Low cloud amount 低云量
estimation of cloud amount 云量估计
the satellite cloud amount 卫星总云量
The cloud amount is one of the most important factors in an astronomical site survey.
云量观测是天文选址的重要考察项目。
Annual and seasonal sunshine hours decreased with the increasing of low level cloud amount, and the reduction of sunshine hours increased along with vapor pressure in winter.
年、季日照时数减少与低云量增加关系密切,而冬季日照时数的减少还与水汽压的增加有关。
Similar to the method of Z index of precipitation, a trial research is made on monitoring drought by the amount of cloud, and the method of Z index of cloud amount is established.
类似于降水量Z指标法对旱情的监测,进行了云参数监测旱情的研究,建立了云量监测的Z指标法。
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