The immediate cause of the problems is the behaviour of the jet stream, a band of high-level wind that travels east around the world and influences much of the weather below it.
引起这些问题的直接原因是急流[注1]的运动方式 ----在高空、绕地球向东流动并能给下面的天气造成很大影响的一股风。
Up near the jet stream above New York, the wind power density can reach 16 kilowatts per square meter.
在纽约上空的射流层(对流层顶)附近,风能密度可达16千瓦每平方米。
The calculated results show that the calculated diagnostic wind fields are more similar to climatology than the geostrophic wind fields, especially, in the jet stream area.
通过对结果的分析,发现用此方法得到的诊断风场比地转风场更接近实际,特别是急流区。
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