自然灾害是指大气、地质或水文等因素造成的灾变，包括地震、火山爆发、泥石流、海啸、洪水和干旱等。
Natural disasters are catastrophic events with atmospheric, geologic, and hydrologic origins. Disasters include earthquakes, volcanic eruptions, landslides, tsunamis, floods, and drought.
随着土地干旱、沙漠化面积增大，更多沙尘被风带进大气层。
A more of the world dries out and deserts expand, wind may pick up more dust into the atmosphere.
在那里，冷空气下沉，提高大气压力和抑制大部分沿太平洋海岸的雨，使它成为世界上最干旱的地区。
There, the cooled air sinks, raising atmospheric pressure and suppressing rain along most of the Pacific coast, making it one of the driest regions in the world.
干旱会使甲烷的排放降低，但这样的好事很快就要结束了。在中国本身的温室气体排放持续增加的同时，现在又有额外的温室气体被泵入大气。
Soon, however, the drought that has reduced wetland emissions will end, pumping additional greenhouse gases into the atmosphere as China's own emissions continue to rise.
从大气环流特征、干旱指数S及信噪比等三个方面对陕西省近几年干旱月份进行了分析。
Shaanxi province drought months in recent years were analysed by examining the atmosphere general circulation features, drought index S and the signal to noise ratio.
结果表明， 云南极端干旱年春季与多雨年春季的大气环流特征有明显的差异。
The results show that the characteristis of atmospheric circulation in rainy spring are different from that of in spring of drought year.
因此可以推断，中国北方，特别是干旱荒漠区，大气气溶胶主要来自沙尘天气过程引起的地面沙尘释放。
According to the results above, in the northern China, especially in droughty and desert regions, the atmospheric aerosol mainly comes from the sand which is come into being with the dust weather.
我国干旱、半干旱区陆面能量平衡及其局地大气环流的年代际变率，是全球气候系统年代际变率的必然结果。
The interdecadal variability of surface energy balance and its related regional atmospheric circulation results from that of the global climate system.
干旱多尘土季节大气中的铅尘大于雨季。
In drought season lead-dust in atmosphere is larger than that in rainy season.
自然灾害源于大气、地理或者水文的灾变，包括地震、火山爆发、泥石流、海啸、洪水和干旱等。
Natural disasters are catastrophic events with atmospheric, geologic, and hydrologic origins. Disasters include earthquakes, volcanic eruptions, landslides, tsunamis, floods, and drought.
大气逆辐射在东北冷区最明显，在黄土高原区最弱；地表长波辐射在西北干旱区最强而在东北冷区最弱。
The downward long-wave radiation is strongest in the cold region and weakest in the Loess Plateau while the upward long-wave radiation is obvious in the arid region and weak in the cold region.
大气逆辐射在东北冷区最明显，在黄土高原区最弱；地表长波辐射在西北干旱区最强而在东北冷区最弱。
The downward long-wave radiation is strongest in the cold region and weakest in the Loess Plateau while the upward long-wave radiation is obvious in the arid region and weak in the cold region.
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