Abstract:
The polar ice sheets are a large store of freshwater in the global climate system.The Ant arctic and Greenland lce Sheets have an approximate water equivalent of 57m and 7 m of sea-level rise potential, respectively.Surface melt is a sensitive climate indicator that plays an important role in the energy and mass balance of the ice sheets and the dynamics of sea level and ocean circulation.However at present it is still challenging to describe the detailed melt patterns and to quantitatively estimate surface melt flux over the ice sheets.This talk will introduce the elaborate mapping of surface melt from space-borne microwave observations,and the estimation of daily melt flux from a remote sensing per spective beyond traditional regional climate models. By highlighting the links between ice sheet surface melt conditions and atmospheric circulation anomaliesthe talk will show the mechanisms for extreme melt events at multi-scales.
This work has been published:1)https://doiorg/101016/j.rse2020.111835
2) https://doiorg/10.1175/JCLI-D-21-0265.13)https://doiorg/101029/2021g1096690
Short-bio:
Lei Zheng received the Ph.D. degree in photogrammetry and remote sensing from Wuhan University,China.He is currently a postdoc researcher with Sun Yat-sen University. China.He has authored or co-authored more than 30 publications in peer-reviewed jour nals. His research interests include remote sensing ofsnow and iceand surface dynamics modeling in cold regions, with a focus on the melting processes and climate variability in the cryosphere.He has hosted several projects funded bythe National Natural Science Foundation ofChina(NSFC)and China Postdoctoral Science Foundation He has partici pated in scientific expeditions in the Antarctic and Qinghai-Tibet Plateau
