The NASA-Unified Weather Research and Forecasting (NU-WRF) model is an observation-driven regional earth system modeling and assimilation system at satellite-resolvable scale. NU-WRF is one of three major earth system modeling systems funded by NASA’s Modeling Analysis and Prediction (MAP) program.

NU-WRF Components:

Scientific Objectives: 

NU-WRF is designed to study following areas.

  • Impacts of land-surface initialization and hydrological data assimilation on mesoscale weather and regional climate.
  • Feedbacks and coupling between the land surface and planetary boundary layer.
  • High-impact phenomena, such as hurricane, squall line, blizzard, and drought/flood, dust storms, wildfire, heavy pollution events. 
  • Aerosol-cloud-precipitation interactions.
  • Mesoscale processes controlling the variability of aerosols and trace gases.
  • Effects of aerosols and trace gases on regional climate and air quality.
  • Improve representation of regional water cycle through assimilating precipitation-affected microwave radiance from satellites.
  • Semi-operational high-resolution weather forecasting to support NASA’s field campaigns.
  • Downscaling NASA’s global modeling and reanalysis for regional climate.
  • Supporting current and future satellite missions via satellite simulator.
  • Improving CO2 flux and transport process representation via high-resolution simulation of the surface state and weather.

Principal Investigator: Christa Peters-Lidard

Co-PI: Toshihisa Matsui 

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Peters-Lidard, C.D., E. M. Kemp, T. Matsui, J. A. Santanello, Jr., S. V., Kumar, J. P. Jacob, T. Clune, W.-K. Tao, M. Chin, A. Hou, J. L. Case,, D. Kim, K.-M. Kim, W. Lau, Y. Liu, J.-J. Shi, D. Starr, Q. Tan,, Z. Tao, B. F. Zaitchik, B. Zavodsky, S. Q. Zhang, M. Zupanski (2015), Integrated modeling of aerosol, cloud, precipitation and land processes at satellite-resolved scales, Environmental Modelling & Software67, 149–159.  doi: