Regional seasonality of fire size and fire weather conditions across Australia's northern savanna

Perry, Justin J., Cook, Garry D., Graham, Erin, Meyer, C.P. (Mick), Murphy, Helen T., and VanDerWal, Jeremy (2020) Regional seasonality of fire size and fire weather conditions across Australia's northern savanna. International Journal of Wildland Fire, 29 (1). pp. 1-10.

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Abstract

Australia's northern savannas have among the highest fire frequencies in the world. The climate is monsoonal, with a long, dry season of up to 9 months, during which most fires occur. The Australian Government's Emissions Reduction Fund allows land managers to generate carbon credits by abating the direct emissions of CO2 equivalent gases via prescribed burning that shifts the fire regime from predominantly large, high-intensity late dry season fires to a more benign, early dry season fire regime. However, the Australian savannas are vast and there is significant variation in weather conditions and seasonality, which is likely to result in spatial and temporal variations in the commencement and length of late dry season conditions. Here, we assess the temporal and spatial consistency of the commencement of late dry season conditions, defined as those months that maximise fire size and where the most extreme fire weather conditions exist. The results demonstrate that significant yearly, seasonal and spatial variations in fire size and fire weather conditions exist, both within and between bioregions. The effective start of late dry season conditions, as defined by those months that maximise fire size and where the most extreme fire weather variables exist, is variable across the savannas.

Item ID: 61923
Item Type: Article (Research - C1)
ISSN: 1448-5516
Keywords: burning, carbon farming, fire management
Copyright Information: © IAWF 2020 Open Access CC BY-NC-ND.
Funders: Department of Environment and Energy
Date Deposited: 11 Mar 2020 22:23
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050209 Natural Resource Management @ 100%
SEO Codes: 96 ENVIRONMENT > 9610 Natural Hazards > 961009 Natural Hazards in Sparseland, Permanent Grassland and Arid Zone Environments @ 50%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960501 Ecosystem Assessment and Management at Regional or Larger Scales @ 50%
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