Abstract
The Tibetan Plateau(TP)exerts a profound influence on global climate over million-year timescales due to its past uplift.However,whether the ongoing climate changes over the TP,particularly the persistent reduction in its local albedo(referred to as"TP surface darkening"),can exert global impacts remains elu-sive.In this study,a state-of-the-art coupled land-atmosphere global climate model has been employed to scrutinize the impact of TP darkening on polar climate changes.Results indicate that the projected TP darkening has the potential to generate a stationary Rossby wave train,thereby modulating the atmo-spheric circulation in the high-latitudes of the Northern Hemisphere and instigating a dipole-like surface air temperature anomaly pattern around the Arctic region.An additional experiment suggests that the projected Arctic warming may in return warm the TP,thus forming a bi-directional linkage between these two climate systems.Given their association with vast ice reservoirs,the elucidation of this mech-anism in our study is crucial in advancing our comprehension of Earth system climate projections.
基金项目
Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0208)
National Natural Science Foundation of China(41988101)
Xplorer Prize()
NETL
NSTL
万方数据