Research Overview

My research aims to apply mathematical and modeling techniques to analyze large datasets and develop successful quantitative models or statistical algorithms to study stochastic systems such as ocean turbulence, climate, and other stochastic process like financial time series.

I have worked on modeling and developing analytical steps to examining how small-scale ocean eddies (<50km), which are ubiquitous by observations but not resolved in climate models, may strongly affect the global climate including the global heat budget and large-scale ocean circulation. See my paper here.

I have been excited in analyzing big datasets and applying statistical tools to study how atmosphere-ocean-ice interaction plays a key role in the global sea ice budget and its decadal evolution, using satellite and modeling tools. See my paper here.

I have developed simulations and algorithms on studying ocean deep convection and analyzing how it affects the sea-ice budget and the global Meridional Overturning Circulation. These convective events produce key ocean deep water, feed large-scale ocean circulation, and efficiently transport heat, carbon and other tracers. See my papers here and here,

I also implemented quantitative modeling and statistical analysis on mesoscale dynamics such as the turbulent Weddell Gyre and its interaction with Antarctic Circumpolar Current. See my paper here. I also developed statistical algorithms/methodologies to examine the global pattern of mesoscale eddies and its close relationship with Available Potential Energy. See my paper here.

I used modeling and analytical methods to study the mechanism of abrupt climate-change events related to paleoclimate. See my paper here.

I have improved the statistical model and strategies for retrieving greenhouse gases, using remote sensing and radiative transfer theory. See my papers here and here.

Animations of my research

This movie shows the surface relative vorticity around the Gulf Stream (using a 1/48º model run by NASA/AMES. See my paper here). There are energetic eddies at scales smaller than 50km over the global ocean, which are not resolved in climate models. I am currently studying the impacts of these small eddies on the global climate, e.g., by the vertical transports of physical and biogeochemical tracers, and powering the large-scale ocean circulation by upscale energy cascade.

See below for another movie for the Southern Ocean case (animations by Zhan Su).