DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Vertical characterization of highly oxygenated molecules (HOMs) below and above a boreal forest canopy

Journal Article · · Atmospheric Chemistry and Physics (Online)
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2];  [2];  [2];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3];  [2]; ORCiD logo [2];  [2]; ORCiD logo [4];  [2];  [5]; ORCiD logo [2]; ORCiD logo [2] more »; ORCiD logo [2]; ORCiD logo [2] « less
  1. Univ. of Helsinki (Finland). Inst. for Atmospheric and Earth System Research/Physics; DOE/OSTI
  2. Univ. of Helsinki (Finland). Inst. for Atmospheric and Earth System Research/Physics
  3. Nanjing Univ., Nanjing (China). CMA-NJU Joint Lab. for Climate Prediction Studies, Inst. for Climate and Global Change Research
  4. Duke Univ., Durham, NC (United States)
  5. Univ. of Helsinki (Finland). Inst. for Atmospheric and Earth System Research/Physics; Aerodyne Research, Inc., Billerica, MA (United States)

While the role of highly oxygenated molecules (HOMs) in new particle formation (NPF) and secondary organic aerosol (SOA) formation is not in dispute, the interplay between HOM chemistry and atmospheric conditions continues to draw significant research attention. During the Influence of Biosphere-Atmosphere Interactions on the Reactive Nitrogen budget (IBAIRN) campaign in September 2016, profile measurements of neutral HOMs below and above the forest canopy were performed for the first time at the boreal forest SMEAR II station. The HOM concentrations and composition distributions below and above the canopy were similar during daytime, supporting a well-mixed boundary layer approximation. However, much lower nighttime HOM concentrations were frequently observed at ground level, which was likely due to the formation of a shallow decoupled layer below the canopy. Near the ground HOMs were influenced by the changes in the precursors and oxidants and enhancement of the loss on surfaces in this layer, while the HOMs above the canopy top were not significantly affected. Our findings clearly illustrate that near-ground HOM measurements conducted under stably stratified conditions at this site might only be representative of a small fraction of the entire nocturnal boundary layer. This could, in turn, influence the growth of newly formed particles and SOA formation below the canopy where the large majority of measurements are typically conducted.

Research Organization:
Duke Univ., Durham, NC (United States)
Sponsoring Organization:
Academy of Finland Center of Excellence in Atmospheric Science; European Research Council (ERC); National Science Foundation (NSF); USDOE Office of Science (SC); University of Helsinki; Vilho, Yrjö ja Kalle Väisälä Foundation
Grant/Contract Number:
SC0011461
OSTI ID:
1611630
Journal Information:
Atmospheric Chemistry and Physics (Online), Journal Name: Atmospheric Chemistry and Physics (Online) Journal Issue: 23 Vol. 18; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

