对流初生

对流初生（Convective Initiation，CI）指卫星云图上对应多普勒天气雷达第一次检测到由对流云产生的反射率因子 ≥35 dBz 的像元。CI的产生主要表现为云体厚度增加、云顶温度急剧下降以及云顶相态变化等。主要采用RDT算法检测对流初生和快速发展的对流云。葵花8号卫星的对流初生产品，时间频率10分钟，空间分辨率2km。

Convective Initiation (CI) refers to the pixels on satellite imagery where Doppler weather radar first detects reflectivity factor ≥35 dBz generated by convective clouds. The occurrence of CI is mainly characterized by increases in cloud thickness, sharp drops in cloud-top temperature, and changes in cloud-top phase, etc. Convective initiation and rapidly developing convective clouds are mainly detected using the RDT algorithm. The convective initiation product from the Himawari-8 satellite has a temporal resolution of 10 minutes and a spatial resolution of 2 km.

搜集汇总

背景与挑战

背景概述

对流初生数据集通过葵花8号卫星提供，采用RDT算法检测对流初生和快速发展的对流云，时间频率为10分钟，空间分辨率为2km。该数据集主要用于监测云体厚度、云顶温度等变化，适用于气象研究和应用。