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学术报告:Downscaling Simulation of the Arctic climate using the high-resolution regional atmospheric model Polar WRF 打印

Downscaling Simulation of the Arctic climate using the high-resolution regional atmospheric model Polar WRF

人: Dr. Minghong Zhang

单    位:  Bedford Institute of Oceanography, Dartmouth, Canada

地    点:40号楼 710 会议室

时    间:2017年 5月 19号(周五)2:30 pm


Abstract
Atmospheric and oceanic components of the Arctic are transitioning to a more dynamic state, compared to earlier decades. For example, recent observed decreases in multi-year ice suggest that projections of ice-free Arctic Ocean summers by 2030–2050 may underestimate the observed rate of change. Global Climate Models (GCMs) are useful tools to understand potential climate change on the scale of ocean basins but they lack the spatial resolution to give good estimates over the shelf, especially in semi-enclosed systems like the Beaufort and Chukchi Seas. Semi-enclosed seas typically respond to local forcing (including winds, heat fluxes, precipitation and runoff) which is not represented well in GCMs, thus rendering the analysis of their output less reliable for shelf and land-bounded waters. In order to better assess ocean climate change over the Arctic, we use a dynamical regional climate downscaling system for simulating the Beaufort Sea and west Canadian Arctic Ocean.

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