通过在现场,卫星和水力动力学建模,推进我们对过渡环境中的地表水温度动态的理解
Nagendra Jaiganesh Sankara Narayanan1, Debora Bellafiore2, Francesca De Pascalis2
1Earth and Planetary Observation Sciences (EPOS), Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom FK9 4LA.
ACS ES&T water
|December 18, 2025
概括
在过渡水域监测地表水温是复杂的. 结合水力动力学建模 (SHYFEM) 和卫星数据 (TACT) 的新综合产品为沿海管理提供了更高的准确性.
科学领域:
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
- 遥感 遥感 遥感 遥感
背景情况:
- 由于复杂的自然和人为影响,沿海湖等过渡性环境对地表水温 (SWT) 监测具有独特的挑战.
- 准确的SWT数据对于了解沿海生态系统动态和告知管理策略至关重要.
研究的目的:
- 评估四种不同的地表水温 (SWT) 产品在捕获威尼斯湖内的温度动态方面的性能.
- 为复杂的沿海系统确定最准确,最可靠的SWT监测方法.
主要方法:
- 四个SWT产品的比较:SHYFEM (水力动力学有限元模块系统) 模型输出,ESA CCI (欧洲航天局气候变化倡议) 卫星数据,Landsat 8 2级和Landsat 8 1级处理 TACT (热大气校正工具).
- 对产品与现场观测进行验证,以评估偏差和根平均平方误差 (RMSE).
主要成果:
- 与其他产品相比,SHYFEM和TACT表现出优越的性能,偏差较低 (-0.48 °C和 -0.30 °C) 和RMSE (∼1.2 °C).
- SHYFEM准确地捕捉了季节性SWT趋势,并提供了广泛的时间覆盖.
- 塔克特在识别局部热异常方面表现出色,例如工业排放的热异常.
结论:
- 结合SHYFEM和TACT的综合SWT产品提供了更准确和更全面的跨界水域热动态的时空表现.
- 这种可转移的框架增强了对沿海热变量的理解,并可以支持有效的生态系统管理和气候适应计划.
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