Updated validation of ACE and OSIRIS ozone and NO 2 measurements in the Arctic using ground-based instruments at Eureka, Canada
Spectrograph and Infra-Red Imager System (OSIRIS); Atmospheric Chemistry Experiment (ACE) satellite instruments; zenith-sky differential optical absorption spectroscopy (DOAS) instruments; Fourier transform infrared (FTIR) spectrometers; Brewer spectrophotometer International audience This paper pre...
Published in: | Journal of Quantitative Spectroscopy and Radiative Transfer |
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Main Authors: | , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2019
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Subjects: | |
Online Access: | https://insu.hal.science/insu-02182891 https://insu.hal.science/insu-02182891/document https://insu.hal.science/insu-02182891/file/1-s2.0-S002240731830935X-main.pdf https://doi.org/10.1016/j.jqsrt.2019.07.014 |
Summary: | Spectrograph and Infra-Red Imager System (OSIRIS); Atmospheric Chemistry Experiment (ACE) satellite instruments; zenith-sky differential optical absorption spectroscopy (DOAS) instruments; Fourier transform infrared (FTIR) spectrometers; Brewer spectrophotometer International audience This paper presents long-term intercomparisons (2003-2017) between ozone and NO 2 measured by the Optical Spectrograph and Infra-Red Imager System (OSIRIS) and the Atmospheric Chemistry Experiment (ACE) satellite instruments, and by ground-based instruments at the Polar Environment Atmospheric Research Laboratory (PEARL), near Eureka, Nunavut, Canada (80∘N, 86∘W). The ground-based instruments include four zenith-sky differential optical absorption spectroscopy (DOAS) instruments, two Fourier transform infrared (FTIR) spectrometers, and a Brewer spectrophotometer. Comparisons of 14-52 km ozone partial columns show good agreement between OSIRIS v5.10 and ACE-FTS v3.5/3.6 data (1.2%), while ACE-MAESTRO v3.13 ozone is smaller than the other two datasets by 6.7% and 5.9%, respectively. Satellite profiles were extended to the surface using ozonesonde data, and the resulting columns agree with the ground-based datasets with mean relative differences of 0.1-12.0%. For NO2, 12-40 km partial columns from ACE-FTS v3.5/3.6 and 12-32 km partial columns from OSIRIS v6.0 (scaled to 40 km) agree with ground-based partial columns with mean relative differences of 0.7-33.2%. Dynamical coincidence criteria improved the ACE to ground-based FTIR ozone comparisons, while little to no improvements were seen for other instruments, and for NO 2 . A ± 1∘ latitude criterion modestly improved the spring and fall NO 2 comparisons. The results of this study are consistent with previous validation exercises. In addition, there are no significant drifts between the satellite datasets, or between the satellites and the ground-based measurements, indicating that the OSIRIS and ACE instruments continue to perform well |
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