Radar reflectivity of falling snow.
Radar reflectivity of falling snow.
复制标题
落雪的雷达反射率。
DOI：
10.2467/mripapers1950.6.2_130
复制
发表时间：
1955
期刊：
影响因子：
--
通讯作者：
Y. Toyama
中科院分区：
文献类型：
--
作者：
I. Imai;M. Fujiwara;I. Ichimura;Y. Toyama
为了研究降雪的雷达反射率，对降雪颗粒的大小分布进行了连续观测，同时研究了降雪速度与积雪融化直径的关系。结果表明，雷达反射率Z与降雪强度R在1小时左右的时间内存在一定的关系。随着雪花聚集程度的变化，该系数出现突变。这些系数大约是马歇尔关系式的3到10倍。对观测到的尺寸分布曲线作了简要的讨论。
To investigate the radar reflectivity of falling snow, a continuous observation of size distributions of snow particles was made The fall velocity in relation to the melted diameter of snowflakes was studied simultaneously. The results show that a definite relationship between the radar reflectivity Z and the intensity of snowfall R exists for a duration of an hour or so. With the change in the degree of aggregation of snowflakes, an abrupt change of the coefficient occurs. The coefficients are some 3 to 10 times as great as that in MARSHALL'S relation. A brief discussion of the observed size-distribution curves is made.