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.

CAC will be hosting the 2015 Atmospheric Composition and Chemistry Observations and Modelling Conference (ACCOMC) in November. More information is available on the meeting website.

Recent CAC News

September 2015: A new paper involving CAC member Jenny Fisher led by collaborators at Harvard University was published in Atmospheric Chemistry and Physics. The study used a high-resolution model combined with observations from the NASA SEAC4RS aircraft campaign in the Southeast US to explain aerosol sources and trends.

August 2015: Research led by the Centre for Atmospheric Chemistry is highlighted in the new 40 Years of Research Impact booklet. "Analysing Atmospheric Composition" (page 46) profiles CAC's contribution to atmospheric composition measurements.

August 2015: A new paper involving CAC member Jenny Fisher has just been published in Geophysical Research Letters. The study uses long term records of atmospheric mercury in the Arctic and northern midlatitudes, combined with a biogeochemical model, to identify a declining trend in Arctic Ocean mercury that may alleviate exposure risks for northern populations. The work is also highlighted in the GeoSpace Blog.

August 2015: A new study led by CAC PhD student Doreena Dominick has been published in Atmospheric Environment. The study examines the influence of north-easterly winds on atmospheric particles using data from a three-month measurement campaign in a tropical coastal environment in Malaysia. Doreena was also a co-author on another recent paper published in the Journal of Environmental Sciences in July.

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.