I. Galbally - Academia.edu (original) (raw)

Papers by I. Galbally

Research paper thumbnail of Gridded global surface ozone metrics for atmospheric chemistry model evaluation

Earth System Science Data, 2016

Research paper thumbnail of Volatile organic compounds in the global atmosphere

Eos, 2009

Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarb... more Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarbons. VOCs play an important role in the chemistry of the atmosphere by influencing ozone and hydroxyl radical (OH) concentrations and the conversion rates of nitrogen oxides (NO x ). Elevated levels of VOCs and NO x have led to an approximate doubling of ozone in the lower troposphere over

Research paper thumbnail of Seasonal cycles of O 3 in the marine boundary layer: Observation and model simulation comparisons

Journal of Geophysical Research: Atmospheres, 2016

Research paper thumbnail of Spatial variability of nitrous oxide emissions from an Australian irrigated dairy pasture

Plant and Soil, 2008

... and soil variables affecting the spatial variability of N2O emissions at paddock scale. Small... more ... and soil variables affecting the spatial variability of N2O emissions at paddock scale. Small, static chambers (mini-chambers) were placed at 100 loca-tions over an 8,100 m2 area of irrigated dairy pasture in northern Victoria, Australia. ...

Research paper thumbnail of FTIR in the Paddock: Trace gas soil flux measurements using FTIR spectroscopy

ABSTRACT We have used FTIR spectroscopy for high precision trace gas analysis combined with micro... more ABSTRACT We have used FTIR spectroscopy for high precision trace gas analysis combined with micrometeorological flux-gradient and chamber methods to measure the fluxes of trace gases CO2,CH4,N2O and CO between agricultural soils and the atmosphere. In flux gradient measurements, vertical profiles of the trace gases were measured every 30 minutes from the ground to 22 m. When combined with independent micrometeorological measurements of heat, water vapor and radiative fluxes, trace gas fluxes from the underlying surface could be determined. In chamber measurements, a closed chamber was placed over the soil surface and the air in the chamber monitored continuously by FTIR spectroscopy. Fluxes were calculated from the time rate of change of concentrations in the chamber after closure. The FTIR measurements were fully automated and ran reliably for several weeks, routinely obtaining precision of 0.1–0.5%.

Research paper thumbnail of Tropospheric Voc Monitoring by Proton Transfer Reaction-Mass Spectrometry (PTR-MS) in a Western Australian Mixed Rural and …

ileaps.org

... Erika Zardin1, Sam Saunders1, Ian Galbally2, Jodi Ariti3 1 University of Western Australia – ... more ... Erika Zardin1, Sam Saunders1, Ian Galbally2, Jodi Ariti3 1 University of Western Australia – Atmospheric and Environmental Chemistry Research Group ... 2. JH Seinfeld and SN Pandis, 1997, Atmospheric chemistry and physiscs : From air pollution to climate change, John Wiley ...

Research paper thumbnail of Sydney Particle Study-Stage-II

Research paper thumbnail of Risk factors for increased BTEX exposure in four Australian cities

Chemosphere, 2007

Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) fo... more Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) found in urban airsheds. Elevated levels of VOCs have been reported in many airsheds at many locations, particularly those associated with industrial activity, wood heater use and heavy traffic. Exposure to some VOCs has been associated with health risks. There have been limited investigations into community exposures to BTEX using personal monitoring to elucidate the concentrations to which members of the community may be exposed and the main contributors to that exposure.

Research paper thumbnail of Acidification and regional air pollution in the tropics

Research paper thumbnail of Spatial variability of N2O emissions and contributing soil factors from an Australian irrigated dairy pasture

Research paper thumbnail of Recent tropospheric ozone changes–A pattern dominated by slow or no growth

Research paper thumbnail of A study of environmental and management drivers of non-CO 2 greenhouse gas emissions in Australian agro-ecosystems

Environmental Sciences, 2005

Australian climate, soils and agricultural management practices are significantly different from ... more Australian climate, soils and agricultural management practices are significantly different from those of the northern hemisphere nations. Consequently, experimental data on greenhouse gas production from European and North American agricultural soils and its interpretation are unlikely to be directly applicable to Australian systems. A programme of studies of non-CO2 greenhouse gas emissions from agriculture has been established that is designed

Research paper thumbnail of Observations of fragmentation of simple organic compounds in proton transfer mass spectrometry measurements

CONFERENCE SERIES, 2009

The mass spectra and branching ratios of the product ions resulting from reaction of hydronium io... more The mass spectra and branching ratios of the product ions resulting from reaction of hydronium ions with 23 volatile organic compounds have been determined at 6 values of E/N. This work is undertaken to clarify what compounds the proton transfer reaction mass ...