The Influence of Hilly Terrain on Canopy-Atmosphere Carbon Dioxide Exchange journal January 2006
A large source of low-volatility secondary organic aerosol journal February 2014
The role of low-volatility organic compounds in initial particle growth in the atmosphere journal May 2016
Determining the contribution of vertical advection to the net ecosystem exchange at Hyytiälä forest, Finland journal January 2007
New particle formation in the free troposphere: A question of chemistry and timing journal May 2016
On the formation, growth and composition of nucleation mode particles journal January 2001
Physical characterization of aerosol particles during nucleation events journal January 2001
Composition and temporal behavior of ambient ions in the boreal forest journal January 2010
Ozone deposition into a boreal forest over a decade of observations: evaluating deposition partitioning and driving variables journal January 2012
Formation of highly oxidized multifunctional compounds: autoxidation of peroxy radicals formed in the ozonolysis of alkenes – deduced from structure–product relationships journal January 2015
Long-term analysis of clear-sky new particle formation events and nonevents in Hyytiälä journal January 2017
Observations of ozone depletion events in a Finnish boreal forest journal January 2018
Technical Note: Quantitative long-term measurements of VOC concentrations by PTR-MS – measurement, calibration, and volume mixing ratio calculation methods journal January 2008
Rapid Autoxidation Forms Highly Oxidized RO 2 Radicals in the Atmosphere journal October 2014
Accretion Product Formation from Self- and Cross-Reactions of RO 2 Radicals in the Atmosphere journal March 2018
Highly Oxygenated Molecules from Atmospheric Autoxidation of Hydrocarbons: A Prominent Challenge for Chemical Kinetics Studies: HIGHLY OXYGENATED MOLECULES FROM ATMOSPHERIC AUTOXIDATION OF HYDROCARBONS journal September 2017
The Influence of Hilly Terrain on Canopy-Atmosphere Carbon Dioxide Exchange journal January 2006
Nocturnal subcanopy flow regimes and missing carbon dioxide journal January 2012
Partitioning ozone fluxes between canopy and forest floor by measurements and a multi-layer model journal May 2013
Evolution of the nocturnal decoupled layer in a pine forest canopy journal June 2013
Modeling the Charging of Highly Oxidized Cyclohexene Ozonolysis Products Using Nitrate-Based Chemical Ionization journal May 2015
The Formation of Highly Oxidized Multifunctional Products in the Ozonolysis of Cyclohexene journal October 2014
Rate Constants for the Reactions of XO 3 - (H 2 O) n (X = C, HC, and N) and NO 3 - (HNO 3 ) n with H 2 SO 4 :  Implications for Atmospheric Detection of H 2 SO 4 journal October 1997
Autoxidation of Organic Compounds in the Atmosphere journal September 2013
Nocturnal Boundary-Layer Regimes journal August 1998
Shallow Drainage Flows journal November 2001
On the formation, growth and composition of nucleation mode particles journal September 2001
A large source of low-volatility secondary organic aerosol journal February 2014
Ion-induced nucleation of pure biogenic particles journal May 2016
The role of low-volatility organic compounds in initial particle growth in the atmosphere journal May 2016
Laboratory studies of organic peroxy radical chemistry: an overview with emphasis on recent issues of atmospheric significance journal January 2012
Two phenomenological constants explain similarity laws in stably stratified turbulence journal February 2014
Determining the contribution of vertical advection to the net ecosystem exchange at Hyytiälä forest, Finland journal January 2007
H 2 O and CO 2 fluxes at the floor of a boreal pine forest journal January 2008
Direct Observations of Atmospheric Aerosol Nucleation journal February 2013
New particle formation in the free troposphere: A question of chemistry and timing journal May 2016
Turbulence in and above Plant Canopies journal January 1981
On the formation, growth and composition of nucleation mode particles journal January 2001
Physical characterization of aerosol particles during nucleation events journal January 2001
Determining the contribution of vertical advection to the net ecosystem exchange at Hyytiälä forest, Finland journal November 2007
H 2 O and CO 2 fluxes at the floor of a boreal pine forest journal April 2008
Ion-induced nucleation of pure biogenic particles text January 2016
Formation of highly oxygenated organic molecules from aromatic compounds text January 2018
Composition and temporal behavior of ambient ions in the boreal forest journal January 2010
Ozone deposition into a boreal forest over a decade of observations: evaluating deposition partitioning and driving variables journal January 2012
Atmospheric sulphuric acid and neutral cluster measurements using CI-APi-TOF journal January 2012
Gas phase formation of extremely oxidized pinene reaction products in chamber and ambient air journal January 2012
Characterization of a boreal convective boundary layer and its impact on atmospheric chemistry during HUMPPA-COPEC-2010 journal January 2012
Dependence of particle nucleation and growth on high-molecular-weight gas-phase products during ozonolysis of α-pinene journal January 2013
Formation of highly oxidized multifunctional compounds: autoxidation of peroxy radicals formed in the ozonolysis of alkenes – deduced from structure–product relationships journal January 2015
Source characterization of highly oxidized multifunctional compounds in a boreal forest environment using positive matrix factorization journal January 2016
Observation of new particle formation and measurement of sulfuric acid, ammonia, amines and highly oxidized organic molecules at a rural site in central Germany journal January 2016
The role of highly oxygenated molecules (HOMs) in determining the composition of ambient ions in the boreal forest journal January 2017
Long-term analysis of clear-sky new particle formation events and nonevents in Hyytiälä journal January 2017
Formation of highly oxygenated organic molecules from aromatic compounds journal January 2018
Observations of ozone depletion events in a Finnish boreal forest journal January 2018
Contribution of mixing in the ABL to new particle formation based on observations journal January 2007
Technical Note: Quantitative long-term measurements of VOC concentrations by PTR-MS – measurement, calibration, and volume mixing ratio calculation methods journal January 2008
Vertical advection and nocturnal deposition of ozone over a boreal pine forest journal January 2009
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events journal January 2009
A high-resolution mass spectrometer to measure atmospheric ion composition journal January 2010
Characterization of the mass-dependent transmission efficiency of a CIMS journal January 2016
Chemodiversity of a Scots pine stand and implications for terpene air concentrations journal January 2012
Data For "Vertical Characterization Of Highly Oxygenated Molecules (Homs) Below And Above A Boreal Forest Canopy" dataset January 2018
Data For "Vertical Characterization Of Highly Oxygenated Molecules (Homs) Below And Above A Boreal Forest Canopy" dataset January 2018

Cited By (4)

Highly Oxygenated Organic Molecules (HOM) from Gas-Phase Autoxidation Involving Peroxy Radicals: A Key Contributor to Atmospheric Aerosol journal January 2019
Alkyl nitrates in the boreal forest: formation via the NO3-, OH- and O3-induced oxidation of biogenic volatile organic compounds and ambient lifetimes journal January 2019
Vertical profiles of sub-3 nm particles over the boreal forest journal January 2019
A novel approach for simple statistical analysis of high-resolution mass spectra journal January 2019