GRACEfully closing the water balance: a data-driven probabilistic approach applied to river basins in Iran

Abstract

The increasing availability and accuracy of remote sensing data of the terrestrial water cycle holds great promise for calibration and validation of large-scale hydrological models. Several modeling studies have already taken advantage of these data for evaluating and constraining hydrological models, including water storage data from GRACE satellites

Can Indirect Evaluation Methods and Their Fusion Products Reduce Uncertainty in Actual Evapotranspiration Estimates?

“…However, it is worth noting that the ET wb of some basins has a negative value in some months, which is probably due to the uncertainty in Δ S derived from GRACE (Rodell et al., 2011; Schoups & Nasseri, 2021). Although this study adopts the difference between the catchment water storage anomalies of two adjacent months to represent the Δ S on the monthly scale, it is uncertain whether this difference can reflect the Δ S well, especially considering the influence of geographical location, shape, characteristics of hydrological signals in and surrounding the basin, and also GRACE noise characteristics (Longuevergne et al., 2010; Vishwakarma et al., 2018), etc.…”

Evaluation of remotely sensed global evapotranspiration data from inland river basins

“…The observational WB method is a basic approach used to produce ET data series and is usually considered as reference for evaluating ET products at the basin scales (Bai & Liu, 2018; Baker et al, 2021; Koppa et al, 2021; Li et al, 2019; Schoups & Nasseri, 2021). Some studies have evaluated ET products on an annual scale to ignore the variation in water storage (Koppa et al, 2021; Xu et al, 2019).…”

“…Some studies have evaluated ET products on an annual scale to ignore the variation in water storage (Koppa et al, 2021; Xu et al, 2019). Satellite remote sensing, particularly the gravity recovery and climate experiment (GRACE) mission, can accurately estimate monthly total water storage changes in basins that are larger than ~200 000 and 100 000 km 2 at low and high latitudes, respectively (Rodell et al, 2018), thereby enabling the evaluation of ET products on a monthly scale (Bai & Liu, 2018; Baker et al, 2021; Chao et al, 2021; Li et al, 2019; Schoups & Nasseri, 2021). In generally, previous research has largely evaluated ET products in exorheic basins by the WB method and requires runoff data, which is not easy to obtain in inland basins.…”

Causes of changes in actual evapotranspiration and terrestrial water storage over the Eurasian inland basins

“…The hydrologic budget (i.e., hydrologic gains and losses) is an effective method for conducting analyses at the basin scale (Liu et al, 2014(Liu et al, , 2016(Liu et al, , 2018Reager et al, 2016). It is a basic approach used to produce ET data series and is usually considered as a reference for evaluating model or remote sensing ET products at the basin scale (Jiang & Liu, 2021;Liu et al, 2016;Schoups & Nasseri, 2021). Unlike exorheic basins, which include AET and runoff in hydrologic losses, inland basins only include AET.…”