Spatial trends in synoptic rainfall in southern Australia
Article first published online: 30 JUL 2013
©2013. American Geophysical Union. All Rights Reserved.
Geophysical Research Letters
Volume 40, Issue 14, pages 3781–3785, 28 July 2013
How to Cite
2013), Spatial trends in synoptic rainfall in southern Australia, Geophys. Res. Lett., 40, 3781–3785, doi:10.1002/grl.50739., , and (
- Issue published online: 22 AUG 2013
- Article first published online: 30 JUL 2013
- Accepted manuscript online: 12 JUL 2013 09:56PM EST
- Manuscript Revised: 10 JUL 2013
- Manuscript Accepted: 10 JUL 2013
- Manuscript Received: 19 JUN 2013
- synoptic climatology
 This work assesses spatial and temporal changes in rainfall in southern Australia over the period 1990–2009. Rainfall is assessed by season and according to the synoptic system generating the rainfall. Rainfall decreases over the period across much of the southwest, with the most significant decrease occurring around 2000. These changes are associated with frontal and cutoff systems. Frontal systems dominate the timing and changes of rainfall in western Tasmania. In the southeast, the timing and magnitude of rainfall changes are more closely associated with cutoff systems and show consistent decreases in the early 1990s. The largest reductions in rainfall in the southeast are in the Alpine region and are due to cutoffs and fronts and exhibit seasonal and spatial variations consistent with the climatologies of these systems.