Evapo-transpiration estimation over the river basin of the Loess Plateau of China based on remote sensing

Kimura, Reiji; Bai, Leichao; Fan, Jun; Takayama, Nobuki; Hinokidani, Osamu

doi:10.1016/j.jaridenv.2006.03.029

Cited by 49 publications

(23 citation statements)

References 21 publications

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“…In this study, the coldest pixel is of surface temperature 291Ð3 K and 288Ð0 K for DOY 174 and DOY 206, respectively, for forest with very high vegetation cover. And the warmest pixel is of surface temperature 314Ð7 K and 312Ð5 K for DOY 174 and DOY 206, respectively, for sandy land, with roughness length for momentum transfer of 0Ð01 m. The model corrects the friction velocity and aerodynamic resistance for unstable conditions on the basis of MoninObukhov similarity hypothesis using the iterative method (Bastiaanssen et al, 1998a;Bastiaanssen, 2000;Kimura et al, 2007).…”

Section: Model Differencesmentioning

confidence: 99%

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Intercomparison of remote sensing‐based models for estimation of evapotranspiration and accuracy assessment based on SWAT

Gao

Long

2008

Hydrological Processes

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Abstract:An intercomparison of daily actual evapotranspiration (ET) estimates from the single-source models (SEBAL and SEBS) and the two-source models (P-TSEB and S-TSEB) using remotely sensed data was performed to examine their utilities and limitations under a wide range of land covers and different meteorological conditions. The accuracy of ET estimates from remote sensing-based models of a selected watershed on 23 June 2005 (DOY 174) presenting large air drying power and marked contrast in underlying surface characteristics, and 25 July 2005, (DOY 206) in contrast to the meteorological and underlying surface conditions of DOY 174, were evaluated in terms of SWAT-based ET. The ET estimates from the two methodologies are shown to be comparable, indicating that S-TSEB has the highest accuracy with relative errors of 2Ð2% and 5Ð6% with reference to SWAT-based ET for DOY 174 and 206, respectively. Hence it was selected to be the basis for performing an intercomparison with other remote sensing-based models. Single-source models are very sensitive to KB 1 parameter, rendering marked differences in ET estimates because of different treatments of roughness length for heat transfer. SEBAL and SEBS yielded mean absolute percentage difference (MAPD) versus S-TSEB within 26Ð22% and 26Ð56% for DOY 174 and within 9Ð11% and 11Ð69% for DOY 206, respectively, indicating their applicability to higher vegetation cover and soil moisture availability areas under small air drying power condition. P-TSEB generated MAPD versus S-TSEB within 41Ð15% for DOY 174 and 8Ð79% for DOY 206, implying that P-TSEB is highly consistent with S-TSEB under small air drying power and less contrast in soil moisture conditions, whereas noticeable discrepancies occur under large air drying power and marked contrast in soil moisture circumstances, in particular for sparse cover. The performance of P-TSEB largely depends on the meteorological and underlying surface conditions, both exerting significant influences on the extent of coupling between vegetation and soil.

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Section: Model Differencesmentioning

confidence: 99%

“…where h c is the vegetation height (m), which could be specified by establishing the empirical relationship between the vegetation index and h c from field campaigns (Kimura et al, 2007). In SEBS, an algorithm permits one to determine the roughness length for heat transfer.…”

Section: Model Differencesmentioning

confidence: 99%

Intercomparison of remote sensing‐based models for estimation of evapotranspiration and accuracy assessment based on SWAT

Gao

Long

2008

Hydrological Processes

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“…However, only preliminary studies on the land-surface moisture processes and water balance of the semi-arid Loess Plateau have been conducted (Kimura et al 2006;Xie et al 2006;Kimura et al 2007). Most studies have focused on understanding the variation in soil moisture and land-surface evapotranspiration (Jacobs 1994;Jacobs and Verhoef 1997;Mohamed et al 2004;Zhu et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Dew Formation and Distribution, and Its Contribution to the Surface Water Budget in a Semi-arid Region in China

Qiang

Wang²,

Yang³

et al. 2014

Boundary-Layer Meteorol

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Observations in the semi-arid Loess Plateau area of north-west China are utilized to reveal the characteristics and variations in the seasonal distribution of dewfall (frost) and the influence of micrometeorology, precipitation, and other weather conditions. Precipitation is the dominant water source in the Loess Plateau; however, non-rainfall water accounts for 13 % of the total land-surface water source. Dew is the second largest non-rainfall component next only to soil adsorption water. Observations show that dew (frost) occurrence is likely to occur when an inversion occurs between the heights of 1 and 4 m with a temperature difference of 0.25 K, surface wind speed of 1.5 m s −1 , and surface relative humidity greater than 80 %.

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“…Wang et al (2008a) reported that soil desiccation is a serious problem for loess soils in areas with natural or reestablished native vegetation. Kimura et al (2007) suggested that shifting from rain-fed farmland or shrub land into grassland was necessary to prevent soil erosion and return to a sustainable soil water storage regime. This suggestion was based on the high water use efficiency (WUE) of grassland, derived from remote sensing estimates of evapotranspiration over the Loess Plateau river basin.…”

Section: Introductionmentioning

confidence: 99%

Toward sustainable soil and water resources use in China's highly erodible semi-arid loess plateau

et al. 2010

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Evapo-transpiration estimation over the river basin of the Loess Plateau of China based on remote sensing

Cited by 49 publications

References 21 publications

Intercomparison of remote sensing‐based models for estimation of evapotranspiration and accuracy assessment based on SWAT

Intercomparison of remote sensing‐based models for estimation of evapotranspiration and accuracy assessment based on SWAT

Characteristics of Dew Formation and Distribution, and Its Contribution to the Surface Water Budget in a Semi-arid Region in China

Toward sustainable soil and water resources use in China's highly erodible semi-arid loess plateau

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