Toward Developing a Climatology of Fire Emissions in Central Asia
Toward Developing a Climatology of Fire Emissions in Central Asia
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DOI：
10.4137/aswr.s39940
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发表时间：
2016-01
期刊：
影响因子：
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通讯作者：
Yun-Hee Park;I. Sokolik
中科院分区：
文献类型：
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作者：
Yun-Hee Park;I. Sokolik
火排放是地球表面碳循环到大气的重要机制，火行为与天气和气候有很大的相互作用。然而，由于排放的年际变化和非线性烟羽动力学，了解火灾行为和大气之间的相互作用是具有挑战性的。这项研究的目的是建立一个气候学的火灾排放在中亚地区，并估计了反馈的火灾排放到气象变量的季节性基础上使用的天气研究和预测模型加上化学。4月、5月和9月的像素数量相对较多，其中羽流高度位于边界层内，并且这些月份的区域在最强烟雾时往往具有不稳定条件，显示出较低的稳定条件百分比。从季节分析，高火灾强度发生在夏季，烟雾在边界层上方移动，改变温度分布，增加水汽混合比。
Fire emissions are a significant mechanism in the carbon cycling from the Earth's surface to the atmosphere, and fire behavior is considerably interacted with weather and climate. However, due to interannual variation of the emissions and nonlinear smoke plume dynamics, understanding the interactions between fire behavior and the atmosphere is challenging. This study aims to establish a climatology of the fire emission in Central Asia and has estimated a feedback of fire emissions to meteorological variables on a seasonal basis using the Weather Research and Forecasting model coupled with Chemistry. The months of April, May, and September have a relatively large number of pixels, where the plume height is located within the boundary layer, and the domain during these months tends to have unstable conditions at the strongest smoke, showing a lower percentage of stable conditions. From the seasonal analysis, the high fire intensity occurs in the summer as smoke travels above the boundary layer, changing temperature profile and increasing the water vapor mixing ratio.