DOI: 10.1002/2016GL069599
论文题名: High upward fluxes of formic acid from a boreal forest canopy
作者: Schobesberger S. ; Lopez-Hilfiker F.D. ; Taipale D. ; Millet D.B. ; D'Ambro E.L. ; Rantala P. ; Mammarella I. ; Zhou P. ; Wolfe G.M. ; Lee B.H. ; Boy M. ; Thornton J.A.
刊名: Geophysical Research Letters
ISSN: 0094-8683
EISSN: 1944-8414
出版年: 2016
卷: 43, 期: 17 起始页码: 9342
结束页码: 9351
语种: 英语
英文关键词: biogenic emissions
; boreal forest
; chemical ionization mass spectrometry
; eddy covariance fluxes
; formic acid
Scopus关键词: Boundary layers
; Chemical compounds
; Deposition
; Deposition rates
; Forestry
; Mass spectrometry
; Volatile organic compounds
; Biogenic emission
; Boreal ecosystems
; Boreal forests
; Chemical ionization mass spectrometry
; Chemical production
; Chemical transport models
; Eddy covariance
; Spaceborne observations
; Formic acid
; biogenic emission
; boreal forest
; boundary layer
; dry deposition
; eddy covariance
; flux measurement
; forest canopy
; formic acid
; ionization
; mass spectrometry
; soil emission
; troposphere
; volatile organic compound
英文摘要: Eddy covariance fluxes of formic acid, HCOOH, were measured over a boreal forest canopy in spring/summer 2014. The HCOOH fluxes were bidirectional but mostly upward during daytime, in contrast to studies elsewhere that reported mostly downward fluxes. Downward flux episodes were explained well by modeled dry deposition rates. The sum of net observed flux and modeled dry deposition yields an upward “gross flux” of HCOOH, which could not be quantitatively explained by literature estimates of direct vegetative/soil emissions nor by efficient chemical production from other volatile organic compounds, suggesting missing or greatly underestimated HCOOH sources in the boreal ecosystem. We implemented a vegetative HCOOH source into the GEOS-Chem chemical transport model to match our derived gross flux and evaluated the updated model against airborne and spaceborne observations. Model biases in the boundary layer were substantially reduced based on this revised treatment, but biases in the free troposphere remain unexplained. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987625632&doi=10.1002%2f2016GL069599&partnerID=40&md5=4cf42767b6b68a0551c858cd967299e5
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9646
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Schobesberger S.,Lopez-Hilfiker F.D.,Taipale D.,et al. High upward fluxes of formic acid from a boreal forest canopy[J]. Geophysical Research Letters,2016-01-01,43(17).