Filters








34 Hits in 10.5 sec

Conditional Performance Evaluation: Using Wildfire Observations for Systematic Fire Simulator Development

Thomas Duff, Jane Cawson, Brett Cirulis, Petter Nyman, Gary Sheridan, Kevin Tolhurst
2018 Forests  
Performance was quantified using the sum of the Area Difference Indices-a measure of prediction overlap calculated for each prediction/observation pair.  ...  We describe and demonstrate a method for use in model development, whereby a dataset comprised of wildfire case-studies is used for evaluating the predictive performance of fire simulators.  ...  The software used for fire comparisons and simulation was PHOENIX RapidFire, a system developed at the University of Melbourne. The versions used were 4.007 and 4.008.  ... 
doi:10.3390/f9040189 fatcat:5jlcct5xnzgrtibnjidttmaaza

Is Timber Insurable? A Study of Wildfire Risks in the U.S. Forest Sector Using Spatio-temporal Models

X. Chen, B. K. Goodwin, J. P. Prestemon
2013 American Journal of Agricultural Economics  
In the U.S. forest products industry, wildfire is one of the leading causes of damage and economic losses.  ...  Our paper studies wildfire risks using crucial informational variables across both spatial units and time periods. Several statistical models are used to quantify the risks.  ...  Wildfire can spread quickly over a large area spanning township boundaries, so county-level statistics about wildfire losses may be more accurate and useful.  ... 
doi:10.1093/ajae/aat087 fatcat:ogli7tnetfbf7i77khh6dahxgm

Fire in the Earth System [chapter]

S.P. Harrison, J.R. Marlon, P.J. Bartlein
2010 Changing Climates, Earth Systems and Society  
Understanding of the controls and variability of fire also underpins the development of models, both conceptual and numerical, that allow us to predict how future climate and land-use changes might influence  ...  The prospect of near-term rapid and large climate changes, and the escalating costs of large wildfires, necessitates a radical re-thinking and the development of approaches to fire management that promote  ...  under current climate conditions. a Annual fractional burnt area and b observed month of maximum burnt area for regions where the fractional burnt area is greater than >0.1%, both averaged over each product  ... 
doi:10.1007/978-90-481-8716-4_3 fatcat:mzb6rmmr2vejdkk3fgglol7g5a

Fire in the Earth System

D. M. J. S. Bowman, J. K. Balch, P. Artaxo, W. J. Bond, J. M. Carlson, M. A. Cochrane, C. M. D'Antonio, R. S. DeFries, J. C. Doyle, S. P. Harrison, F. H. Johnston, J. E. Keeley (+10 others)
2009 Science  
Understanding of the controls and variability of fire also underpins the development of models, both conceptual and numerical, that allow us to predict how future climate and land-use changes might influence  ...  The prospect of near-term rapid and large climate changes, and the escalating costs of large wildfires, necessitates a radical re-thinking and the development of approaches to fire management that promote  ...  under current climate conditions. a Annual fractional burnt area and b observed month of maximum burnt area for regions where the fractional burnt area is greater than >0.1%, both averaged over each product  ... 
doi:10.1126/science.1163886 pmid:19390038 fatcat:vrcnt2fiyjforn5g55gnen7uku

Radiative Transfer Modelling for the characterisation of natural burnt surfaces

Philip Lewis, Mat Disney, Jose Gómez-dans, Martin John Wooster, Bernard Pinty, david roy
2022 figshare.com  
These tend to use thermal and/or optical observations to denote an area as being affected by fire if, for instance, the thermal signature is high or the reflectance in near infrared (NIR) or middle infrared  ...  There is a long history of using Earth Observation (EO) data in monitoring wildfires that has led to the development of operational products measuring fire occurrence.  ...  for Earth Observation (NCEO) for support to Lewis, Disney & Wooster over the extended period of this project.  ... 
doi:10.6084/m9.figshare.19657785.v1 fatcat:sghgq4exljbt7nlza37ghg34su

