Merging Satellite Products and Rain-Gauge Observations to Improve Hydrological Simulation: A Review

IF 1.6 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Earth Interactions Pub Date : 2022-12-13 DOI:10.3390/earth3040072

Haileyesus Belay, A. Melesse, Getachew Tegegne

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引用次数: 1

Abstract

Improving the quality of atmospheric precipitation measurements is crucial in the view of minimizing the uncertainty in weather forecasting, climate change impact assessment, water resource assessment and management, and drought and flood prediction. Remote sensing technology has considerably improved the spatio-temporal assessment of precipitation. Despite the advancement in the remote sensing technology, there is a need to investigate the robust approach towards integrating ground-based-measured and satellite-product precipitation to better understand the hydrologic process of any basin. Several data-merging methods have been proposed; however, the application of merged precipitation products for hydrological simulation has rarely been investigated. Thus, in this review, technical characteristics including basic assumptions, along with their procedures, are discussed. Moreover, the limitations of eight commonly used merging approaches, (1) Multiple Linear Regression, (2) Residual Inverse Distance Weighting, (3) Linearized Weighting, (4) Inverse Root-Mean-Square Error Weighting, (5) Optimal Interpolation, (6) Random-Forest-Based Merging Procedure, (7) Bayesian Model Averaging, and (8) the Kriging Method, and their advances with respect to hydrological simulation are discussed. Finally, future research directions towards improving data merging approaches are recommended.

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合并卫星产品和雨量计观测以改进水文模拟:综述

为了最大限度地减少天气预报、气候变化影响评估、水资源评估和管理以及干旱和洪水预测中的不确定性，提高大气降水测量的质量至关重要。遥感技术极大地改善了降水的时空评价。尽管遥感技术取得了进步，但仍需要研究将地面测量降水和卫星产品降水结合起来的可靠方法，以便更好地了解任何流域的水文过程。提出了几种数据合并方法;然而，合并降水产品在水文模拟中的应用研究却很少。因此，在本综述中，将讨论包括基本假设在内的技术特征及其程序。此外，还讨论了8种常用的合并方法(1)多元线性回归、(2)残差逆距离加权、(3)线性化加权、(4)均方根误差逆加权、(5)最优插值、(6)基于随机森林的合并过程、(7)贝叶斯模型平均和(8)Kriging方法)的局限性，以及它们在水文模拟中的进展。最后，提出了改进数据合并方法的未来研究方向。

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来源期刊

Earth Interactions 地学-地球科学综合

CiteScore

2.70

自引率

5.00%

发文量

审稿时长

>12 weeks

期刊介绍： Publishes research on the interactions among the atmosphere, hydrosphere, biosphere, cryosphere, and lithosphere, including, but not limited to, research on human impacts, such as land cover change, irrigation, dams/reservoirs, urbanization, pollution, and landslides. Earth Interactions is a joint publication of the American Meteorological Society, American Geophysical Union, and American Association of Geographers.