Temperatures across nearly all of Australia increased through the 20th century, as did sea surface temperatures in the surrounding oceans. It seems likely that much of the warming is due to increased atmospheric concentrations of greenhouse gases. Rainfall trends have been less spatially consistent than the temperature trends with areas of increase (especially in the northwest) and areas of decrease (especially in the southwest). There is some evidence suggesting that some of the rainfall trends are the result of human influences, but this evidence is less convincing than is the case with the increases in temperature.
References
1.
CollinsD.A.Della-MartaP.M.PlummerN. and TrewinB.C.2000. Trends in annual frequencies of extreme temperature events in Australia. Aust. Met. Mag., 49, 277–292.
2.
CollinsD.A., and MartaDella P.M.2002. Atmospheric indicators for the State of the Environment Report 2001. Technical Report No. 74, Bureau of Meteorology, Australia, 25 pp.
3.
Della-MartaP.M.CollinsD.A., and BraganzaK.2004. Updating Australia's high-quality annual temperature dataset. Aust. Met. Mag., 53, 75–93.
4.
GriffithsG.M.ChambersL.E.HaylockM.R.MantonM.J.NichollsN.BaekH.-J.ChoiY.Della-MartaP.GosaiA.IgaN.LataR.LaurentV.MaitrepierreL.NakamigawaH.OuprasitwongN.SolofaD.TahiniL.ThuyD.T.TibigL.TrewinB.VediapanK.ZhaiP.2005. Change in mean temperature as a predictor of extreme temperature change in the Asia-Pacific region. Int. J. Climatology (in press).
5.
HaylockM., and NichollsN.2000. Trends in extreme rainfall indices for an updated high quality data set for Australia, 1910–1998. Int. J. Climatology, 20, 1533–1541.
6.
HennessyK.J.SuppiahR., and PageC.M.1999. Australian rainfall changes, 1910–1995. Aust. Met. Mag., 48, 1–13.
7.
HennessyK.J.2004. Climate change and Australian storms. Proc. Int. Conf. On Storms, Brisbane, 5–9 July 2004.
8.
IOCI2002. Climate variability and change in south west Western Australia. Indian Ocean Climate Initiative, Perth, Australia, September 2002, 34 pp.
9.
IPCC2001. Climate Change 2001 Synthesis Report, Cambridge University Press, Cambridge, UK, 2001, 397 pp.
10.
JonesD.A., and WeymouthG.T.1997. An Australian monthly rainfall dataset. Technical Report No. 70, Bureau of Meteorology, Australia.
11.
KarolyD.2001. Interannual and longer-term variations of Australian mean climate parameters from observations and model simulations. In: Understanding the climate of Australia and the Indo-Pacific region. Extended abstracts of presentations at the thirteenth annual BMRC modelling workshop, 14–16 November 2001, JasperJ. D. & MeighenP. J. (eds), BMRC Research Report No. 84, October 2001, Bureau of Meteorology Research Centre, Melbourne.
12.
KarolyD.2003. Ozone and climate change. Science, 302, 236–237.
13.
KarolyD.J., and BraganzaK.2005a. Attribution of recent temperature changes in the Australian region. J. Climate, 18, 457–464.
14.
KarolyD.J., and BraganzaK.2005b. A new approach to detection of anthropogenic temperature changes in the Australian region. Meteorology and Atmospheric Physics, (submitted).
15.
KiemA.S., and FranksS.W.2004. Multidecadal variability of drought risk – eastern Australia. Hydrological Processes, 18, DOI: 10.1002/hyp.1460.
16.
KuleshovY.A.de HoedtG.WrightW., and BrewsterA.2002. Thunderstorm distribution and frequency in Australia. Aust. Met. Mag., 51, 145–154.
17.
KuleshovY.A.2003. Tropical cyclones in the southern hemisphere: Influence of the El Nino-Southern Oscillation phenomenon. In: Seventh international conference on southern hemisphere meteorology and oceanography, 24–28 March 2003, Wellington, New Zealand, 202–203.
18.
LaveryB.JoungG., and NichollsN.1997. An extended high-quality historical rainfall dataset for Australia. Aust. Met. Mag., 46, 27–38.
19.
LiepertB.FeichterJ.LohmannU., and RoecknerE.2004. Can aerosols spin down the water cycle in a warmer and moister world?Geophys. Res. Letts., 31, L06207, doi:10.1029/2003GL019060.
20.
MeehlG.A.WashingtonW.M.AmmannC.M.ArblasterJ.M.WigleyT.M.L., and TebaldiC.2004. Combinations of natural and anthropogenic forcings in twentieth-century climate. J. Climate, 17, 3721–3727.
21.
NarisimaG.T., and PitmanA.J.2003. The impact of 200 years of land cover change on the Australian near-surface climate. J. Hydrometeorology, 4, 424–436.
22.
NichollsN.TappR.BurrowsK., and RichardsD.1996. Historical thermometer exposures in Australia. Int. J. Climatology, 16, 705–710.
23.
NichollsN.LandseaC, and GillJ.1998. Recent trends in Australian region tropical cyclone activity. Meteorology and Atmospheric Physics, 65, 197–205.
24.
NichollsN.TrewinB., and HaylockM.2000. Climate Extremes Indicators for State of the Environment Monitoring. State of the Environment Technical Paper Series (The Atmosphere), Department of the Environment and Heritage, Canberra, Australia, 20 pp.
25.
NichollsN.2003. Continued anomalous warming in Australia. Geophys. Res. Lett., 30, article 23.
26.
NichollsN.2004. The changing nature of Australian droughts. Climatic Change, 63, 323–336.
27.
NichollsN.Della-MartaP., and CollinsD.2004. 20th century changes in temperature and rainfall in New South Wales. Aust. Met. Mag., 53, 263–268.
28.
NichollsN.2005. Climate variability, climate change, and the Australian snow season. Aust. Met. Mag., (submitted).
29.
PitmanA.J.NarismaG.T.PielkeR.A.Sr. and HolbrookN.J.2004. Impact of land cover change on the climate of southwest Western Australia. J. Geophys. Res., 109, D18109, doi:10.1029/2003JD004347.
30.
PowerS.TseitkinF.MehtaV.TorokS., and LaveryB.1999a. Decadal climate variability in Australia during the 20th century. Int. J. Climatology, 19, 169–184.
31.
PowerS.FollandCColmanA. and MehtaV.1999b. Inter-decadal modulation of the impact of ENSO on Australia. Climate Dynamics, 15, 319–324.
32.
SmithI.2004. An assessment of recent trends in Australian rainfall. Aust. Met. Mag., 53, 163–173.
33.
StottP.A.2003. Attribution of regional-scale temperature changes to anthropogenic and natural causes. Geophys. Res. Letts., 30, 1728.
34.
TimbalB.2004. Southwest Australia past and future rainfall trends. Climate Research, 26, 233–249.
35.
TorokS., and NichollsN.1996. A historical annual temperature dataset for Australia. Aust. Met. Mag., 45, 251–260.
36.
TrewinB.C.2001. Extreme temperature events in Australia. PhD Thesis, School of Earth Sciences, University of Melbourne, Australia.
37.
VineyN.R., and BatesB.C.2004. It never rains on Sunday: The prevalence and implications of untagged multi-day rainfall accumulations in the Australian high quality data set. Int. J. Climatology, 24, 1171–1192.