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| Titel |
Regional climate modeling of heat stress, frost, and water stress events in the agricultural region of Southwest Western Australia under the current climate and future climate scenarios. |
| VerfasserIn |
Jatin Kala, Tom J. Lyons, Deborah J. Abbs, Ian J. Foster |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250033289
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| Zusammenfassung |
| Heat stress, frost, and water stress events have significant impacts on grain quality and
production within the agricultural region (wheat-belt) of Southwest Western Australia
(SWWA) (Cramb, 2000) and understanding how the frequency and intensity of these events
will change in the future is crucial for management purposes. Hence, the Regional
Atmospheric Modeling System (Pielke et al, 1992) (RAMS Version 6.0) is used to simulate
the past 10 years of the climate of SWWA at a 20 km grid resolution by down-scaling the
6-hourly 1.0 by 1.0 degree National Center for Environmental Prediction Final Analyses from
December 1999 to Present. Daily minimum and maximum temperatures, as well as
daily rainfall are validated against observations. Simulations of future climate are
carried out by down-scaling the Commonwealth Scientific and Industrial Research
Organization (CSIRO) Mark 3.5 General Circulation Model (Gordon et al, 2002) for
10 years (2046-2055) under the SRES A2 scenario using the Cubic Conformal
Atmospheric Model (CCAM) (McGregor and Dix, 2008). The 6-hourly CCAM
output is then downscaled to a 20 km resolution using RAMS. Changes in extreme
events are discussed within the context of the continued viability of agriculture in
SWWA.
Cramb, J. (2000) Climate in relation to agriculture in south-western Australia. In: The
Wheat Book (Eds W. K. Anderson and J. R. Garlinge). Bulletin 4443. Department of
Agriculture, Western Australia.
Gordon, H. B., Rotstayn, L. D., McGregor, J. L., Dix, M. R., Kowalczyk, E. A., O’Farrell,
S. P., Waterman, L. J., Hirst, A. C., Wilson, S. G., Collier, M. A., Watterson, I. G., and Elliott,
T. I. (2002). The CSIRO Mk3 Climate System Model [Electronic publication]. Aspendale:
CSIRO Atmospheric Research. (CSIRO Atmospheric Research technical paper; no. 60). 130
p
McGregor, J. L., and Dix, M. R., (2008) An updated description of the conformal-cubic
atmospheric model. High Resolution Simulation of the Atmosphere and Ocean, Hamilton, K.
and Ohfuchi, W., Eds., Springer, 51-76.
Pielke, R. A., Cotton, W. R., Walko, R. L., Tremback, C. J., Lyons, W. A., Grasso, L. D.,
Nicholls, M. E., Moran, M. D., Wesley, D. A., Lee, T. J., Copeland, J. H., (1992) A
comprehensive meteorological modeling system – RAMS. Meteorol. Atmos. Phys., 49,
69–91. |
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