Modelling the effects of the mountain pine beetle on snowmelt in a subalpine forest

Perrot, Danielle; Molotch, N. P.; Musselman, K. N.; Pugh, Evan

doi:10.1002/eco.1329

Cited by 19 publications

(17 citation statements)

References 50 publications

(132 reference statements)

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“…[]:

W = W_{t} \cdot normalexp ((), prefix- 0.36 \cdot {normalL normalA normalI}^{*})

while Perrot et al . [] utilized a linear subcanopy adjustment equation:

W = W_{t} ((), 1 - 0.8 \frac{normalC normalC}{100})

…”

Section: Methodsmentioning

confidence: 99%

Canopy effects on snow sublimation from a central Arizona Basin

Svoma

2017

JGR Atmospheres

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Guided by 30 m terrain and forest cover data, snow sublimation from the Salt River basin in the Southwest U.S. is simulated for years 2008 (wet year) and 2007 (dry year). Downscaled meteorological input correlates well (r~0.80) with independent observations at AmeriFlux sites. Additionally, model correlation and bias with eddy‐covariance vapor flux observations is comparable to previous localized modeling efforts. Upon a 30% reduction in effective leaf area index, canopy sublimation decreases by 1.29 mm (27.0%) and 1.05 mm (23.0%) at the basin scale for the 2008 and 2007 simulations, respectively. Ground sublimation decreases 0.72 mm (4.75%) in 2008 and only 0.17 mm (1.5%) in 2007. Canopy snow‐holding capacity and frequent unloading events at lower elevations limit the variability in canopy sublimation from wet year to dry year at the basin scale. The greater decrease in snowpack sublimation in the wet year is partly due to decreased longwave radiation from the canopy reduction over a more extensive snowpack than the dry year. This decrease overcomes the increased solar radiation and wind speed during winter. A second factor is that a greater extent of the snowpack persisted into spring in 2008 than 2007, and the large increase in shortwave flux upon canopy reduction increases melt rates, reducing duration. Only in heavily forested high elevations (>2900 m above sea level) in 2008 does the snowpack persist long enough into spring to result in increased ground sublimation upon canopy reduction. As forest cover change can occur rapidly, these results are critical from water resource and ecosystem function perspectives.

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“…[]:

W = W_{t} \cdot normalexp ((), prefix- 0.36 \cdot {normalL normalA normalI}^{*})

while Perrot et al . [] utilized a linear subcanopy adjustment equation:

W = W_{t} ((), 1 - 0.8 \frac{normalC normalC}{100})

…”

Section: Methodsmentioning

confidence: 99%

Canopy effects on snow sublimation from a central Arizona Basin

Svoma

2017

JGR Atmospheres

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“…Bethlahmy, 1974;Stednick and Jensen, 2007), in effect making each watershed its own control, and also enables the integration of multiple streams of data, including meteorological, land cover, and geomorphic data. Recently, studies such as Alila et al (2009) andBewley et al (2010) in British Columbia, Rudolph (2012) in Wyoming, Mikkelson et al (2013), and Perrot et al (2014) in Colorado, have simulated areal extents and severity of BB impacts.…”

Section: Bark Beetles (Bb)mentioning

confidence: 98%

Catchment response to bark beetle outbreak and dust-on-snow in the Colorado Rocky Mountains

Livneh

Deems

Buma

et al. 2015

Journal of Hydrology

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“…Hais and Kucera (2008) estimate a 3.5 K increase in temperature in a spruce forest after beetle attack. In addition, snowpack in a beetle-killed forest can also be prolonged (Boon, 2007;Perrot et al, 2012).…”

Section: A R Berg Et Al: the Impact Of Bark Beetle Infestations Onmentioning

confidence: 99%

The impact of bark beetle infestations on monoterpene emissions and secondary organic aerosol formation in western North America

et al. 2013

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Over the last decade, extensive beetle outbreaks in western North America have destroyed over 100 000 km² of forest throughout British Columbia and the western United States. Beetle infestations impact monoterpene emissions through both decreased emissions as trees are killed (mortality effect) and increased emissions in trees under attack (attack effect). We use 14 yr of beetle-induced tree mortality data together with beetle-induced monoterpene emission data in the National Center for Atmospheric Research (NCAR) Community Earth System Model (CESM) to investigate the impact of beetle-induced tree mortality and attack on monoterpene emissions and secondary organic aerosol (SOA) formation in western North America.

Regionally, beetle infestations may have a significant impact on monoterpene emissions and SOA concentrations, with up to a 4-fold increase in monoterpene emissions and up to a 40% increase in SOA concentrations in some years (in a scenario where the attack effect is based on observed lodgepole pine response). Responses to beetle attack depend on the extent of previous mortality and the number of trees under attack in a given year, which can vary greatly over space and time. Simulated enhancements peak in 2004 (British Columbia) and 2008 (US). Responses to beetle attack are shown to be substantially larger (up to a 3-fold localized increase in summertime SOA concentrations) in a scenario based on bark-beetle attack in spruce trees. Placed in the context of observations from the IMPROVE network, the changes in SOA concentrations due to beetle attack are in most cases small compared to the large annual and interannual variability in total organic aerosol which is driven by wildfire activity in western North America. This indicates that most beetle-induced SOA changes are not likely detectable in current observation networks; however, these changes may impede efforts to achieve natural visibility conditions in the national parks and wilderness areas of the western United States

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Modelling the effects of the mountain pine beetle on snowmelt in a subalpine forest

Cited by 19 publications

References 50 publications

Canopy effects on snow sublimation from a central Arizona Basin

Canopy effects on snow sublimation from a central Arizona Basin

Catchment response to bark beetle outbreak and dust-on-snow in the Colorado Rocky Mountains

The impact of bark beetle infestations on monoterpene emissions and secondary organic aerosol formation in western North America

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