Objective identification of multiple large fire climatologies: an application to a Mediterranean ecosystem

J Ruffault, V Moron, R M Trigo, T Curt
2016 Environmental Research Letters  
This approach offers a better understanding of the variations in fire activity and fire spread patterns in the context of contemporaneous global changes.  ...  In addition the current increase in HD potential fire days indicates a potential shift in the dominant FWT for this region.  ...  Acknowledgments This work is a contribution to the Labex OT-Med (ANR-11-LABEX-0061) funded by the 'Investissements d'Avenir', French Government program of the French National Research Agency (ANR) through  ... 
doi:10.1088/1748-9326/11/7/075006 fatcat:6owxmebz5rayfaqyhablzhwti4

Retrieval of biomass combustion rates and totals from fire radiative power observations: Application to southern Africa using geostationary SEVIRI imagery

G. Roberts, M. J. Wooster, G. L. W. Perry, N. Drake, L.-M. Rebelo, F. Dipotso
2005 Journal of Geophysical Research  
Rebelo, and F. Dipotso (2005) , Retrieval of biomass combustion rates and totals from fire radiative power observations: Application to southern Africa using geostationary SEVIRI imagery,  ...  A new approach for providing such estimates is via remote sensing observations of fire radiative power (FRP), a variable proportional to the rate of fuel consumption.  ...  The authors would like to thank the Government of Botswana and in particular the Department of Wildlife and National Parks for their support and assistance in conducting the field component of this research  ... 
doi:10.1029/2005jd006018 fatcat:agrey6pwffcwfmymkyneuzljda

Seasonality of carbon emissions from biomass burning in a Zambian savanna

E. A. Hoffa, D. E. Ward, W. M. Hao, R. A. Susott, R. H. Wakimoto
1999 Journal of Geophysical Research  
Acknowledgements We thank the Luso-American Foundation for the Development, which provided financial support to the participation of J.M.C.P., A.C.L.S., and J.M.N.S. in the Third Intensive Field Campaign  ...  Sá was funded by the Foundation for Science and Technology, Ministry for Science and Technology, Portugal, through the doctoral grant SFRH/BD/891. Acknowledgments  ...  Evaluation of the detectability of sub-pixel burned area using a combination of the seven reflective MODIS channels was performed using a regression tree , in which the mean value observed in each terminal  ... 
doi:10.1029/1999jd900091 fatcat:jpd5kuxacbcmzial3gldrebrni

Introducing FRIAA Research

John Pineau
2014 Forestry Chronicle  
Using this research, the Association has developed preliminary models for both planted and naturally regenerated lodgepole pine, and a preliminary decision support tool for Mountain Pine Beetle post-infestation  ...  The Foothills Growth and Yield Association aims to expand understanding of lodgepole pine' s growth patterns in natural and regenerated stands, and develop tools for applying this knowledge in forest management  ...  Assistance from Bruce Avery and Milo Mihajlovich in the design and establishment of the field trial and their support for its measurement is appreciated.  ... 
doi:10.5558/tfc2014-090 fatcat:swpsuf446bbxbfmgs6lakvg64i

Terrestrial plant microfossils in palaeoenvironmental studies, pollen, microcharcoal and phytolith. Towards a comprehensive understanding of vegetation, fire and climate changes over the past one million years

Anne-Laure Daniau, Stéphanie Desprat, Julie C. Aleman, Laurent Bremond, Basil Davis, William Fletcher, Jennifer R. Marlon, Laurent Marquer, Vincent Montade, César Morales-Molino, Filipa Naughton, Damien Rius (+1 others)
2019 Revue de Micropaleontologie  
Acknowledgements We thank PAGES and INQUA for supporting the Global Paleofire Working Group (GPWG), the projects on "Abrupt Climate Changes and Environmental Responses" (International Focus Group ACER)  ...  and "Latin American Abrupt Climate Changes and Environmental Responses"  ...  The original motivation for this work was the evaluation of climate model simulations through forward modelling.  ... 
doi:10.1016/j.revmic.2019.02.001 fatcat:jady5vkcw5ckjcuv2efia5huf4

