气候变化领域集成服务门户(CCPortal): Wildfire smoke in the lower stratosphere identified by in situ CO observations

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DOI	10.5194/acp-20-13985-2020
	Wildfire smoke in the lower stratosphere identified by in situ CO observations
	Hooghiem J.J.D.; Elena Popa M.; Röckmann T.; Groob J.-U.; Tritscher I.; Müller R.; Kivi R.; Chen H.
发表日期	2020
ISSN	16807316
起始页码	13985
结束页码	14003
卷号	20 期号:22
英文摘要	Wildfires emit large quantities of aerosols and trace gases, which occasionally reach the lower stratosphere. In August 2017, several pyro-cumulonimbus events injected a large amount of smoke into the stratosphere, observed by lidar and satellites. Satellite observations are in general the main method of detecting these events since in situ aircraft-or balloon-based measurements of atmospheric composition at higher altitudes are not made frequently enough. This work presents accidental balloon-borne trace gas observations of wildfire smoke in the lower stratosphere, identified by enhanced CO mole fractions at approximately 13.6 km. In addition to CO mole fractions, CO2 mole fractions and isotopic composition of CO (δ13C and δ18O) have been measured in air samples, from both the wildfire plume and background, collected using an Air-Core and a lightweight stratospheric air sampler (LISA) flown on a weather balloon from Sodankyla (4-7 September 2017; 67.37° N, 26.63° E; 179ma.m.s.l.), Finland. The greenhouse gas enhancement ratio (ΔCO : ΔCO2) and the isotopic signature based on Δ13C(CO) and Δ18O(CO) independently identify wildfire emissions as the source of the stratospheric CO enhancement. Back-trajectory analysis was performed with the Chemical Lagrangian Model of the Stratosphere (CLaMS), tracing the smoke's origin to wildfires in British Columbia with an injection date of 12 August 2017. The trajectories are corrected for vertical displacement due to heating of the wildfire aerosols, by observations made by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument. Knowledge of the age of the smoke allowed for a correction of the enhancement ratio, ΔCO : ΔCO2, for the chemical removal of CO by OH. The stable isotope observations were used to estimate the amount of tropospheric air in the plume at the time of observation to be about 45±21 %. Finally, the plume extended over 1 km in altitude, as inferred from the observations. © 2020 Author(s).
语种	英语
scopus关键词	altitude; atmospheric chemistry; carbon monoxide; in situ measurement; isotopic composition; smoke; stratosphere; wildfire; British Columbia; Canada; Finland; Lappi [Finland]; Sodankyla; Columbia; Satellites
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152808
作者单位	Centre for Isotope Research (CIO), Energy and Sustainability Institute Groningen (ESRIG), University of Groningen, Nijenborgh 6, Groningen, 9747 AG, Netherlands; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, Utrecht, 3508 TA, Netherlands; Institute of Energy and Climate Research (IEK-7), Forschungszentrum Jülich, Jülich, Germany; Space and Earth Observation Centre, Finnish Meteorological Institute (FMI), Tähteläntie 62, Sodankylä, 99600, Finland
推荐引用方式 GB/T 7714	Hooghiem J.J.D.,Elena Popa M.,Röckmann T.,et al. Wildfire smoke in the lower stratosphere identified by in situ CO observations[J],2020,20(22).
APA	Hooghiem J.J.D..,Elena Popa M..,Röckmann T..,Groob J.-U..,Tritscher I..,...&Chen H..(2020).Wildfire smoke in the lower stratosphere identified by in situ CO observations.Atmospheric Chemistry and Physics,20(22).
MLA	Hooghiem J.J.D.,et al."Wildfire smoke in the lower stratosphere identified by in situ CO observations".Atmospheric Chemistry and Physics 20.22(2020).