Present Associate Professor, Department of Atmospheric Sciences, University of Washington