TY - JOUR

T1 - Dependence of rainfall-runoff model transferability on climate conditions in Iran

AU - Jahanshahi, Afshin

AU - Ghazanchaei, Zohreh

AU - Navari, Mahdi

AU - Goharian, Erfan

AU - Patil, Sopan

AU - Zhang, Yongqiang

PY - 2022/3/12

Y1 - 2022/3/12

N2 - This study investigates the potential differences between spatial and temporal transferability of the HBV rainfall-runoff model parameters in 576 Iranian catchments. Our goal is to determine how parameter transferability is affected by (a) parameter transfer modes (temporal or spatial) and (b) different climate conditions. In the temporal mode, we decide in each catchment based on a benchmark baseline that accounts for the seasonality of flows. In the spatial mode, we examine physical similarity and spatial proximity methods. The main conclusions are that: (1) the HBV model struggles to beat the benchmark in lowland catchments, (2) under stationary conditions, rainfall-runoff models have greater temporal transferability than spatial transferability, (3) under non-stationary climate conditions, the number of catchments that perform best in terms of temporal transferability is smaller than in stationary climate conditions, and (4) the rainfall-runoff model has better transferability from drier to wetter conditions.

AB - This study investigates the potential differences between spatial and temporal transferability of the HBV rainfall-runoff model parameters in 576 Iranian catchments. Our goal is to determine how parameter transferability is affected by (a) parameter transfer modes (temporal or spatial) and (b) different climate conditions. In the temporal mode, we decide in each catchment based on a benchmark baseline that accounts for the seasonality of flows. In the spatial mode, we examine physical similarity and spatial proximity methods. The main conclusions are that: (1) the HBV model struggles to beat the benchmark in lowland catchments, (2) under stationary conditions, rainfall-runoff models have greater temporal transferability than spatial transferability, (3) under non-stationary climate conditions, the number of catchments that perform best in terms of temporal transferability is smaller than in stationary climate conditions, and (4) the rainfall-runoff model has better transferability from drier to wetter conditions.

KW - benchmark baseline

KW - rainfall-runoff model

KW - spatial and temporal transferability

U2 - 10.1080/02626667.2022.2030867

DO - 10.1080/02626667.2022.2030867

M3 - Article

VL - 67

SP - 564

EP - 587

JO - Hydrological Sciences Journal

JF - Hydrological Sciences Journal

SN - 2150-335

IS - 4

ER -