Fact Sheet / Brief
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Public land management agencies are under increasing pressure to consider climate change impacts in their land-use planning process. As a first step, many agencies are conducting vulnerability assessments to identify the components of an ecosystem, or conservation targets, most at-risk from climate change. Vulnerability assessment is the first step towards a climate change adaptation plan.
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Smoke is challenging. It can be lofted high into the atmosphere to interact with cloud processes. It can smolder near the ground, depositing emissions. The combination of aerosols and trace gases create their own chemical mix, with reactions that are as yet unidentified. Temperature and atmospheric water content interact with the smoke plume and fog processes. Smoke also blocks the transmission of solar radiation, hindering photolysis reactions. Many of the trace gases emitted from wildland fires have yet to be identified, as do the intermediary products produced in a plume. With the outlook for more wildfires in the future, especially in a changing climate—and with tighter health standards—understanding these processes will become more critical in the years to come.
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The climate of the US is strongly connected to the changing global climate. The statements below highlight past, current, and projected climate changes for the US and the globe.
Global annually averaged surface air temperature has increased by about 1.8°F (1.0°C) over the last 115 years (1901–2016). This period is now the warmest in the history of modern civilization. The last few years have also seen record-breaking, climate-related weather extremes, and the last three years have been the warmest years on record for the globe. These trends are expected to continue over climate timescales.
This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.
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This brief provides an overview of the JFSP’s mission, values, science delivery focus, and unique role in the greater fire science community – including leveraging partnerships for the greater good.
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This study used a team with widely diverse expertise that gathered information from private, state, federal, and tribal landowners about their current forest and fire management practices and then built a computer model that can be used to facilitate collaborative decision making about forest management in fire-prone environments. The model allows stakeholders to compare alternative management scenarios to see how various approaches affect wildfire behavior, risk, and the associated delivery of valued ecosystem services. The model is now being used with two forest collaborative groups in central Oregon to help stakeholders understand the potential tradeoffs associated with management options.
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In this paper, the authors describe an approach to facilitate development and implementation of climate change adaptation options in forest management which they applied to a case study area in southwestern Oregon, USA. Their approach relied on participation of local specialists across multiple organizations to establish a science–manager partnership, development of climate change education in multiple formats, hands-on development of adaptation options, and application of tools to incorporate climate change in planned projects.
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Researchers measured 14 transects across two different fuel treatment types on three different units. For both fuel treatment types, only ladder fuels had been removed. They found that while severity was reduced at all sites, the spatial distribution of fire severity within the treatment areas varied by treatment type and unit as well as which fire severity metric they were analyzing. They found fuel treatments reduced fire severity anywhere from -7 m to 533 m into the treatment area. Kennedy and Johnson (2014) caution that local site conditions, topography and vegetation type will be other sources of variation in fire severity.
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U.S. Geological Survey scientists analyzed a collection of climate, fire and erosion models for 471 large watersheds throughout the western U.S. They found that by 2050, the amount of sediment in more than one-third of watersheds could at least double. In nearly nine-tenths of the watersheds, sedimentation is projected to increase by more than 10 percent.
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This brief summarizes work by researchers who modeled exactly how problematic the grass-fire cycle could be for non-fire-adapted desert shrublands under three sets of climate conditions. Specifically, three different degrees of inter-annual precipitation variability (i.e., none, medium, and extreme climate change variability; sigma = 0 to 0.8) and related invasive grass cover biomass was modeled to theoretically induce land degradation.
To highlight the effectiveness and on-going success of this multi-faceted working lands approach, they’ve introduced the “Healthy Sagebrush Communities” website, story map, and poster.
The Natural Resources Conservation Service (NRCS), through its Sage Grouse Initiative (SGI), is there to empower ranchers to make well-balanced improvements on their ranching operations that are good for wildlife living in sagebrush country, as well as their business’s bottom line.