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9 cm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1.58~1.64μm,尤其是2.1~2.35μm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。
Under the background of a cold vortex,strong convection weather such as hail with a maximum diameter 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 weather 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 1.58~1.64μm,especially 2.1~2.35μm within 0~1 h before the occurrence of strong convective weather,has a certain indicative effect on the identification of large particle ice crystal clouds,and has a certain indicative significance for improving the effectiveness of short imminent warning.
作者
白玉兰
刘刚
周鑫
刘冠鹏
杨丹
BAI Yu-lan;LIU Gang;ZHOU Xin;LIU Guan-peng;YANG Dan(Hegang Meteorological Bureau,Heilongjiang Hegang 154107;Meteorological observatory of Heilongjiang province,Heilongjiang Harbin 150030;Mudanjiang Meteorological Bureau,Heilongjiang Mudanjiang 157000)
出处
《黑龙江气象》
2024年第3期9-12,33,共5页
Heilongjiang Meteorology
