Numerical modelling and land-atmosphere feedback of drought in southeast Australia

X. H. Meng*, J. P. Evans, Matthew McCabe

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Albedo and vegetation fraction play important roles in land-atmosphere interactions and local climate change. In this paper, the influence of these land surface parameters on the evolution of the drought that occurred in southeastern Australia between 2000 and 2008 is investigated. To examine the impact of variable land surface conditions on the hydrometeorology of the region, the Weather Research and Forecasting (WRF) model was used to perform a twin-study under two distinct scenarios. In the first instance, WRF was run in control mode with the default climatological surface albedo and vegetation fraction data sets. Then, these key surface variables were run in experiment mode with data sets derived from available satellite data. Comparison of these simulations demonstrates the importance of capturing the dynamic nature of land surface fields as the climate moves into, and then out of, a persistent multi-year drought. Both simulations capture the drought reasonably well, emphasizing changes in the large-scale circulation as a primary cause. Differences in the surface conditions do, however, provide local influence on the intensity and severity of drought.

Original languageEnglish (US)
Title of host publicationHydro-Climatology
Subtitle of host publicationVariability and Change
Pages144-149
Number of pages6
StatePublished - Nov 25 2011
EventHydro-climatology - Variability and Change Symposium, part of the 25th International Union of Geodesy and Geophysics General Assembly, IUGG 2011 - Melbourne, VIC, Australia
Duration: Jun 28 2011Jul 7 2011

Publication series

NameIAHS-AISH Publication
Volume344
ISSN (Print)0144-7815

Other

OtherHydro-climatology - Variability and Change Symposium, part of the 25th International Union of Geodesy and Geophysics General Assembly, IUGG 2011
CountryAustralia
CityMelbourne, VIC
Period06/28/1107/7/11

Keywords

  • Albedo
  • Drought
  • Land-atmosphere interaction
  • Murray-Darling Basin
  • Vegetation fraction

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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