ABSTRACT This work presents a practical approach to reconstructing past and present discharge and water depth time series for operational monitoring of small-sized ungauged watersheds using remotely sensed and freely accessible datasets in conjunction with hydrological models. The methodology was applied to the Tsiribihina watershed in Madagascar. Mostly, satellite data are used, such as water levels from satellite altimetry missions and rainfall from the African Rainfall Climatology 2 product. In contrast, the Modelo de Grandes Bacias is calibrated using historical discharge measurements to simulate distributed discharge in the basin. Rating curves are computed by crossing the altimetry information of water height with the simulated discharge outputs. These rating curves enable the conversion of water levels, discharge and depth interchangeably. Present-day discharge and depth can thus be estimated in near real time with any update of satellite rainfall data and/or water level gained by altimetry missions currently flying in operational mode.

中文翻译：

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通过结合遥感和水文建模重新启动小型未测量流域的深度流量监测：马达加斯加的案例研究

摘要 这项工作提出了一种实用的方法来重建过去和现在的流量和水深时间序列，以便使用遥感和可自由访问的数据集结合水文模型对小型未测量流域进行操作监测。该方法应用于马达加斯加的 Tsiribihina 流域。大多数情况下，使用卫星数据，例如来自卫星测高任务的水位和来自非洲降雨气候学 2 产品的降雨量。相比之下，Modelo de Grandes Bacias 使用历史流量测量进行校准，以模拟盆地中的分布式流量。额定曲线是通过将水高度的测高信息与模拟的排放输出相交来计算的。这些额定曲线使水位、流量和深度可以互换转换。