The Budyko shape parameter as a descriptive index for streamflow loss

被引：3

作者：

Tran, Hoang ^{[1
,2
]}

Yang, Chen ^{[1
,2
]}

Condon, Laura E. ^{[3
]}

Maxwell, Reed M. ^{[1
,2
,4
]}

机构：

[1] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08540 USA

[2] Princeton Univ, Integrated GroundWater Modeling Ctr, Princeton, NJ 08544 USA

[3] Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA

[4] Princeton Univ, High Meadows Environm Inst, Princeton, NJ 08544 USA

来源：

FRONTIERS IN WATER | 2023年 / 5卷

关键词：

Budyko analysis; drought; Upper Colorado River Basin; integrated modeling approach; large scale analysis; MEAN ANNUAL EVAPOTRANSPIRATION; COLORADO RIVER; CLIMATE-CHANGE; WATER-BALANCE; GROUNDWATER-FLOW; STORAGE; RESOURCES; HYDROLOGY; BASIN; SNOW;

D O I：

10.3389/frwa.2023.1258367

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Increases in evapotranspiration (ET) from global warming are decreasing streamflow in headwater basins worldwide. However, these streamflow losses do not occur uniformly due to complex topography. To better understand the heterogeneity of streamflow loss, we use the Budyko shape parameter (omega) as a diagnostic tool. We fit omega to 37-year of hydrologic simulation output in the Upper Colorado River Basin (UCRB), an important headwater basin in the US. We split the UCRB into two categories: peak watersheds with high elevation and steep slopes, and valley watersheds with lower elevation and gradual slopes. Our results demonstrate a relationship between streamflow loss and omega. The valley watersheds with greater streamflow loss have omega higher than 3.1, while the peak watersheds with less streamflow loss have an average omega of 1.3. This work highlights the use of omega as an indicator of streamflow loss and could be generalized to other headwater basin systems.

引用

页数：9

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