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The Nested Regional Climate Model


The Nested Regional Climate Model (NRCM) combines the strengths of NCAR's Weather Research and Forecasting (WRF) model and NCAR's Community Climate System Model (CCSM) into an instrument that will allow for fundamental progress on the understanding and prediction of regional climate variability and change. In particular, embedding WRF within CCSM will allow scientists to resolve processes that occur at the regional scale, as well as the influence of those processes on the large-scale climate, thereby improving the fidelity of climate change simulations and their utility for local and regional planning.

Principal Investigators

Greg Holland gholland(at)

Jim Hurrell jhurrell(at)


The NRCM initiative is proud to welcome Erin Towler, a USGS PACE Fellow. She will be assisting the NRCM team to incorporate tools that will downscale climate projections for decision-making and planning in the Northern Rockies.

More information about Erin and her work can be found at

Who is involved?

A collaborative effort

The Nested Regional Climate Model is an initiative of the National Center for Atmospheric Research (NCAR), in collaboration with university, government and private-industry colleagues. NCAR is sponsored by the National Science Foundation (NSF) and managed by the University Corporation for Atmospheric Research (UCAR).

Climate Dynamics Special Issue

Other links of interest

NRCM Brochure

What if...

Excerpt: ...With added support, the NRCM will be able to simulate a variety of 21st-century climates, from which statistical portraits of the future atmosphere can be produced...

To read the entire NRCM brochure, please download the PDF document.

Briefing to the Western Governors' Association

The Effect of Global Warming on the Western U.S.

Excerpt: ...Despite impressive gains in knowledge of global climate change, our understanding and predictive capacity of the Earth system remains insufficient for many societal needs, including the accurate and reliable predictions of regional climate change required for adaptation and mitigation strategies...

To read the entire 'Briefing' document, please download the PDF document.