Enhancement of ice-phase precipitation caused by thermal forcing produces ghost echoes over the Tibetan Plateau
Enhancement of ice-phase precipitation caused by thermal forcing produces ghost echoes over the Tibetan Plateau
复制标题
热强迫引起的冰相降水增强在青藏高原上空产生幽灵回波
DOI:
10.1038/s41612-021-00199-2
复制
发表时间:
2021-08
影响因子:
9
通讯作者:
Yunfei Fu
中科院分区:
文献类型:
--
作者:
Yilun Chen;Aoqi Zhang;Shumin Chen;Chaoyong Tu;Weibiao Li;Yunfei Fu
AbstractWhether tall storms produce heavy precipitation is currently a controversial topic. Here, we used seven years of observations from the dual-frequency precipitation radar and found that there is a rare but unique vertical precipitation structure over the Tibetan Plateau. The radar echo peaks above the freezing height, which we refer to as a “ghost echo”. The existence of a ghost echo increases the echo-top height but suppresses the increase in droplet size below it, and therefore weakens the near-surface precipitation. Compared with normal echoes, ghost echoes appear more often in the afternoon. The potentially unstable environment produced by thermal forcing is the main cause of ghost echoes, rather than the dynamic factor of wind shear. The ghost echo, which is essentially a mechanism of ice-phase precipitation enhancement, represents a type of tall but weak precipitation. Its existence adds to our current perception of the nature of precipitation.
登录
查看更多内容
DOI:
10.1029/2019jd032133
发表时间:
2020
期刊:
Journal of Geophysical Research: Atmospheres
影响因子:
--
作者:
Liu Xiaolin;Liu Yimin;Wang Xiaocong;Wu Guoxiong
通讯作者:
Wu Guoxiong
影响因子:
20.6
作者:
Fu Y;Ma Y;Zhong L;Yang Y;Guo X;Wang C;Xu X;Yang K;Xu X;Liu L;Fan G;Li Y;Wang D
通讯作者:
Wang D
影响因子:
8.9
作者:
Leonardo Porcacchia;P. Kirstetter;V. Maggioni;S. Tanelli
通讯作者:
Leonardo Porcacchia;P. Kirstetter;V. Maggioni;S. Tanelli
DOI:
10.1360/02yd9060
发表时间:
2002-07
期刊:
Science in China Series D: Earth Sciences
影响因子:
--
作者:
Xiangde Xu;Mingyu Zhou;Jiayi Chen;L. Bian;Guangzhi Zhang;Huizhi Liu;Shiming Li;Hongsheng Zhang;Yijun Zhao;Suolongduoji;Wang Jizhi
通讯作者:
Xiangde Xu;Mingyu Zhou;Jiayi Chen;L. Bian;Guangzhi Zhang;Huizhi Liu;Shiming Li;Hongsheng Zhang;Yijun Zhao;Suolongduoji;Wang Jizhi
影响因子:
3.1
作者:
S. Medina;B. Smull;R. Houze;M. Steiner
通讯作者:
S. Medina;B. Smull;R. Houze;M. Steiner