Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder

Therese T. Ladwig

Research Interests

Storm Scale Data Assimilation

Ensemble Data Assimilation and Forecasting

Severe Weather

Current Research

I'm a member of the Rapid Refresh (RAP) and High-Resolution Rapid Refresh (HRRR) model and data assimilation team at GSL, which develops and transitions these systems to operations.  I lead the science and development of a hybrid variational-ensemble cloud assimilation in GSI.  I'm also involved with the development of storm-scale ensemble data assimilation for the HRRR Ensemble (HRRRE).  I'm proud that I contribute to an analysis and forecast system that is used by NWS forecasters, the aviation industry, and for renewable energy applications.  I am passionate about extreme weather and enjoy chasing tornadoes, white water kayaking, snow skiing, mountain hiking, and dancing in the rain.


Terra Ladwig, a scientist with NOAA's Global Systems Laboratory in Boulder Colo., evaluates a forecast in the National Severe Storms Lab Hazardous Weather Testbed in Norman, Okla. as part of a collaborative research effort to improve severe weather forecasts. Credit: NOAA

Honors and Awards

  • 2015 Governor's Award for High Impact Research (group award)
  • 2016 CIRES Gold Medal Award (group award)
  • 2017 CIRES Technology Transfer Award (group award)
  • 2016 DSRC Outreach Gold Star
  • 2018 Technology Transfer Award (group award)

View Publications

  • Hu, M, SG Benjamin, TT Ladwig, DC Dowell, SS Weygandt, CR Alexander and JS Whitaker. (OCT 2017). GSI Three-Dimensional Ensemble-Variational Hybrid Data Assimilation Using a Global Ensemble for the Regional Rapid Refresh Model. MONTHLY WEATHER REVIEW, 145(10), 4205-4225. 10.1175/MWR-D-16-0418.1