Luminescence Chronology [chapter]

Ken Munyikwa
2014 Geochronology - Methods and Case Studies  
[8] when in 1964 they applied the method on pottery sherds ranging in age from around 1,000-8,000 years and collected from sites spread over a large area.  ...  Apart from pottery, other heated materials of archaeological significance that can be dated using luminescence methods include burnt flint and burnt stones that were associated with human settlements and  ... 
doi:10.5772/58554 fatcat:vypr4qcygjdvna2mz2vroj24eq

Assessment of Vegetation Trends in Drylands from Time Series of Earth Observation Data [chapter]

Rasmus Fensholt, Stephanie Horion, Torbern Tagesson, Andrea Ehammer, Kenneth Grogan, Feng Tian, Silvia Huber, Jan Verbesselt, Stephen D. Prince, Compton J. Tucker, Kjeld Rasmussen
2015 Remote Sensing Time Series  
Leinenkugel for providing the physiographic regions, the land cover dataset, and the deforestation layer of the Mekong Basin used in this research.  ...  Acknowledgements Acknowledgements The authors thank P. Leinenkugel and U. Gessner for discussion of the manuscript.  ...  Large scale climate indices and especially SST anomalies for specific ocean areas were found to have predictive power for the vegetation productivity in the Sahel and the existence of a time lag of several  ... 
doi:10.1007/978-3-319-15967-6_8 fatcat:2cl5kwf33zg7hl2k3syukjpa6q

Quantification of Performance of Wildfire Chemicals using Custom-Built Heat Flux Sensors

Shammawi A A Anderson
2016
The capabilities of the improved sensor design were further expanded by application of the sensor to the evaluation of wildfire chemicals.  ...  The results indicated that the test methodology allowed for effective differentiation between the wildfire chemical treatments by comparing their mean ignition times.  ...  In the evaluation of wildfire chemicals, additional useful data may be possible. The methodology can be modified to measure the rate of spread.  ... 
doi:10.7939/r3s756w5v fatcat:hpzohxo7mzf7jfxznbyzmhcx7a

Response of Mycorrhizal Diversity to Current Climatic Changes

Stanley Bellgard, Stephen Williams
2011 Diversity  
Due to dependence on their host for C-supply, orchid mycorrhizas and all heterotrophic mycorrhizal groups will be immediately impacted through loss of habitat and plant-hosts.  ...  Form and function of mycorrhizas as well as tracing the presence of the mycorrhizal fungi through the geological time scale are herein first addressed.  ...  Glass; and discussions with the late Ross Beever, Andrea Vannini, Elaine Davison and Thomas Jung; SE Williams would like to thank Robin Long for assistance with the technical aspects of manuscript synthesis  ... 
doi:10.3390/d3010008 fatcat:vjnkfazyeja7rfplzp2xob52qi

Variation in flammability of jack pine/black spruce forests with time since fire in the Northwest Territories, Canada

Nathalie Lavoie
2004
R ep ro d u ced with p erm ission of th e copyright ow ner. Further reproduction prohibited w ithout perm ission. R ep ro d u ced with p erm ission o f th e copyright ow ner.  ...  In fact, commented that the use of unbumed areas within the perimeter of recent wildfires should be considered in the selection of sites for experimental fires.  ...  The analysis of rate o f spread and flame length from the expert opinion survey had already indicated the possibility that the experts may have underestimated the rate of spread in their predictions.  ... 
doi:10.7939/r3-3jcc-j357 fatcat:vzjabbi42veqlipsn25wmmhe6q
« Previous Showing results 1 — 15 out of 34 results