Additional,the annual mean total cloud cover and summer total cloud cover are yearly to decrease over the most of regions. The total cloud cover decrease in northwest of the West Sichuan Plateau,the south and east of Yunnan Province.
年平均总云量及夏季总云量在西南大部分地区呈逐年递减趋势,冬季总云量在川西高原西北部和云南南部、东部呈减少趋势。
参考来源 - 近46年西南地区云量的时空变化特征·2,447,543篇论文数据，部分数据来源于NoteExpress
The main reason causing the decrease of evaporation from Erhai Lake is the increase of total cloud cover.
引起洱海水面蒸发量逐步减少的主要原因是总云量呈增多趋势。
Comparing the distribution of total cloud cover from ISCCP with that observed from surface stations, the rationality of ISCCP-D2 data is validated.
将ISCCP总云量与地面观测总云量分布形势作了比较，证明了ISCCP - D2资料的合理性。
Evaporation from Erhai Lake decreases with the increase of total cloud cover and relative humidity, and it increases with the increase of mean wind speed and sunshine duration.
洱海水面蒸发随着总云量和相对湿度的增加而减小，随着平均风速和日照时数的增大而增大。
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