冬季和春季到对流层上层基本无水汽。
Winter and spring to the upper troposphere, almost no water vapor.
整个对流层平均温度呈微弱下降趋势。
A slight decrease in temperature is found for the entire troposphere in the period investigated.
必须通过对流层顶的热输送来建立平衡。
The balance must be made up by heat transported through the troposphere.
从偏冷期到偏暖期，整个热带对流层顶显著变暖。
The whole tropical tropopause has been warmed up from cold period to warm period.
从偏冷期到偏暖期，整个热带对流层顶显著变暖。
The whole tropical tropopause has been warmed up from cold period to warm period.
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