The impact of recent model improvements on GISS GCM predictions of climate change. Final technical report, September 15, 1992--September 14, 1994

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The response of the 8 x 10{degree} horizontal resolution version of Model 2 to the forcing of globally observed SST (1980--1986) was evaluated. The simulations showed a realistic interannual variability of interhemispheric gradients of layer mean temperatures in response to observed SST gradients, but modeled near-surface winds over the Atlantic Ocean were much weaker than observed, a symptom of the Model 2 planetary boundary layer (PBL). In addition, the interannual variability of peak-season rainfall rates over Northeast Brazil (Nordeste) from the experiment was considerably smaller than the observed, although the observed negative association between seasonal Nordeste rainfall and interhemispheric Atlantic ... continued below

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Medium: P; Size: 24 p.

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Druyan, L.M. December 31, 1994.

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Description

The response of the 8 x 10{degree} horizontal resolution version of Model 2 to the forcing of globally observed SST (1980--1986) was evaluated. The simulations showed a realistic interannual variability of interhemispheric gradients of layer mean temperatures in response to observed SST gradients, but modeled near-surface winds over the Atlantic Ocean were much weaker than observed, a symptom of the Model 2 planetary boundary layer (PBL). In addition, the interannual variability of peak-season rainfall rates over Northeast Brazil (Nordeste) from the experiment was considerably smaller than the observed, although the observed negative association between seasonal Nordeste rainfall and interhemispheric Atlantic SST differences was weakly present. Preliminary experiments at 4 x 5{degree} resolution incorporating two of the new model parameterizations show more variability of the simulated Nordeste rainfall in response to the SST forcing, but only slight improvement in the correlation with observations.

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Medium: P; Size: 24 p.

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OSTI as DE96015297

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  • Other Information: PBD: [1994]

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  • Other: DE96015297
  • Report No.: DOE/ER/61477--T1
  • Grant Number: FG02-92ER61477
  • DOI: 10.2172/378846 | External Link
  • Office of Scientific & Technical Information Report Number: 378846
  • Archival Resource Key: ark:/67531/metadc687560

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  • December 31, 1994

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 20, 2015, 9:16 p.m.

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Druyan, L.M. The impact of recent model improvements on GISS GCM predictions of climate change. Final technical report, September 15, 1992--September 14, 1994, report, December 31, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc687560/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.