abrupt change of temperature 涵义温度骤变
The results show that significant differences exist between the velocity IBL caused by the abrupt change of surface roughness and temperature IBL caused by the abrupt change of surface temperature.
结果表明：下垫面温度突变引起的温度内边界层与下垫面粗糙度突变引起的速度内边界层具有明显的差异。
A abrupt change of winter mean temperature, from low to high, occurred for Northern and Southern Xinjiang in 1979.
新疆北部和新疆南部冬季平均温度均在1979年发生了由低温向高温的突变。
Thus, this abrupt change was mainly caused by a temperature increase in summer as well as an annual snowfall decrease.
所以，本次突变系夏季温度升高、消融剧增为主导，叠加年降雪量递减的综合结果。
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