A PRELIMINARY STUDY ON THE HETEROGENEOUS CHEMICAL PROCESSES ON THE DUST SURFACE AND THEIR EFFECT ON CLIMATE
A PRELIMINARY STUDY ON THE HETEROGENEOUS CHEMICAL PROCESSES ON THE DUST SURFACE AND THEIR EFFECT ON CLIMATE
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沙尘表面非均相化学过程及其对气候影响的初步研究
DOI：
10.1292/jvms.68.65
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
L. Hong
中科院分区：
文献类型：
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作者：
L. Hong
建立了一个包含沙尘排放的非均相化学模式，并与先进的中尺度气象大气化学模式系统相连接。利用该模式系统模拟了大量个例，研究了沙尘气溶胶的非均匀化学过程及其气候效应。结果表明，非均相反应会降低SO2和O3的浓度，但增加硫酸盐的浓度。在某些地区，它可以降低NO2浓度，但在其他地区也可以增加它。硫酸盐年平均变化量为2.6mg/m2。非均匀反应辐射强迫的最大值分别出现在1月、4月、7月和10月，分别为-0.24、-1.0、-2.0和-0.6W/m2。年平均辐射强迫为-0.033W/m2。1月、4月、7月和10月的最高气温变化分别为-0.16、-0.35、-0.5、-0.48K，全区年平均气温变化为-0.021K。非均匀过程对降水也有明显的影响。
We set up a heterogeneous chemical model which includes dust emission and connects an advanced meso scale meteorological atmospheric chemical model system. A lot of cases are simulated by this model system to study the heterogeneous chemical process of dust aerosol and its climate effect. The results show that the heterogeneous reaction will reduce the concentrations of SO 2 and O 3, but increase sulfate concentration. In some areas, it can decrease the NO 2 concentration, but it can also increase it in other areas. The change of annual average sulfate is 2 6mg/m 2. The maximum values of radiative forcing caused by heterogeneous reaction are -0.24 , -1.0 , -2.0 ,and -0.6 W/m 2 in January, April, July and October, respectively. The annual average radiative forcing is -0.033 W/m 2. The maximum temperature variation in January, April, July and October are -0.16 , -0.35 , -0.5 , -0.48K , respectively and have the annual temperature variation in the whole domain is -0.021K . The heterogeneous processes also have evident effect on precipitation.