The weather observatory said north China will face strong winds in the next three days, with temperatures in some parts falling by 10-12 degrees Celsius.

气象观测站显示：在未来三天内，中国北方将会面临大风天气，同时部分地区气温将下降10 - 12摄氏度。

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The effects of this weather dichotomy are clearly visible in satellite imagery released this week at the NASA Earth Observatory.

天气的这种始终不一所带来的影响在本周美国航天航空局发布的地球观测卫星图中清晰可见。

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The Observatory routinely calculates two commonly used weather indices which are useful for estimating the soaring conditions, namely the Thermal Index and the Soaring Index.

天文台利用京士柏气象站的最新气球探空数据，计算两个天气指数，即热力指数和滑翔指数，以供用家参考。

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"It certainly makes getting out of bed very difficult, " said Fitzgerald, who lives on the mountain eight days at a stretch as a weather observer for the private Mount Washington Observatory.

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When a typhoon is expected to land in Hong Kong, the Hong Kong Observatory is prepared with a comprehensive alert system that issues hourly summaries of weather warnings through the news and radio.

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