CLIMATE CHANGE AND AUSTRALIAS DESERTS
world-wide temperatures are expected to warm over the next vitamin C as a result of increased levels of greenhouse gases in the atmosphere, and Australias scourges are no exception. Projections made by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) demo that the warming rate in the arid zone is probably to be on a par with global come levels, which are expected to be between 1.4°C and 5.8°C higher than today by 2100. A warming of this order of magnitude will substantially increase heat discomfort in the arid zones.
Projections of future rainwater changes are more uncertain. piece rainfall averaged over the globe is likely to increase slightly, the regional distribution of changes is highly uncertain. CSIRO projections suggest no clear endeavor towards either significantly drier or wetter conditions in the northern half of the arid zone, although it is worth noting that much of this region has had a substantial rainfall increase since 1960.
On the other(a) hand, rainfall is more likely to decrease than increase in the southern part of the arid zone, particularly in the westward Australian sector where a decrease in rainfall is highly probable.
Considering only the climatic definition of a desert (and not considering issues of land degradation, which are often part of what is meant by the term desertification), mid-range CSIRO projections suggest that by 2070 the southern boundary of the Australian desert would be expected to move south by 100-200 km, with the northern boundary moving less than 50 km.
S3 rain - 1 January 1999 to 31 December 2001
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