Research paper thumbnail of Risk factors for increased BTEX exposure in four Australian cities

Chemosphere, 2007

Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) fo... more Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) found in urban airsheds. Elevated levels of VOCs have been reported in many airsheds at many locations, particularly those associated with industrial activity, wood heater use and heavy traffic. Exposure to some VOCs has been associated with health risks. There have been limited investigations into community exposures to BTEX using personal monitoring to elucidate the concentrations to which members of the community may be exposed and the main contributors to that exposure.

Research paper thumbnail of Tropospheric Ozone Changes

AGU Fall Meeting Abstracts, Dec 1, 2008

Growing recognition of the role of" background" tropospheric ozone on climate forcing a... more Growing recognition of the role of" background" tropospheric ozone on climate forcing and as a boundary condition for air quality changes highlights the importance of obtaining a broad picture of tropospheric ozone changes. Key surface and ozonesonde observing sites with tropospheric ozone measurement records longer than~ 15 years have been selected to characterize longer term tropospheric ozone changes over broad geographic regions. The sites chosen vary from those with minimal impact by local ozone ...

Research paper thumbnail of Tropical land use change and trace gas emissions

Research paper thumbnail of Volatile organic compounds in the global atmosphere

Eos, 2009

Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarb... more Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarbons. VOCs play an important role in the chemistry of the atmosphere by influencing ozone and hydroxyl radical (OH) concentrations and the conversion rates of nitrogen oxides (NO x ). Elevated levels of VOCs and NO x have led to an approximate doubling of ozone in the lower troposphere over

Research paper thumbnail of Gridded global surface ozone metrics for atmospheric chemistry model evaluation

Earth System Science Data, 2016

Research paper thumbnail of Volatile organic compounds in the global atmosphere

Eos, 2009

Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarb... more Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarbons. VOCs play an important role in the chemistry of the atmosphere by influencing ozone and hydroxyl radical (OH) concentrations and the conversion rates of nitrogen oxides (NO x ). Elevated levels of VOCs and NO x have led to an approximate doubling of ozone in the lower troposphere over

Research paper thumbnail of Seasonal cycles of O 3 in the marine boundary layer: Observation and model simulation comparisons

Journal of Geophysical Research: Atmospheres, 2016

Research paper thumbnail of Spatial variability of nitrous oxide emissions from an Australian irrigated dairy pasture

Plant and Soil, 2008

... and soil variables affecting the spatial variability of N2O emissions at paddock scale. Small... more ... and soil variables affecting the spatial variability of N2O emissions at paddock scale. Small, static chambers (mini-chambers) were placed at 100 loca-tions over an 8,100 m2 area of irrigated dairy pasture in northern Victoria, Australia. ...

Research paper thumbnail of FTIR in the Paddock: Trace gas soil flux measurements using FTIR spectroscopy

ABSTRACT We have used FTIR spectroscopy for high precision trace gas analysis combined with micro... more ABSTRACT We have used FTIR spectroscopy for high precision trace gas analysis combined with micrometeorological flux-gradient and chamber methods to measure the fluxes of trace gases CO2,CH4,N2O and CO between agricultural soils and the atmosphere. In flux gradient measurements, vertical profiles of the trace gases were measured every 30 minutes from the ground to 22 m. When combined with independent micrometeorological measurements of heat, water vapor and radiative fluxes, trace gas fluxes from the underlying surface could be determined. In chamber measurements, a closed chamber was placed over the soil surface and the air in the chamber monitored continuously by FTIR spectroscopy. Fluxes were calculated from the time rate of change of concentrations in the chamber after closure. The FTIR measurements were fully automated and ran reliably for several weeks, routinely obtaining precision of 0.1–0.5%.

