Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets
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 d...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-15-2269-2015 https://doaj.org/article/229a07256a9844239ef2813bd1b7aa7d |
id |
ftdoajarticles:oai:doaj.org/article:229a07256a9844239ef2813bd1b7aa7d |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:229a07256a9844239ef2813bd1b7aa7d 2023-05-15T18:02:18+02:00 Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets K. Lefever R. van der A F. Baier Y. Christophe Q. Errera H. Eskes J. Flemming A. Inness L. Jones J.-C. Lambert B. Langerock M. G. Schultz O. Stein A. Wagner S. Chabrillat 2015-03-01T00:00:00Z https://doi.org/10.5194/acp-15-2269-2015 https://doaj.org/article/229a07256a9844239ef2813bd1b7aa7d EN eng Copernicus Publications http://www.atmos-chem-phys.net/15/2269/2015/acp-15-2269-2015.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-15-2269-2015 https://doaj.org/article/229a07256a9844239ef2813bd1b7aa7d Atmospheric Chemistry and Physics, Vol 15, Iss 5, Pp 2269-2293 (2015) Physics QC1-999 Chemistry QD1-999 article 2015 ftdoajarticles https://doi.org/10.5194/acp-15-2269-2015 2022-12-31T06:16:50Z 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 ... Article in Journal/Newspaper polar night South pole Directory of Open Access Journals: DOAJ Articles South Pole Atmospheric Chemistry and Physics 15 5 2269 2293 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 K. Lefever R. van der A F. Baier Y. Christophe Q. Errera H. Eskes J. Flemming A. