Wednesday, February 9, 2011

spring Beijing and north China

To ease the drought limited role

Q what extent this snow can alleviate drought, 108 days without valid precipitation, meteorological drought is development of agricultural drought?

A Beijing meteorological offices SunJiSong: the chief weatherman of meteorological drought relief, limited role, because rainfall is small. This snow, can only add a bit of soil surface, but for the moisture content of the soil moisture, improve internal function actually very limited. Agricultural hydrating also still be ready for that.

From the climate on say, Beijing throughout the winter the precipitation itself is small, less than 2% of year-round, in this sense, the current drought or mainly meteorological drought is given priority to, also is not really into agricultural drought. But if spring, after long time don't rain or snow words, meteorological drought have could be converted into agricultural drought, but there is not too to say. Spring from climate probability of speaking, Beijing of rainwater can increase somewhat. Now winter wheat or crops, basic are in hibernation, if the surface temperature rebounded to 0 ℃ above, winter wheat also began the regreening, this needs the rain, if rain that time again miss, would turn to agricultural drought.

Not necessarily cause sandstorms increase

Q HuangHuai areas continued north, without precipitation, in winter precipitation distinctness lack of cases, area of sandstorm produce how many influence?

A Beijing meteorological offices and the chief weatherman SunJiSong: Beijing of dust or north of dust, it is not the sand from local, mainly from northwest of Inner Mongolia, Mongolia, from the first winter rainfall perspective, the area slants little not very serious. This kind of situation, for spring dust how much impact? Depends on several factors, one is the strength, the second, cold air HuaDong the morning and evening, if HuaDong early, crop and slow, cold air regreening forces strong, there may be more dust, but now the time also too far, not too good estimate.

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