FY-4A资料在2023年7月1日宁安极端冰雹天气过程中的应用分析
Application Analysis of FY-4A Data in Extreme Hail Weather in Ning'an on July 1,2023
白玉兰 1刘刚 2周鑫 3刘冠鹏 1杨丹1
作者信息
- 1. 鹤岗市气象局,黑龙江 鹤岗 154107
- 2. 黑龙江省气象台,黑龙江 哈尔滨 150030
- 3. 牡丹江市气象局,黑龙江 牡丹江 157000
- 折叠
摘要
在冷涡背景下,2023 年 7 月 1 日牡丹江宁安出现最大直径达 9cm左右冰雹、10 级大风等强对流天气.利用MICAPS资料、雷达资料、FY-4A资料,选取FY-4A卫星云类型CLT、云相态CLP、云顶高度CTH和云顶温度CTT等 4 类产品进行可用性分析.结果表明:(1)FY-4A数据接收率、时间分辨率和数据接收及时性,可以支持实际预报中实时监测预警业务;(2)4 类产品在此次天气过程中有不同的表现,其中CLT、CLP具有较好的可用性,可以较好的判断云的类别;CTH和CTT两种产品与极端冰雹天气的对应关系较为明显,但不是出现极端冰雹天气的必要条件;(3)FY-4A短波红外通道 1.58～1.64 μm,尤其是 2.1～2.35 μm在较强对流天气发生前的 0～1 h内,对大粒子冰晶云团识别具有一定的指示作用,对提高短临预警实效具有一定的指示意义.
Abstract
Under the background of a cold vortex,strong convection weather such as hail with a maximum diame-ter of about 9 cm and a force 10 gale occurred in Ning'an,Mudanjiang,on July 1,2023.Using MICAPS data,radar data and FY-4A data,four types of FY-4A satellite cloud type CLT,cloud phase state CLP,cloud top height CTH and cloud top temperature CTT were selected for availability analysis.The results show that:(1)FY-4A data reception rate,time resolution and timeliness of data reception can support real-time monitoring and early warning services in actual forecast;(2)The four types of products have different performances in the weath-er process,among which CLT and CLP have better availability and can better judge the category of clouds;The corresponding relationship between CTH and CTT products and extreme hail weather is obvious,but it is not necessary for extreme hail weather.(3)FY-4A short-wave infrared channel 1.58～1.64 μm,especially 2.1～2.35 μm within 0～1 h before the occurrence of strong convective weather,has a certain indicative effect on the identi-fication of large particle ice crystal clouds,and has a certain indicative significance for improving the effective-ness of short imminent warning.
关键词
FY-4A卫星/极端冰雹/大粒子/卫星产品Key words
FY-4A satellite/Extreme hail/Large particles/Satellite product引用本文复制引用
出版年
2024
NETL
NSTL
万方数据