Detection of Polar Mesospheric Clouds Utilizing Himawari‐8/AHI Full‐Disk Images
Detection of Polar Mesospheric Clouds Utilizing Himawari‐8/AHI Full‐Disk Images
复制标题
利用 Himawari-8/AHI 全盘图像探测极地中层云
DOI：
10.1029/2021ea002076
复制
发表时间：
2021
影响因子：
3.1
通讯作者：
Nielsen K.
中科院分区：
文献类型：
--
作者：
Tsuda T. T.;Hozumi Y.;Kawaura K.;Tatsuzawa K.;Ando Y.;Hosokawa K.;Suzuki H.;Murata K. T.;Nakamura T.;Yue J.;Nielsen K.
为了提高日本地球静止轨道（GEO）气象卫星Himawari-8上搭载的高级Himawari成像仪（AHI）对极地中层云（PMC）的检测能力，开发了一种适用于Himawari-8的新型两步PMC检测技术/AHI全磁盘图像。两步方法将PMC检测分为较强（第一步）和较弱（第二步）信号，并增强检测能力，同时显著降低错误PMC检测。Himawari‐8/AHI改进的PMC灵敏度与中间层冰的高层大气学（AIM）卫星上的云成像和颗粒大小（CIPS）相当。有了这个令人鼓舞的结果，Himawari‐8/AHI的PMC观测为高层大气物理学和空间科学界提供了额外的广泛数据集。
With the objective of advancing the polar mesospheric cloud (PMC) detection capability by the Advanced Himawari Imager (AHI) onboard the Japanese geostationary‐Earth‐orbit (GEO) meteorological satellite Himawari‐8, a novel two‐step PMC detection technique applied to the Himawari‐8/AHI full‐disk images has been developed. The two‐step approach is dividing the PMC detection into stronger (the first step) and weaker (the second step) signals and enhances the detection capability while significantly decreasing the false PMC detections. The improved PMC sensitivity by Himawari‐8/AHI is comparable with the Cloud Imaging and Particle Size (CIPS) onboard the Aeronomy of Ice in the Mesosphere (AIM) satellite. With this encouraging result, PMC observations from Himawari‐8/AHI provide an additional extensive data set to the aeronomy and space science community.