摘要
像素扭曲反映卫星图像上的像素点面积和形状随地面位置的变化。像素扭曲值、星下点位置和分辨率决定卫星探测对流尺度天气现象的能力。对于位于105°E、星下点分辨率为2km的静止卫星成像仪,它的有效对流观测范围可覆盖几乎整个中国区域。
Pixel distortion reflects a change of the area and shape of the pixel observed by a geostationary imager with the location of the earth.The ability of detecting convective-scale weather phenomenon is determined by the pixel distortion,the location of the sub-satellite point and the pixel size at the sub-satellite point.If a geostationary meteorological satellite is positioned at105°E with a2-km sub-satellite resolution,its convective-scale-appropriate observing domain may cover almost the entire China..
作者
诸葛小勇
邹晓蕾
王元
Zhuge Xiaoyong;Zou Xiaolei;Wang Yuan(Key Laboratory of Mesoscale Severe Weather of Ministry of Education, Nanjing University, Nanjing 210023;Earth System Science Interdisciplinary Center, University of Maryland at College Park, USA)
出处
《气象科技进展》
2018年第1期7-11,共5页
Advances in Meteorological Science and Technology
基金
国家自然科学基金青年科学基金项目(41505086)
关键词
像素扭曲
有效对流观测范围
静止气象卫星
pixel distortion
convective-scale-appropriate observing domain
geostationary meteorological satellite
