Regional climates in GCMs. Final report

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This research describes empirical methods developed to obtain short-term, regional results from global climate models. Observational data sets were compared to the GENESIS climate model; spatial and temporal variability were examined to validate the circulation model on the synoptic scale. A feed-forward neural network was used to determine transfer functions for circulation-precipitation relationships. The empirical methodologies derived were then applied to the analysis of mountain snowpack in the upper Colorado Basin. The comparison of observational data and the model showed that the synoptic scale circulation of the GENESIS model is realistic over the eastern United States; however, the model features ... continued below

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13 p.

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Crane, R.G. December 31, 1995.

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Description

This research describes empirical methods developed to obtain short-term, regional results from global climate models. Observational data sets were compared to the GENESIS climate model; spatial and temporal variability were examined to validate the circulation model on the synoptic scale. A feed-forward neural network was used to determine transfer functions for circulation-precipitation relationships. The empirical methodologies derived were then applied to the analysis of mountain snowpack in the upper Colorado Basin. The comparison of observational data and the model showed that the synoptic scale circulation of the GENESIS model is realistic over the eastern United States; however, the model features are displaced south by about five degrees and actual pressures in the model are much lower than observed pressures. Preliminary results from the neural network produced correlations between observed and predicted rainfall of about 0.7 to 0.8, depending on the net configuration. Similar results were obtained for the upper Colorado Basin study in the prediction of winter snowfall. 6 refs., 3 figs.

Physical Description

13 p.

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OSTI as DE97006787

Medium: P; Size: 13 p.

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  • Other Information: PBD: 1995

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  • Other: DE97006787
  • Report No.: DOE/ER/61717--T1
  • Grant Number: FG02-93ER61717
  • DOI: 10.2172/491353 | External Link
  • Office of Scientific & Technical Information Report Number: 491353
  • Archival Resource Key: ark:/67531/metadc675749

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  • December 31, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 7, 2017, 12:48 p.m.

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Crane, R.G. Regional climates in GCMs. Final report, report, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc675749/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.