在东亚大洋上对多卫星气溶光学深度产品的评估和比较
Zhaoxiang Cao1, Kuifeng Luan1,2, Peng Zhou3,4
1College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China.
Toxics
|October 27, 2023
概括
卫星气溶光学深度 (AOD) 数据的准确性在东亚大洋不同. VIIRS和MISR通常优于MODIS,对于精确的大气气溶研究,需要注意特定的区域优势和季节性变化.
科学领域:
- 大气科学 大气科学
- 遥感 遥感 遥感 遥感
- 海洋学 海洋学 海洋学
背景情况:
- 大气中的气溶在海洋上空对气候变化,污染和海洋生态系统研究至关重要.
- 卫星遥感对于测量海洋气溶光学特性至关重要.
研究的目的:
- 综合评估和比较6个卫星气溶光学深度 (AOD) 产品在东亚海洋的准确性.
- 确定最可靠的卫星AOD数据用于大气气溶及其影响的研究.
主要方法:
- 使用AERONET (气溶机器人网络) 站作为验证的基准数据.
- 从2013年到2020年,评估了MODIS,VIIRS,MISR,OMAERO,OMAERUV和CALIPSO的AOD数据,这些数据来自2013年至2020年的时间段.
- 根据相关系数 (R),预期误差 (EE),根平均平方误差 (RMSE) 和中位偏差 (MB) 分析数据.
主要成果:
- 在东中国海,VIIRS的准确性通常高于MODIS,在春季的性能达到顶峰.
- MISR显示出更高的EE,但系统地低估;CALIPSO显示出低估,除了小的AOD范围.
- 区域准确性各不相同:VIIRS在南中国海表现出色,而MISR在博海-黄海,东中国海,日本海和西太平洋地区表现最好.
结论:
- 卫星AOD产品的准确性在东亚大洋有很大差异,受地区和季节的影响.
- 由于陆地污染,沿海地区的AOD较高,而离岸地区的海洋气溶更清洁.
- 结果指导研究人员选择最佳的卫星AOD数据来研究气溶的影响和趋势.
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