Southeast Australia's wintertime precipitation: sensitivity of climate predictions to model resolution

A. J. Pitman; F. Giorgi; A. Henderson-Sellers

Southeast Australia's wintertime precipitation: sensitivity of climate predictions to model resolution

A. J. Pitman, F. Giorgi, A. Henderson-Sellers

Research output: Contribution to journal › Article › peer-review

Abstract

It is found that the NCAR CCM1 T42 simulation provides good large-scale precipitation patterns, and that the MM4B produces the most accurate regional detail. It is suggested that to investigate continental-scale processes, AGCMs need to use a horizontal resolution which approximates or is finer than 3° × 3°. For the investigation of climate impact or land-surface change at the regional scale, a 70 km resolution, achieved by embedding a mesoscale model within an AGCM, seems to provide considerable potential.

Original language	English
Pages (from-to)	21-35
Number of pages	15
Journal	Australian Meteorological Magazine
Volume	39
Issue number	1
Publication status	Published - 1991

Cite this

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title = "Southeast Australia's wintertime precipitation: sensitivity of climate predictions to model resolution",

abstract = "It is found that the NCAR CCM1 T42 simulation provides good large-scale precipitation patterns, and that the MM4B produces the most accurate regional detail. It is suggested that to investigate continental-scale processes, AGCMs need to use a horizontal resolution which approximates or is finer than 3° × 3°. For the investigation of climate impact or land-surface change at the regional scale, a 70 km resolution, achieved by embedding a mesoscale model within an AGCM, seems to provide considerable potential. ",

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N2 - It is found that the NCAR CCM1 T42 simulation provides good large-scale precipitation patterns, and that the MM4B produces the most accurate regional detail. It is suggested that to investigate continental-scale processes, AGCMs need to use a horizontal resolution which approximates or is finer than 3° × 3°. For the investigation of climate impact or land-surface change at the regional scale, a 70 km resolution, achieved by embedding a mesoscale model within an AGCM, seems to provide considerable potential.

AB - It is found that the NCAR CCM1 T42 simulation provides good large-scale precipitation patterns, and that the MM4B produces the most accurate regional detail. It is suggested that to investigate continental-scale processes, AGCMs need to use a horizontal resolution which approximates or is finer than 3° × 3°. For the investigation of climate impact or land-surface change at the regional scale, a 70 km resolution, achieved by embedding a mesoscale model within an AGCM, seems to provide considerable potential.

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SN - 0004-9743

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JO - Australian Meteorological Magazine

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Southeast Australia's wintertime precipitation: sensitivity of climate predictions to model resolution

Abstract

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