Simulation of Hydrologic Change of Linggo Co during 1979–2012 Using Hydrologic and Isotopic Mass Balance Model

The Tibetan Plateau (TP) and surrounding areas contain the largest number of glaciers outside polar regions. region affects downstream water supply food security, thereby directly influencing one-third world’s population. lakes in central TP expanded rapidly recent decades, which has attracted growing attention. Glacier meltwater was considered as a major component balance lakes, although few studies quantified its contribution. Stable isotope analysis is powerful tool to trace hydrologic circulation, while interpretation paleoclimate records been controversial. To bridge gap between paleoclimatic studies, we performed isotopic mass model simulate lake level change Linggo Co TP. forced by meteorological data, calibrated through observed changes, validated oxygen compositions (δ18O) water. Our results indicated that glacier contributed 73.94% inflow before 1993 but decreased thereafter. Increasing together with positive (precipitation/evaporation) catchment rapid expansion after mid-1990s. Lake δ18O more sensitive changes precipitation amount than temperature. findings could shed light on usage proxy future research