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Climate Variability and Change Analysis

Our Climate Variability and Change Analysis Group analyzes data on daily to multi-decadal atmospheric variations measured by many types of observing systems. Our specialty is working with radiosonde (weather balloon) data. Through our radiosonde research, we have identified important data problems and produced new, improved datasets. We use these and other datasets to identify and characterize climate variability and trends. We also work collaboratively with climate modeling groups who use our datasets to evaluate global climate models.

Researcher	Primary Research Interests	Other Interests
Jim Angell	Climate Variability and Change Upper-Air Temperature and Ozone Trends Urban Boundary Layer Flows (Tetroons)	Volcanic Effects on Climate North Pole Vortex
Melissa Free	Climate Variability and Change Volcanic Effects on Climate Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC)	Ozone Trends Changes in Cloud Cover
Dian Seidel	Climate Variability and Change GCOS Reference Upper Air Network (GRUAN) Climatology of the Planetary Boundary Layer Vertical Profile of Temperature Trends	Tropopause Studies Geoengineering Science and Environmental Education American Meteorological Society
Julian Wang	Regional Climate Modeling	Transition of Research to Operations International Research Agreements
Yehui (Ally) Zhang	Climate Variability and Change NRC Postdoctoral Research Associate Climatology of Stable Planetary Boundary Layer	Temperature Trends in the Lower Atmosphere Gravity Waves in the Troposphere Tropopause Studies
James Wang	Climate Variability and Change NRC Senior Research Associate Climate Trends at the Tropical Tropopause Radiosonde and Satellite GPS Radio Occultation Observations	Atmospheric Methane Modeling and Trends Global Nitrogen Cycle Wastewater Pollution Reduction Greenhouse Gas Emissions Reduction Targets Geoengineering