Welcome to the homepage for the Atmospheric Chemistry Experiment

The Atmospheric Chemistry Experiment (ACE) is a satellite mission on-board the Canadian satellite SCISAT that takes measurements of the Earth's atmosphere.

The measurements consist of spectra and images that are used to investigate chemical and dynamical processes in our atmosphere, with a particular emphasis on ozone depletion in the Arctic stratosphere.

Dr. Peter Bernath from the Department of Chemistry at the University of Waterloo is the Mission Scientist.

Recent Publications using ACE data:

Jeffery, et al.
Validation of the version 4.5 MAESTRO ozone and NO2 measurements
Atmospheric Measurement Techniques, 18(), 569, ; doi: 10.5194/amt-18-569-2025
URL, PDF, BibTex

Salawitch, et al.
The Imminent Data Desert: The Future of Stratospheric Monitoring in a Rapidly Changing World
Bulletin of the American Meteorological Society, 106(), E540, ; doi: 10.1175/BAMS-D-23-0281.1
URL, PDF, BibTex

Chrysanthou, et al.
Hemispheric Asymmetry in Stratospheric Trends of HCl and Ozone: Impact of Chemical Feedback on Ozone Recovery
Journal of Geophysical Research: Atmospheres, 130(), e2024JD042161, ; doi: 10.1029/2024JD042161
URL, PDF, BibTex

Yan, et al.
Transport into the polar stratosphere from the Asian monsoon region
Atmospheric Chemistry and Physics, 25(), 1289, ; doi: 10.5194/acp-25-1289-2025
URL, PDF, BibTex

Dubé, et al.
Hemispheric asymmetry in recent stratospheric age of air changes
Atmospheric Chemistry and Physics, 25(), 1433, ; doi: 10.5194/acp-25-1433-2025
URL, PDF, BibTex

Bernath, et al.
Spectra of Atoms and Molecules: Fifth Edition
Oxford University Press, None(), None, ; doi: 9780197754498
URL, PDF, BibTex

Pastorek, et al.
Comparison of atmospheric river-related phenomena with ACE satellite data
Journal of Quantitative Spectroscopy and Radiative Transfer, 333(), 109321, ; doi: 10.1016/j.jqsrt.2024.109321
URL, PDF, BibTex

Dodangodage, et al.
Atmospheric Chemistry Experiment (ACE) satellite observations of aerosols and SO2 emissions from the 2024 Ruang volcanic eruption
Journal of Quantitative Spectroscopy and Radiative Transfer, 333(), 109333, ; doi: 10.1016/j.jqsrt.2024.109333
URL, PDF, BibTex

Bernath, et al.
Sulfur dioxide sources in the stratosphere
Journal of Quantitative Spectroscopy and Radiative Transfer, 330(), 109217, ; doi: 10.1016/j.jqsrt.2024.109217
URL, PDF, BibTex

Dodangodage, et al.
The first satellite measurements of HFC-125 by the ACE-FTS: Long-term trends and distribution in the Earth’s upper troposphere and lower stratosphere
Journal of Quantitative Spectroscopy and Radiative Transfer, 330(), 109218, ; doi: 10.1016/j.jqsrt.2024.109218
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