I am a climate dynamicist with broad interests in the diagnosis, modeling, prediction, and potential predictability of large-scale weather and climate variations around the globe on time scales of days to centuries. Our team is engaged in documenting and understanding the regional aspects of ongoing climate changes, especially changes in the statistics of extreme weather, and determining to what extent they are anthropogenic or consistent with natural climate variability. We are also interested in documenting and understanding the actual and potential skill of weather and climate predictions, which is inherently limited due to the chaotic nature of the system, and how current prediction systems need to be improved to achieve the potential skill.