雪雨霰 的英文怎麼說
中文拼音 [xuěyǔxiàn]
雪雨霰
英文
sleet-
The main mechanism of enhancing precipitation is that much ice nuclei turn into ices, and then snow ; graupel are formed more by microphysical processes. the melting of graupel makes precipitation more than that of unseeded clouds
主要的增雨機制是大量冰核活化成冰晶,冰晶通過增長和其他的微物理過程形成雪晶、霰,霰最後融化成降水使地面降水量增加。Based on the dynamic frame of mm5 and reisner 2 explicit cloud scheme, a new double - moment microphysical scheme was developed, in which both the mixing ratios and number concentrations of cloud water, rain water, cloud ice, snow and graupel were predicted
從本質上說,該方案預報的僅僅是粒子的比含水量。在mm5動力框架內,在其中的reisner2方案基礎上採用雙變參數方案,增加了雲水、雨水、雪和霰的數濃度預報方程。The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included
雲中凝結核ccn的數濃度採用超幾何函數表示;雲水向雨水的自動轉換過程採用grabowski ( 1999 )的公式,考慮了雲滴譜的特徵和發展變化對該過程的影響,而不是採用原方案給定閾值的方法描述該過程;對連續碰並方程不再將粒子落速差作為常量提出積分號外,而是直接作為粒子直徑函數在積分號內求解,這樣處理可以迴避使用粒子群的平均落速帶來的誤差;增加了霰和雪、霰和冰晶的碰並微物理過程。A complex mixed - phase explicit microphysical parameterization scheme, which also be known as reisner 2 explicit scheme was developed for use in the ncar / penn state mesoscale model versions ( mm5 ). the single - moment schemes has additional variables for graupel and ice number concentration, in which the mixing ratio of cloud water, rain water, cloud ice, snow and graupel are predicted and number concentration specified
Mm5中的reisner2方案是一種含霰的復雜混合相顯式雲物理方案,該方案包含了雲水、雨水、冰晶、雪和霰的混合比預報方程,同時對冰晶的數濃度作了預報。From the atmosphere, water molecules fall upon the earth's surface as rain, snow, hail and sleet.
水分子以雨、雪、雹和霰的形式從大氣圈降落到地表。The quantity of water, expressed in inches, precipitated as rain, snow, hail, or sleet in a specified area and time interval
降雨量雨的數量以英寸表示,為某一地區在特定時間段內雨、雪、冰雹或霰的積累量分享友人