During the jinta experiment in 2004 , sounding balloons were set free to collect the meteorological data in the upper air , such as temperature , pressure , and humidity to calculate the total water content in the air 摘要2004年夏季，选择天气状况较好的时段在金塔县施放探空气球，采集高空温、压、湿等气象要素计算整层大气水汽含量。
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