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。
The ground effective radiations are calculated based on the ground temperature. air temperature. water vapour pressure and total cloud cover.
再利用地面温度、气温、水汽压和总云量，计算得出福建省各地的地面有效辐射的月、年平均辐照度。
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。
Thick cloud cover over India obscured the sun when the eclipse began but the clouds parted in several cities, minutes before the total eclipse took place at 6.24am.
日食开始时，印度为密云所笼罩，但在6时24分日全食发生的前几分钟，几个城市的云层开始解体。
Thick cloud cover over India obscured the sun when the eclipse began but the clouds parted in several cities, minutes before the total eclipse took place at 6.24am.
日食开始时，印度为密云所笼罩，但在6时24分日全食发生的前几分钟，几个城市的云层开始解体。
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