河口SAT数据库 开发统一的海和河口系统的远程传感和水质数据
Steven A Rego1, Naomi E Detenbeck1, Xiao Shen2
1Office of Research and Development, U.S. Environmental Protection Agency, Narragansett, RI 02882, USA.
Water
|November 6, 2024
概括
EstuarySAT是一个新的数据库,结合了遥感数据和美国沿海水域的水质记录. 该资源有助于理解和预测河口和淡水系统中的藻类繁殖.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 水质监测 水质监测
背景情况:
- 准确评估水质需要广泛的历史数据集.
- 遥感可以同时,频繁地对众多水体进行调查.
- 现有的数据库往往缺乏对较小的沿海和河口系统的全面数据.
研究的目的:
- 开发一个统一的数据库 (EstuarySAT),整合美国沿海的遥感图像和水质数据.
- 为了填补较小的沿海河口和淡水潮河流系统的数据缺口.
- 改进远程传感算法和了解导致花的机制.
主要方法:
- 利用了Sentinel-2多谱仪器 (MSI) 数据和公开的水质记录 (1984-2021年).
- 使用的开源工具:R,Python和谷歌地球引擎 (GEE).
- 空间匹配 Sentinel-2 图像 (2015-2021) 与 23 个水质数据源,创建了 299,851 个观测.
主要成果:
- 开发了EstuarySAT数据库,覆盖美国沿海地区,空间分辨率 (10m) 和回访频率 (5-10天) 比以前的平台高.
- 纳入了叶绿素数据作为主要重点,以及辅助数据,如温度,盐度,pH值,溶氧,溶有机碳和度.
- 数据库包含典型的CDOM主导的沿海系统的光谱概况.
结论:
- 河口SAT为研究人员和环境管理人员研究沿海水质提供了宝贵的资源.
- 该数据库支持评估藻类繁殖的原因,并预测未来的繁殖情况.
- 河口SAT增强了遥感的实用性,用于监测较小,复杂的水生系统.
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