Wildfires drive interannual variability of organic carbon aerosol in the western U.S. in summer

  title={Wildfires drive interannual variability of organic carbon aerosol in the western U.S. in summer},
  author={Dominick V. Spracklen and Jennifer A. Logan and Loretta J. Mickley and Rokjin J. Park and Rosemarie Yevich and Anthony LeRoy Westerling and Daniel A. Jaffe},
  journal={Geophysical Research Letters},
Forest wildfire area burned in the western U.S. has increased in recent decades resulting in a substantial organic carbon (OC) source with large interannual variability. We derive OC emissions from wildfires using data for area burned for 1980–2004 and ecosystem specific fuel loadings. For the period 1989–2004 we analyze OC observations in the western U.S. from the IMPROVE network and use a global chemical transport model to simulate OC concentrations. Modeled and observed OC concentrations are… 

Figures from this paper

Impacts of climate change from 2000 to 2050 on wildfire activity and carbonaceous aerosol concentrations in the western United States

[1] We investigate the impact of climate change on wildfire activity and carbonaceous aerosol concentrations in the western United States. We regress observed area burned onto observed meteorological

Wildfire influences on the variability and trend of summer surface ozone in the mountainous western United States

Abstract. Increasing wildfire activities in the mountainous western US may present a challenge for the region to attain a recently revised ozone air quality standard in summer. Using current Eulerian

Influence of fires on O3 concentrations in the western U.S.

The presence of fire is a more important predictor for O3 than is temperature, and large fire years exhibited widespread enhanced O3, reflecting the balance between O3 production and destruction in a high NOx environment.

Biomass burning contribution to black carbon in the Western United States Mountain Ranges

Forest fires are an important source to carbonaceous aerosols in the Western United States (WUS). We quantify the relative contribution of biomass burning to black carbon (BC) in the WUS mountain

Interannual Variations in PM 2 . 5 due to Wildfires in the Western United States

In this study we have evaluated the role of wildfires on concentrations of fine particle (d < 2.5 μm) organic carbon (OC) and particulate mass (PM2.5) in the Western United States for the period

Analysis of aerosol composition data for western United States wildfires between 2005 and 2015: Dust emissions, chloride depletion, and most enhanced aerosol constituents

Examining major wildfires in the western United States between 2005 and 2015 to determine which species exhibit the highest percent change in mass concentration on day of peak fire influence relative to preceding nonfire days finds dust was significantly enhanced in wildfire plumes, based on significant enhancements in fine soil components.

Nationwide summer peaks of OC/EC ratios in the contiguous United States

Expanding number of Western US urban centers face declining summertime air quality due to enhanced wildland fire activity

Combining multiple sources of information on atmospheric composition, wildland fire emissions, and fire area burned, we link decadal air quality trends in Western US urban centers with wildland fire

Spatial and Temporal Trends in PM 2 . 5 Organic and Elemental Carbon across the United States

The rural/remote IMPROVE network (Interagency Monitoring of Protected Visual Environments) and the Environmental Protection Agency’s urban Chemical Speciation Network have measured PM 2.5 organic



Warming and Earlier Spring Increase Western U.S. Forest Wildfire Activity

It is shown that large wildfire activity increased suddenly and markedly in the mid-1980s, with higher large-wildfire frequency, longer wildfire durations, and longer wildfire seasons.

Sources of carbonaceous aerosols over the United States and implications for natural visibility

emissions, captures most of the variance in the observations (R 2 = 0.84 for EC, 0.67 for OC) with a low bias of 15% for EC and 26% for OC. Multiple linear regression to fit the IMPROVE data yields

Biogenic secondary organic aerosol over the United States: Comparison of climatological simulations with observations

[1] Understanding the effects of global climate change on regional air quality is central in future air quality planning. We report here on the use of the Goddard Institute for Space Studies (GISS)

Influences of boreal fire emissions on Northern Hemisphere atmospheric carbon and carbon monoxide

There were large interannual variations in burned area in the boreal region (ranging between 3.0 and 23.6 × 106 ha yr−1) for the period of 1992 and 1995–2003 which resulted in corresponding

Inter‐annual variability of summertime CO concentrations in the Northern Hemisphere explained by boreal forest fires in North America and Russia

Background measurements of Carbon Monoxide in the extra‐tropical Northern Hemisphere during the 1990s showed no clear trends, but significant inter‐annual variations. In this study, the measured


Abstract A 21-yr gridded monthly fire-starts and acres-burned dataset from U.S. Forest Service, Bureau of Land Management, National Park Service, and Bureau of Indian Affairs fire reports recreates

Interannual and seasonal variability of biomass burning emissions constrained by satellite observations

[1] We present a methodology for estimating the seasonal and interannual variation of biomass burning designed for use in global chemical transport models. The average seasonal variation is estimated

Pan‐Arctic enhancements of light absorbing aerosol concentrations due to North American boreal forest fires during summer 2004

[1] During summer of 2004, about 2.7 million hectare of boreal forest burned in Alaska, the largest annual area burned on record, and another 3.1 million hectare burned in Canada. This study explores

Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature)

Abstract. Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy

A global model of natural volatile organic compound emissions

Numerical assessments of global air quality and potential changes in atmospheric chemical constituents require estimates of the surface fluxes of a variety of trace gas species. We have developed a