Centre for Atmospheric Chemistry

Welcome to
the Centre for Atmospheric Chemistry

Research at the Centre for Atmospheric Chemistry advances understanding of atmospheric trace gas and aerosol chemistry, atmosphere/biosphere exchange of trace gases, and long term changes in atmospheric composition and chemistry - from the laboratory to the field and at local to global scales.

Over more than 20 years, we have established the most intensive atmospheric composition and chemistry research and training program in Australian universities. We collaborate widely in Australian and international atmospheric science communities including other universities, CSIRO, ANSTO, BOM, federal and state government departments and international networks.

Recent CAC News

January 2016: CAC researchers are beginning 2016 by embarking on a round of new projects after a successful 2015 funding round. In addition to a 5-year Discovery Project (see below), CAC earned the following internal grants for 2016: A Deployable System for Automated Measurements of Greenhouse Gas Total Columns in Remote Environments (Voltaire Velazco, David Griffith); A system for spatially-resolved sampling of atmospheric Volatile Organic Compounds (Nicholas Deutscher, Stephen Wilson); Enabling A Step Change In Mercury Modelling Capabilities In Australia (Jenny Fisher); Southeast Asian TCCON Operations in Preparation for GOSAT-2 Satellite (Voltaire Velazco, David Griffith).

December 2015: CAC research was rated as "well above world standard" in the 2015 Excellence in Research for Australia. CAC earned the top rating of 5 in atmospheric sciences and contributed to additional scores of 5 in various fields of chemistry. 

December 2015: A new paper by former CAC PhD student Rebecca Buchholz (with many other CAC co-authors) was published in Atmospheric Environment! In this work, we explored a multi-year record of surface in situ carbon monoxide, methane, and carbon dioxide at a chemically interesting site in Australia and identified links between composition, emissions, and meteorology.

November 2015: CAC hosted the 2015 Atmospheric Composition and Chemistry Observations and Modelling Conference (ACCOMC) at Murramarang Nature Resort, South Durras, NSW.

October 2015: CAC researchers David Griffith, Nicholas Deutscher, Jenny Fisher, Clare Murphy, and Stephen Wilson -- along with collaborators from the University of Melbourne, CNRS (France), NCAR (US), and BIRA (Belgium) -- received a grant from the Australian Research Council for the 5-year project "Tackling Atmospheric Chemistry Grand Challenges in the Southern Hemisphere." The project will use a combination of ground-based measurements, satellite datasets, and atmospheric models to provide a Southern Hemisphere perspective on a range of current challenges including air quality, oxidation capacity, stratospheric change, and chemistry-climate interactions.

For more updates from CAC, check out our What's Cool page.

CAC Research Themes


Trace Gas Measurements: 

Determining the amounts, sources and sinks of atmospheric trace gases with solar remote sensing, in situ and flux measurements, including operating two sites in the TCCON and NDACC networks.


Modelling and Analysis: 

Using global models and developing advanced analysis methods to interpret measurements, probe datasets, and test theories of atmospheric composition and chemistry.


Laser Photochemistry and Spectroscopy: 

Investigating photodissociation action spectroscopy, radical chemistry and microdroplet dynamics using pulsed-laser spectroscopy and mass spectrometry techniques.


Fire Emissions: 

Using remote-sensing spectrometric techniques to quantify emissions from vegetation fires to the atmosphere.


Agricultural Emissions: 

Developing and applying novel techniques to measure greenhouse gas emissions from agricultural practices and identifying effective strategies to mitigate emissions from the industry.

Radiation - SIPEX

Solar Radiation and Aerosols: 

Following changes in particles in the atmosphere to understand their impact, formation, and fate.