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Impact of More Frequent Observations on the Understanding of Tasmanian Fire Danger


Fox-Hughes, P, Impact of More Frequent Observations on the Understanding of Tasmanian Fire Danger, Journal of Applied Meteorology and Climatology, 50, (8) pp. 1617-1626. ISSN 1558-8424 (2011) [Refereed Article]

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Copyright 2011 AMS

DOI: doi:10.1175/JAMC-D-10-05001.1


Half-hourly airport weather observations have been used to construct high-temporal-resolution datasets of McArthur Mark V forest fire danger index (FFDI) values for three locations in Tasmania, Australia, enabling a more complete understanding of the range and diurnal variability of fire weather. Such an understanding is important for fire management and planning to account for the possibility of weather-related fire flare ups�in particular, early in a day and during rapidly changing situations. In addition, climate studies have hitherto generally been able to access only daily or at best 3-hourly weather data to generate fire-weather index values. Comparison of FFDI values calculated from frequent (subhourly) observations with those derived from 3-hourly synoptic observations suggests that large numbers of significant fire-weather events are missed, even by a synoptic observation schedule, and, in particular, by observations made at 1500 LT only, suggesting that many climate studies may underestimate the frequencies of occurrence of fire-weather events. At Hobart, in southeastern Tasmania, only one-half of diurnal FFDI peaks over a critical warning level occur at 1500 LT, with the remainder occurring across a broad range of times. The study reinforces a perception of pronounced differences in the character of fire weather across Tasmania, with differences in diurnal patterns of variability evident between locations, in addition to well-known differences in the ranges of peak values observed.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Atmospheric sciences
Research Field:Meteorology
Objective Division:Environmental Management
Objective Group:Air quality, atmosphere and weather
Objective Field:Atmospheric processes and dynamics
UTAS Author:Fox-Hughes, P (Dr Paul Fox-Hughes)
ID Code:76311
Year Published:2011
Web of Science® Times Cited:4
Deposited By:IMAS Research and Education Centre
Deposited On:2012-03-05
Last Modified:2012-04-12
Downloads:2 View Download Statistics

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