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| North American Regional Climate Change Assessment Program | |
|---|---|
| Name | North American Regional Climate Change Assessment Program |
| Abbreviation | NARCCAP |
| Formation | 2006 |
| Purpose | Regional climate modeling for North America |
| Region | Canada, United States, Mexico |
North American Regional Climate Change Assessment Program The North American Regional Climate Change Assessment Program coordinates regional climate modeling across Canada, the United States, and Mexico to refine projections for impacts assessments, adaptation planning, and research. It brings together multiple modeling centers, federal agencies, and academic institutions to downscale Global Climate Models using regional models and to produce multi-model ensembles for stakeholders in North America, including researchers in environmental science, planners in infrastructure, and analysts in public policy. The program bridges continental datasets, computational resources, and cross-border collaborations to inform decisions related to water resources, agriculture, and coastal management.
NARCCAP provides coordinated regional climate downscaling by linking international and national modeling efforts such as those involving Hadley Centre, National Center for Atmospheric Research, Canadian Centre for Climate Modelling and Analysis, Geophysical Fluid Dynamics Laboratory, and modeling groups at universities like University Corporation for Atmospheric Research partners. The program produces high-resolution simulations that complement outputs from initiatives like the Intergovernmental Panel on Climate Change assessments and regional projects used by agencies such as Environment and Climate Change Canada, the National Oceanic and Atmospheric Administration, and the Mexican National Institute of Ecology and Climate Change.
NARCCAP originated from collaborations among agencies and research centers following dialogues at forums that included participants from the U.S. Department of Energy, U.S. Environmental Protection Agency, and academic consortia tied to National Science Foundation funding cycles. Early planning aligned with milestones in international assessment history including reports by the Intergovernmental Panel on Climate Change and agreements discussed at conferences such as the Conference of the Parties sessions. Development involved model intercomparison practices similar to those in the Coupled Model Intercomparison Project and leveraged expertise from regional initiatives like the Pacific Climate Impacts Consortium and university groups including Princeton University, University of Colorado Boulder, and Colorado State University.
The program applies multiple regional climate models (RCMs) driven by boundary conditions from global models such as those produced by Hadley Centre, Max Planck Institute for Meteorology, and the National Center for Atmospheric Research. Core methodological elements parallel protocols from the Coupled Model Intercomparison Project and employ dynamical downscaling with RCMs including configurations developed at centers like Geophysical Fluid Dynamics Laboratory and university modeling labs at University of Oklahoma and Massachusetts Institute of Technology. Ensembles are constructed to sample uncertainty across greenhouse gas scenarios influenced by pathways discussed in Intergovernmental Panel on Climate Change work. Model evaluation uses observations from networks such as NOAA National Centers for Environmental Information, Environment and Climate Change Canada datasets, and reanalyses like ERA-Interim and NCEP/NCAR Reanalysis.
NARCCAP distributes model output—including temperature, precipitation, wind, and extreme indices—through portals used by agencies such as NOAA, Environment and Climate Change Canada, and academic repositories at institutions like National Center for Atmospheric Research and University of Maryland. Datasets support downstream tools developed at organizations like USGS, EPA, and research groups at Lawrence Berkeley National Laboratory and are formatted to integrate with software from ESRI, NetCDF standards, and visualization platforms used by NASA researchers. Products include multi-model ensembles, bias-corrected time series, and regional projections tailored for sectors represented by U.S. Army Corps of Engineers, National Weather Service, and provincial agencies in Ontario and Quebec.
Stakeholders apply NARCCAP outputs to studies in water resources managed by U.S. Bureau of Reclamation, agricultural planning at institutions such as USDA, and coastal planning linked to work by NOAA Office for Coastal Management and Environment and Climate Change Canada coastal programs. Academic research at universities including University of British Columbia, Cornell University, and University of Arizona has used NARCCAP data for studies on extreme events, hydrology, and ecosystem impacts, informing adaptation strategies in municipalities like New York City and Vancouver. Outputs inform assessments by organizations such as the Union of Concerned Scientists and are integrated into decision-support frameworks used by agencies like Federal Emergency Management Agency.
Critiques of NARCCAP mirror those of regional modeling initiatives, including concerns about model resolution limits noted in studies from Intergovernmental Panel on Climate Change authors, biases identified by researchers at Lawrence Livermore National Laboratory and challenges in sampling model structural uncertainty similar to debates surrounding the Coupled Model Intercomparison Project. Limitations include sensitivity to boundary conditions from global models at centers like Hadley Centre and dependence on scenario frameworks discussed in Intergovernmental Panel on Climate Change reports. Users and reviewers from institutions such as University of Washington and Yale University have emphasised caution when translating ensemble spreads into probabilistic statements and when applying outputs to sectoral planning in contexts governed by legal frameworks like those in California and Texas.
The program was coordinated through partnerships among federal laboratories, academic consortia, and agencies including U.S. Department of Energy, National Oceanic and Atmospheric Administration, Environment and Climate Change Canada, and Mexican institutions such as the National Autonomous University of Mexico. Funding streams historically included grants from the U.S. Department of Energy, project support via the National Science Foundation, and contributions from partner agencies similar to arrangements seen in programs at National Oceanic and Atmospheric Administration and National Aeronautics and Space Administration. Governance involved steering committees with representatives from participating modeling centers at universities like University of Illinois Urbana-Champaign and national labs including Oak Ridge National Laboratory.
Category:Climate modeling