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Differences among model simulations of climate change on the scale of resource regions

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Abstract

The climate simulations from atmospheric general circulation models (GCMs) are often used to analyze the potential effects of climate change on environmental resources. It has been demonstrated that there are differences among the simulations from various GCMs, on spatial scales ranging from global to regional. This paper quantifies the differences in temperature and precipitation simulated by three major GCMs for four specific regions: an agricultural region (the North American winter wheat belt), a hydrologic region (the Great Basin), a demographic region (the high-density population corridor of the northeast United States), and a political region (the state of Texas). Both the current (control) climate and the climatic response to a doubling of atmospheric carbon dioxide (CO2) are considered

In each region, even when the data are averaged on a seasonal basis, marked differences occurred in the areal average climate simulated by the different GCMs for both the control climate and the doubled-CO2 climate. Thus, climate impact studies based on the simulations of more than one GCM could easily yield a range of possible results

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Authors and Affiliations

  1. Environmental Sciences Division, Oak Ridge National Laboratory, 37831-6335, Oak Ridge, Tennessee, USA

    Robert M. Cushman & Penny N. Spring

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  1. Robert M. Cushman
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  2. Penny N. Spring
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Cushman, R.M., Spring, P.N. Differences among model simulations of climate change on the scale of resource regions. Environmental Management 13, 789–795 (1989). https://doi.org/10.1007/BF01868318

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