Atmospheric Chemistry Experiment

Name of repository

Atmospheric Chemistry Experiment

Additional name(s)

• ACE
• SCISAT

Repository URL

https://www.ace.uwaterloo.ca/

Subject(s)

• Atmospheric Science and Oceanography
• Atmospheric Science
• Geosciences (including Geography)
• Natural Sciences
• Physical Chemistry of Molecules, Interfaces and Liquids - Spectroscopy, Kinetics
• Physical and Theoretical Chemistry
• Chemistry
• Geodesy, Photogrammetry, Remote Sensing, Geoinformatics, Cartogaphy
• Geophysics and Geodesy

Description

SCISAT, also known as the Atmospheric Chemistry Experiment (ACE), is a Canadian Space Agency small satellite mission for remote sensing of the Earth's atmosphere using solar occultation. The satellite was launched on 12 August 2003 and continues to function perfectly. The primary mission goal is to improve our understanding of the chemical and dynamical processes that control the distribution of ozone in the stratosphere and upper troposphere, particularly in the Arctic. The high precision and accuracy of solar occultation makes SCISAT useful for monitoring changes in atmospheric composition and the validation of other satellite instruments. The satellite carries two instruments. A high resolution (0.02 cm-¹) infrared Fourier transform spectrometer (FTS) operating from 2 to 13 microns (750-4400 cm-¹) is measuring the vertical distribution of trace gases, particles and temperature. This provides vertical profiles of atmospheric constituents including essentially all of the major species associated with ozone chemistry. Aerosols and clouds are monitored using the extinction of solar radiation at 1.02 and 0.525 microns as measured by two filtered imagers. The vertical resolution of the FTS is about 3-4 km from the cloud tops up to about 150 km. Peter Bernath of the University of Waterloo is the principal investigator. A dual optical spectrograph called MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation) covers the 400-1030 nm spectral region and measures primarily ozone, nitrogen dioxide and aerosol/cloud extinction. It has a vertical resolution of about 1-2 km. Tom McElroy of Environment and Climate Change Canada is the principal investigator. ACE data are freely available from the University of Waterloo website. SCISAT was designated an ESA Third Party Mission in 2005. ACE data are freely available through an ESA portal.

Contact

• bernath@uwaterloo.ca
• https://www.ace.uwaterloo.ca/contactus.php

Content type(s)

• Structured graphics
• Scientific and statistical data formats
• Raw data
• Archived data
• other

Keyword(s)

• Arctic
• FTS Fourier Transform Spectrometer
• MAESTRO
• aerospace
• atmosphere
• chemical molecules
• earth's climate
• remote sensing
• space mission
• stratospheric chemistry

Repository type(s)

• disciplinary

Mission statement for designated community

https://www.ace.uwaterloo.ca/mission.php

Research data repository language(s)

• English

Data and/or service provider

• data provider