Review of research progress and modeling of hydrological processes in the cold regions of the Qinghai-Xizang Plateau
Global warming has triggered significant changes in the cryosphere,manifested in phenomena such as glacier retreat,snowmelt,and permafrost degradation. These transformations accelerate the conversion of sol-id water resources into liquid water,disrupting the long-term stability of water resource allocation in the Qinghai-Xizang Plateau's cold regions. This paper takes the perspective of hydrological effects of cryosphere changes in cold regions,reviewing recent advancements in the understanding of hydrological processes under climate change in the Qinghai-Xizang Plateau. We analyze the current challenges and hotspots in hydrological research specific to the Qinghai-Xizang Plateau. Given that hydrological modeling is a crucial tool for studying the hydro-logical cycle,the structure and functionality of these models significantly influence the accuracy and direction of hydrological research. This paper summarizes the advantages and limitations of hydrological model algorithms for simulating glacier and snowmelt runoff in the plateau cold regions,and the characteristics of glacier,snow,and permafrost modules in 10 typical hydrological models. We also distill the main issues affecting the simula-tion accuracy of hydrological process models in this region. Our findings indicate that the limited availability of meteorological observation stations in the Qinghai-Xizang Plateau contributes to uncertainties in data input and parameter estimation. Moreover,a lack of comprehensive understanding of the intrinsic physical mechanisms governing hydrological processes in the cryosphere results in incomplete model structures,further impacting the simulation accuracy of these hydrological models. Finally,we discuss strategies for enhancing the accuracy of hydrological models through the integrated application of multivariate data and machine learning algorithms in cold regions.
万方数据
维普
