Validation of ACE and OSIRIS ozone and NO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; measurements using ground-based instruments at 80° N

Adams, C.; Strong, Kimberly; Batchelor, R. L.; Bernath, Peter F.; Brohede, Samuel; Boone, C. D.; Degenstein, D. A.; Daffer, W. H.; Drummond, J. R.; Fogal, P. F.; Farahani, E.; Fayt, C.; Fraser, A.; Goutail, Florence; Hendrick, F.; Kolonjari, Felicia; Lindenmaier, R.; Manney, G. L.; McElroy, C. T.; McLinden, Chris A.; Mendonca, Joseph; Park, J.-H.; Pavlovic, B.; Pazmiño, Andréa; Roth, Chris; Savastiouk, Vladimir; Walker, Kaley A.; Weaver, Donald F.; Zhao, Xiaoyi

doi:10.5194/amt-5-927-2012

Cited by 33 publications

(53 citation statements)

References 63 publications

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“…Tests with a preliminary version of the next generation ACE-FTS retrievals (version 3.0) have shown that the slight positive stratospheric bias has been removed." Adams et al (2012) additionally present an intercomparison of ACE ozone profiles (both versions 2.2 and 3.0) against ground-based observations at Eureka, confirming that the new ACE-FTS v3.0 and the validated v2.2 partial ozone columns are nearly identical, with mean relative difference of 0.0 ± 0.2 % for v2.2. minus v3.0.…”

Section: Ace-fts Satellite Datamentioning

confidence: 66%

Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets

et al. 2015

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Abstract. This paper evaluates and discusses the quality of the stratospheric ozone analyses delivered in near real time by the MACC (Monitoring Atmospheric Composition and Climate) project during the 3-year period between September 2009 and September 2012. Ozone analyses produced by four different chemical data assimilation (CDA) systems are examined and compared: the Integrated Forecast System coupled to the Model for OZone And Related chemical Tracers (IFS-MOZART); the Belgian Assimilation System for Chemical ObsErvations (BASCOE); the Synoptic Analysis of Chemical Constituents by Advanced Data Assimilation (SACADA); and the Data Assimilation Model based on Transport Model version 3 (TM3DAM). The assimilated satellite ozone retrievals differed for each system; SACADA and TM3DAM assimilated only total ozone observations, BASCOE assimilated profiles for ozone and some related species, while IFS-MOZART assimilated both types of ozone observations. All analyses deliver total column values that agree well with ground-based observations (biases < 5 %) and have a realistic seasonal cycle, except for BASCOE analyses, which underestimate total ozone in the tropics all year long by 7 to 10 %, and SACADA analyses, which overestimate total ozone in polar night regions by up to 30 %. The validation of the vertical distribution is based on independent observations from ozonesondes and the ACE-FTS (Atmospheric Chemistry Experiment -Fourier Transform Spectrometer) satellite instrument. It cannot be performed with TM3DAM, which is designed only to deliver analyses of total ozone columns. Vertically alternating positive and negative biases are found in the IFS-MOZART analyses as well as an overestimation of 30 to 60 % in the polar lower stratosphere during polar ozone depletion events. SACADA underestimates lower stratospheric ozone by up to 50 % during these events above the South Pole and overestimates it by approximately the same amount in the tropics. The three-dimensional (3-D) analyses delivered by BASCOE are found to have the best quality among the three systems resolving the vertical dimension, with biases not exceeding 10 % all year long, at all stratospheric levels and in all latitude bands, except in the tropical lowermost stratosphere.The northern spring 2011 period is studied in more detail to evaluate the ability of the analyses to represent the exceptional ozone depletion event, which happened above the Arctic in March 2011. Offline sensitivity tests are performed during this month and indicate that the differences between the forward models or the assimilation algorithms are much less important than the characteristics of the assimilated data sets. They also show that IFS-MOZART is able to deliver realistic analyses of ozone both in the troposphere and in the stratoPublished by Copernicus Publications on behalf of the European Geosciences Union. sphere, but this requires the assimilation of observations from nadir-looking instruments as well as the assimilation of profiles, which are well resolved vertically an...

