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A warming climate, fire exclusion, and land cover changes are altering the conditions that produced historical fire regimes and facilitating increased recent wildfire activity in the northwestern United States. Understanding the impacts of changing fire regimes on forest recruitment and succession, species distributions, carbon cycling, and ecosystem services is critical, but challenging across broad spatial scales. One important and understudied aspect of fire regimes is the unburned area within fire perimeters; these areas can function as fire refugia across the landscape during and after wildfire by providing habitat and seed sources. With increasing fire activity, there is speculation that fire intensity and...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Drought, Fire and Extreme Weather,
Drought, Fire and Extreme Weather,
Fire,
Fire,
Landsat, All tags...
Landscapes,
Landscapes,
Northwest CASC,
Northwest CASC,
Other Landscapes,
Other Landscapes,
fire atlas,
fire refugia,
fire severity,
unburned islands,
wildfire, Fewer tags
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Abstract (from AGU100): In complex terrain, drifting snow contributes to ecohydrologic landscape heterogeneity and ecological refugia. In this study, we assessed the climate sensitivity of hydrological dynamics in a semiarid mountainous catchment in the snow‐to‐rain transition zone. This catchment includes a distinct snow drift‐subsidized refugium that comprises a small portion (14.5%) of the watershed but accounts for a disproportionate amount (modeled average 56%) of hydrological flux generation. We conducted climate sensitivity experiments using a physically based hydrologic model to assess responses of a suite of hydrologic metrics across the watershed. Experiments with an imposed 3.5 °C warming showed reductions...
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This project is an effort to understand the projections of climate change on the Northwest's climate,hydrology and vegetation.
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Abstract (from http://www.publish.csiro.au/paper/WF15082.htm): The Monitoring Trends in Burn Severity project is a comprehensive fire atlas for the United States that includes perimeters and severity data for all fires greater than a particular size (~400 ha in the western US, and ~200 ha in the eastern US). Although the database was derived for management purposes, the scientific community has expressed interest in its research capacity. As with any derived data, it is critical to understand inherent limitations to maximise the utility of the dataset without compromising the inferences. The classified severity product in particular is of limited use to research due to a lack of both consistency in developing class...
Categories: Publication;
Types: Citation;
Tags: Burn Severity,
Drought, Fire and Extreme Weather,
Drought, Fire and Extreme Weather,
Fire,
Fire, All tags...
LANDFIRE,
Landscapes,
Landscapes,
Northwest CASC,
Other Landscapes, Fewer tags
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The Integrated Scenarios (IS) of the Future Northwest Environment project resulted in several datasets describing projected changes in climate, hydrology and vegetation for the 21st century over the Northwestern US. At the conclusion of the IS project in August 2014, it was recognized that many data users would be challenged to use the IS data due to 1) the sheer size of these datasets (~ 20 Terabytes of data), 2) the specific file format (netCDF) of the IS data, and 3) the unfamiliarity of appropriate methods for analyzing climate scenarios. To address these issues, the Integrated Scenarios Tools project was funded with the aim of creating a website for the IS project focusing on providing: 1) information on and...
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