气候变化领域集成服务门户(CCPortal): Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal

CCPortal

DOI	10.1029/2020JD034106
	Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal
	Villalba G.; Whelan M.; Montzka S.A.; Cameron-Smith P.J.; Fischer M.; Zumkehr A.; Hilton T.; Stinecipher J.; Baker I.; Bambha R.P.; Michelsen H.A.; LaFranchi B.W.; Estruch C.; Campbell E.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:13
英文摘要	Cities are implementing additional urban green as a means to capture CO2 and become more carbon neutral. However, cities are complex systems where anthropogenic and natural components of the CO2 budget interact with each other, and the ability to measure the efficacy of such measures is still not properly addressed. There is still a high degree of uncertainty in determining the contribution of the vegetation signal, which furthermore confounds the use of CO2 mole fraction measurements for inferring anthropogenic emissions of CO2. Carbonyl sulfide (OCS) is a tracer of photosynthesis which can aid in constraining the biosphere signal. This study explores the potential of using OCS to track the urban biosphere signal. We used the Sulfur Transport and dEposition Model (STEM) to simulate the OCS concentrations and the Carnegie Ames Stanford Approach ecosystem model to simulate global CO2 fluxes over the Bay Area of San Francisco during March 2015. Two observation towers provided measurements of OCS and CO2: The Sutro tower in San Francisco (upwind from the area of study providing background observations), and a tower located at Sandia National Laboratories in Livermore (downwind of the highly urbanized San Francisco region). Our results show that the STEM model works better under stable marine influence, and that the boundary layer height and entrainment are driving the diurnal changes in OCS and CO2 at the downwind Sandia site. However, the STEM model needs to better represent the transport and boundary layer variability, and improved estimates of gross primary productivity for characterizing the urban biosphere signal are needed. © 2021. The Authors.
英文关键词	anthropogenic emissions; boundary layer; carbonyl sulfide (OCS); CO2 mixing ratio; GPP; transport model
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237137
作者单位	Institute of Environmental Science and Technology (ICTA), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain; Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, United States; NOAA/Global Monitoring Laboratory, Boulder, CO, United States; Lawrence Livermore National Laboratory, Livermore, CA, United States; Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; University of California, Merced, CA, United States; Environmental Studies Department, University of California, Santa Cruz, CA, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Sandia National Laboratories, Livermore, CA, United States; Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, United States; Aclima, Inc., San Fr...
推荐引用方式 GB/T 7714	Villalba G.,Whelan M.,Montzka S.A.,et al. Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal[J],2021,126(13).
APA	Villalba G..,Whelan M..,Montzka S.A..,Cameron-Smith P.J..,Fischer M..,...&Campbell E..(2021).Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Villalba G.,et al."Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal".Journal of Geophysical Research: Atmospheres 126.13(2021).