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| Titel |
The Canadian Arctic Atmospheric Chemistry Experiment (ACE) Validation Project: Overview and results from ten years of ACE operations |
| VerfasserIn |
Kaley Walker, Kimberly Strong |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250090321
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| Publikation (Nr.) |
 EGU/EGU2014-4549.pdf |
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| Zusammenfassung |
| As of February 2014, the Canadian-led Atmospheric Chemistry Experiment (ACE) satellite
mission has been making measurements of the Earth’s atmosphere for ten years.
As ACE operations have extended beyond the initial two-year mission, there is
a continuing need to validate the trace gas data products from the ACE-Fourier
Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the
Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instruments.
Ground-based measurements provide critical data for the validation of satellite retrievals of
trace gases and for the assessment of long-term stability of these measurements. In
particular, validation comparisons are needed for ACE during Arctic springtime
to understand better the measurements of species involved in stratospheric ozone
chemistry.
To this end, eleven Canadian Arctic Atmospheric Chemistry Experiment (ACE)
Validation Campaigns have been conducted during the spring period (February - April in
2004 - 2014) at the Polar Environment Atmospheric Research Laboratory (PEARL) in
Eureka, Nunavut (80°N, 86°W). This period coincides with the most chemically active
time of year in the Arctic, as well as a significant number of satellite overpasses. A
suite of as many as 12 ground-based instruments, as well as frequent balloon-borne
ozonesonde and radiosonde launches, have been used in each campaign. These
instruments include: a ground-based version of the ACE-FTS (PARIS - Portable
Atmospheric Research Interferometric Spectrometer), a terrestrial version of the
ACE-MAESTRO, a SunPhotoSpectrometer, two zenith-viewing UV-visible grating
spectrometers, a Bomem DA8 Fourier transform spectrometer, a Bruker 125HR
Fourier transform spectrometer, a Systeme d’Analyse par Observations Zenithales
(SAOZ) instrument, and several Brewer spectrophotometers. In the past several years,
these results have been used to validate the measurements by the ACE-FTS and
ACE-MAESTRO instruments on SCISAT as well as the OSIRIS instrument on Odin. This
presentation will focus on an overview of the measurements made by the ground-based,
balloon-borne and satellite-borne instruments during the recent ACE Arctic Validation
campaigns. Preliminary results from the 2014 campaign will also be discussed. |
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