Influence of savanna fire on Australian monsoon season precipitation and circulation as simulated using a distributed computing environment

Details Influence of savanna fire on Australian monsoon season precipitation and circulation as simulated using a distributed computing environment Influence of savanna fire on Australian monsoon season precipitation and circulation as simulated using a distributed computing environment

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3420801l&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 20, CiteID L20801

Statistics

Computation

2

Atmospheric Processes: Land/Atmosphere Interactions (1218, 1631, 1843), Computational Geophysics: Modeling (4255), Atmospheric Processes: Global Climate Models (1626, 4928), Atmospheric Processes: Tropical Meteorology

Scientific paper

Fires in the Australian savanna have been hypothesized to affect monsoon evolution, but the hypothesis is controversial and the effects have not been quantified. A distributed computing approach allows the development of a challenging experimental design that permits simultaneous variation of all fire attributes. The climate model simulations are distributed around multiple independent computer clusters in six countries, an approach that has potential for a range of other large simulation applications in the earth sciences. The experiment clarifies that savanna burning can shape the monsoon through two mechanisms. Boundary-layer circulation and large-scale convergence is intensified monotonically through increasing fire intensity and area burned. However, thresholds of fire timing and area are evident in the consequent influence on monsoon rainfall. In the optimal band of late, high intensity fires with a somewhat limited extent, it is possible for the wet season to be significantly enhanced.

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