Local and Remote Drivers of Asian Dust Emission

Prof. Xin Xi, Michigan Technological University
EVS Seminar Graphic

Dust emission is the least observationally constrained component in the dust aerosol life cycle, and represents a major source of model discrepancy and biases in predicting the dust response to and interaction with the changing climate. In this talk I will first present an analysis of the diverging relative importance of wind versus hydroclimate variables among CMIP6 models. Next, I will present a case study of the large-scale dynamics associated with recent extreme dust storms in Central Asia, particularly the role of atmospheric blocking in the Euro-Atlantic sector. Finally, I will discuss an ongoing effort in developing a ground-based dust-climate data record (DCDR) and initial results on characterizing the dust emission dynamics in Asia.