Data Science for Social Impact
Artificial intelligence (AI) and big data are bringing innovations to many research fields that have a direct social impact. In this talk, I’d like to share recent efforts on research […]
Category Archives: Seminar
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The Structure of Climate Variability Across Scales
One of the most intriguing facets of the climate system is that it exhibits variability across all temporal and spatial scales; pronounced examples are temperature and precipitation. The structure of […]
Multidecadal variability of North Atlantic climate
Multidecadal variations in North Atlantic sea surface temperatures are linked to areas far beyond that region, via atmospheric teleconnections. We take advantage of one such linkage, to reconstruct multi-decadal variations […]
Revisiting the Mid-Pleistocene Transition
Present descriptions of Quaternary climate assert that after major Northern Hemisphere ice sheets first appeared three million years ago, a steady rhythm of obliquity-driven, 40-ky glacial cycles dominated global climate […]
Modeling Human Dispersal
The genus homo started about 3-2.5 million years ago – likely in the savannas of Eastern Africa. Over the following 2 million years further speciation events occurred and some groups, […]
History of the Development of Numerical Models of the Ocean
In the early 1950’s John von Neumann and Jules Charney carried out the first successful numerical weather forecasts at the Institute of Advanced Study at Princeton. The United States Weather […]
Precipitation Patterns in Korea through the Geostatistical Analysis and the Principal Component Analysis
Most precipitation systems in Korea are highly influenced by the East Asian summer monsoon (Changma) as well as by synoptic scale/mesoscale weather phenomena, and hence have high seasonal variation; they […]
Reducing Uncertainties in Land Surface Modeling through Parameterization Scheme Development and Optimal Parameter Estimation
Land surface is the interface between atmosphere and land, which is composed of various soils, vegetations, surface water bodies, snow/ice etc.; thus, it represents various components of the Earth’s environment/climate […]
Improving Regional Climate/Weather/Environment Prediction: Coupled Modeling, Parameter Optimization and Data Assimilation
Numerical prediction of climate/weather/environment is an important tool for adequate policy making in an era of changing climate. It basically requires a coupled modeling system, and its performance can be […]
Cold-season Arctic amplification driven by Arctic Ocean-mediated seasonal energy transfer
During recent decades, the Arctic has been warming at a much faster rate than the global average. Interestingly, this accelerated warming in response to greenhouse gas forcing is most pronounced […]