云地球静止气象卫星的运营应用,用于云观测产品
Mingbin Du1,2, Shuang Luo3, Jun Shi3
1Shanghai Ecological Forecasting and Remote Sensing Center, Shanghai Meteorological Service, Shanghai, 200030, China. nyicer@hotmail.com.
Scientific reports
|August 2, 2024
概括
地静止卫星云产品对于中国的气象观测系统至关重要. 这项研究发现,来自卫星的云量和类型与地面的SYNOP观测有很大不同.
科学领域:
- 气象学 天气学
- 遥感 遥感 遥感 遥感
- 卫星气候学 卫星气候学
背景情况:
- 地静止卫星云产品是中国表面同光云观测 (SYNOP) 的重要替代品.
- 这些卫星产品构成了中国气象局 (CMA) 综合气象观测质量管理系统 (QMS) 的基线.
研究的目的:
- 评估云总量和从静态卫星数据中获得的分类.
- 将基于卫星的云产品与表面的SYNOP观测进行比较,以便在CMA内进行运营改革.
- 评估辅助温度配置文件对云的分类准确性的影响.
主要方法:
- 利用2012年Fengyun-2E (FY-2E) 地静止卫星的实时观测结果.
- 通过两种不同的方法来推导云总量和分类.
- 将卫星数据与地表SYNOP观测数据进行比较.
主要成果:
- FY-2E卫星估计的云总量明显低于SYNOP观测,平均约比30%低.
- 从两个卫星方法获得的云的分类显示出与地面观测相比存在很大差异 (22-32%).
- 采用辅助温度配置文件的分类方法与表面观测的差异较小.
结论:
- 地静止卫星云产品需要对地面观测进行仔细的验证,以便在操作中使用.
- 云总量和分类的差异凸显了改进卫星数据处理算法的必要性.
- 温度配置文件的整合可以提高基于卫星的云层分类的准确性.
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