在高纬地区，由于电离层闪烁，从TEC时间变化曲线提取不出来总电子含量增加值。
Due to the ionospheric scintillation, the TEC enhancement couldn't be derived from temporal TEC variation curves in the high latitudes.
在全球增暖背景下，冬季北半球高纬地区增温幅度更大，但温度变化明显具有区域性特点。
Under the background of global warming, the amplitude of temperature increase in winter in northern high latitudes is getting bigger and it has different features in different regions.
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