Research paper thumbnail of Tropospheric Voc Monitoring by Proton Transfer Reaction-Mass Spectrometry (PTR-MS) in a Western Australian Mixed Rural and …

ileaps.org

... Erika Zardin1, Sam Saunders1, Ian Galbally2, Jodi Ariti3 1 University of Western Australia – ... more ... Erika Zardin1, Sam Saunders1, Ian Galbally2, Jodi Ariti3 1 University of Western Australia – Atmospheric and Environmental Chemistry Research Group ... 2. JH Seinfeld and SN Pandis, 1997, Atmospheric chemistry and physiscs : From air pollution to climate change, John Wiley ...

Research paper thumbnail of Sydney Particle Study-Stage-II

Research paper thumbnail of Risk factors for increased BTEX exposure in four Australian cities

Chemosphere, 2007

Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) fo... more Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) found in urban airsheds. Elevated levels of VOCs have been reported in many airsheds at many locations, particularly those associated with industrial activity, wood heater use and heavy traffic. Exposure to some VOCs has been associated with health risks. There have been limited investigations into community exposures to BTEX using personal monitoring to elucidate the concentrations to which members of the community may be exposed and the main contributors to that exposure.

Research paper thumbnail of Acidification and regional air pollution in the tropics

Research paper thumbnail of Spatial variability of N2O emissions and contributing soil factors from an Australian irrigated dairy pasture

Research paper thumbnail of Recent tropospheric ozone changes–A pattern dominated by slow or no growth

Research paper thumbnail of A study of environmental and management drivers of non-CO 2 greenhouse gas emissions in Australian agro-ecosystems

Environmental Sciences, 2005

Australian climate, soils and agricultural management practices are significantly different from ... more Australian climate, soils and agricultural management practices are significantly different from those of the northern hemisphere nations. Consequently, experimental data on greenhouse gas production from European and North American agricultural soils and its interpretation are unlikely to be directly applicable to Australian systems. A programme of studies of non-CO2 greenhouse gas emissions from agriculture has been established that is designed

Research paper thumbnail of Observations of fragmentation of simple organic compounds in proton transfer mass spectrometry measurements

CONFERENCE SERIES, 2009

The mass spectra and branching ratios of the product ions resulting from reaction of hydronium io... more The mass spectra and branching ratios of the product ions resulting from reaction of hydronium ions with 23 volatile organic compounds have been determined at 6 values of E/N. This work is undertaken to clarify what compounds the proton transfer reaction mass ...

Research paper thumbnail of Risk factors for increased BTEX exposure in four Australian cities

Chemosphere, 2007

Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) fo... more Benzene, toluene, ethylbenzene and xylenes (BTEX) are common volatile organic compounds (VOCs) found in urban airsheds. Elevated levels of VOCs have been reported in many airsheds at many locations, particularly those associated with industrial activity, wood heater use and heavy traffic. Exposure to some VOCs has been associated with health risks. There have been limited investigations into community exposures to BTEX using personal monitoring to elucidate the concentrations to which members of the community may be exposed and the main contributors to that exposure.

Research paper thumbnail of Tropospheric Ozone Changes

AGU Fall Meeting Abstracts, Dec 1, 2008

Growing recognition of the role of" background" tropospheric ozone on climate forcing a... more Growing recognition of the role of" background" tropospheric ozone on climate forcing and as a boundary condition for air quality changes highlights the importance of obtaining a broad picture of tropospheric ozone changes. Key surface and ozonesonde observing sites with tropospheric ozone measurement records longer than~ 15 years have been selected to characterize longer term tropospheric ozone changes over broad geographic regions. The sites chosen vary from those with minimal impact by local ozone ...

Research paper thumbnail of Tropical land use change and trace gas emissions

Research paper thumbnail of Volatile organic compounds in the global atmosphere

Eos, 2009

Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarb... more Volatile organic compounds (VOCs) include saturated, unsaturated, and other substituted hydrocarbons. VOCs play an important role in the chemistry of the atmosphere by influencing ozone and hydroxyl radical (OH) concentrations and the conversion rates of nitrogen oxides (NO x ). Elevated levels of VOCs and NO x have led to an approximate doubling of ozone in the lower troposphere over