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首页> 外文会议>World Congress on Particle Technology >Potential of Mineral Dust in Changing the Sea Surface Temperature and Precipitation over East Asia
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Potential of Mineral Dust in Changing the Sea Surface Temperature and Precipitation over East Asia

机译：矿物粉尘在改变海面温度和东亚降水中的潜力

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摘要

The distributions and radiative effects of mineral dust during winter half year over East Asia have been investigated in this study. The mineral dust is mainly located around 40°N, however, the aerosol optical depth (AOD) of dust can exceed over 0.6 over the Taklimakan desert both in MODIS observations and model simulations. The direct radiative forcings (DRFs) of dust are about - 9.23 W m~(-2) at the surface and 0.39 W m~(-2) at the top of atmosphere (TOA) in winter half year. With the presence of an interactive ocean model, the dust will decrease surface air temperature over East Asia (-0.25 K) except for oceanic regions. The increase in atmospheric temperature (0.015 K) will weaken the total heat flux and affect air specific humidity, which will finally decrease the precipitation over East Asia (-0.06 mm day~(-1)). Sea surface temperature (SST) responses are very important when evaluating the climatic effects of dust over East Asia. If we fix the SST in regional model, the weakening trend of precipitation can reach up to - 0.08 mm day~(-1).
机译：本研究已经研究了冬季半年内矿物粉尘的分布和辐射效应。矿物粉尘主要位于40°N左右，然而，在Modis观测和模型模拟中，灰尘的气溶胶光学深度（AOD）可能超过高于Taklimakan沙漠的0.6。灰尘的直接辐射强制（DRF）在冬季半年的大气层（TOA）顶部约为-9.23WM〜（-2）和0.39 W m〜（-2）。随着互动海洋模型的存在，除了海域外，灰尘将减少东亚的表面空气温度（-0.25 k）。大气温度的增加（0.015 k）将削弱总热量通量并影响空气特定湿度，最终将降低东亚的降水（-0.06毫米〜（-1））。海面温度（SST）响应在评估东亚尘埃的气候效应时非常重要。如果我们在区域模型中修复SST，降水疲软趋势可达 - 0.08毫米天〜（-1）。

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