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Section: Ace-fts Satellite Datamentioning

confidence: 66%

Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets

et al. 2015

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“…The ozone air mass factors produce total columns (Hendrick et al, 2011), while the NO 2 air mass factors produce partial columns from 17 km to the top of the atmosphere (Appendix A of Adams et al, 2012a). On average, errors of 6.0 % for ozone, 19 % for NO 2 -vis and 19 % for NO 2 -UV were calculated for April/May GBS measurements.…”

Section: Doas Ozone and Nomentioning

confidence: 99%

“…The GBSs are part of the Network for the Detection of Atmospheric Composition Change (NDACC) and their Eureka ozone and NO 2 datasets are described in detail by Adams et al (2012a). Measurements from the two GBS instruments are nearly identical and therefore were combined into a single GBS dataset.…”

Section: Doas Ozone and Nomentioning

confidence: 99%

“…In early April 2011, DOAS NO 2 columns above PEARL reached approximately twice the column amount observed during the same season in previous years (Adams et al, 2012b). Therefore, we present an investigation of groundbased, satellite, and model NO 2 and ozone data above PEARL in April/May 2011.…”

Section: Introductionmentioning

confidence: 99%

“…Because of persistently low temperatures, continuous depletion via heterogeneous chemistry was observed until 20 April, leading to record ozone loss (Balis et al, 2011;Manney et al, 2011 (Adams et al, 2012b;Lindenmaier et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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The spring 2011 final stratospheric warming above Eureka: anomalous dynamics and chemistry

et al. 2013

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Abstract. In spring 2011, the Arctic polar vortex was stronger than in any other year on record. As the polar vortex started to break up in April, ozone and NO 2 columns were measured with UV-visible spectrometers above the Polar Environment Atmospheric Research Laboratory (PEARL) in Eureka, Canada (80.05 • N, 86.42 • W) using the differential optical absorption spectroscopy (DOAS) technique. These ground-based column measurements were complemented by Ozone Monitoring Instrument (OMI) and Optical Spectrograph and Infra-Red Imager System (OSIRIS) satellite measurements, Global Modeling Initiative (GMI) simulations, and meteorological quantities. On 8 April 2011, NO 2 columns above PEARL from the DOAS, OMI, and GMI datasets were approximately twice as large as in previous years. On this day, temperatures and ozone volume mixing ratios above Eureka were high, suggesting enhanced chemical production of NO 2 from NO. Additionally, GMI NO x (NO + NO 2 ) and N 2 O fields suggest that downward transport along the vortex edge and horizontal transport from lower latitudes also contributed to the enhanced NO 2 .

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A case study of a transported bromine explosion event in the Canadian high arctic

et al. 2016

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Ozone depletion events in the polar troposphere have been linked to extremely high concentrations of bromine, known as bromine explosion events (BEE). However, the optimum meteorological conditions for the occurrence of these events remain uncertain. On 4-5 April 2011, a combination of both blowing snow and a stable shallow boundary layer was observed during a BEE at Eureka, Canada (86.4°W, 80.1°N). Measurements made by a Multi-Axis Differential Optical Absorption Spectroscopy spectrometer were used to retrieve BrO profiles and partial columns. During this event, the near-surface BrO volume mixing ratio increased to~20 parts per trillion by volume, while ozone was depleted to~1 ppbv from the surface to 700 m. Back trajectories and Global Ozone Monitoring Experiment-2 satellite tropospheric BrO columns confirmed that this event originated from a bromine explosion over the Beaufort Sea. From 30 to 31 March, meteorological data showed high wind speeds (24 m/s) and elevated boundary layer heights (~800 m) over the Beaufort Sea. Long-distance transportation (~1800 km over 5 days) to Eureka indicated strong recycling of BrO within the bromine plume. This event was generally captured by a global chemistry-climate model when a sea-salt bromine source from blowing snow was included. A model sensitivity study indicated that the surface BrO at Eureka was controlled by both local photochemistry and boundary layer dynamics. Comparison of the model results with both ground-based and satellite measurements confirmed that the BEE observed at Eureka was triggered by transport of enhanced BrO from the Beaufort Sea followed by local production/recycling under stable atmospheric shallow boundary layer conditions.

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Validation of ACE and OSIRIS ozone and NO<sub>2</sub> measurements using ground-based instruments at 80° N

Cited by 33 publications

References 63 publications

Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets

Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets

The spring 2011 final stratospheric warming above Eureka: anomalous dynamics and chemistry

A case study of a transported bromine explosion event in the Canadian high arctic

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