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NU-WRF System

The NASA-Unified WRF(NU-WRF) modeling system has been developed at Goddard Space Flight Center (GSFC) as an observation-driven integrated modeling system representing aerosol, cloud, precipitation, and land processes at satellite-resolved scales (Peters-Lidard et al., 2014). NU-WRF is intended as a superset of the standard NCAR Advanced Research WRF [WRF-ARW; (Skamarock et al., 2008)] and incorporates:

In addition, multiple pre- and post-processors from the community and from GSFC have been collected with the NU-WRF model proper. Taken together, the NU-WRF modeling system provides a framework for simulating aerosol and land use effects on such phenomena as floods, tropical cyclones, mesoscale convective systems, droughts, and monsoons. Support also exists for treating CO2 as a tracer, with plans to further refine it into source components (anthropogenic versus biogenic). 

Work is underway to add an ensemble Kalman-filter based atmospheric data assimilation system for NU-WRF with the capability of assimilating cloud and precipitation-affected radiances. In addition, some secondary, rarely used elements of the community WRF modeling system are not yet included in NU-WRF but will be added in the future.


Complete documentation on the NU-WRF system is available in the NU-WRF user's guide.  User guides for GSDSU, Goddard Radiation Scheme, GOCART dust model sources, and CASA2WRF are also available. A pre-processor to initialize NU-WRF with MERRA2 reanalysis is also available.

NU-WRF components and features are shown in the following flowchart. 


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: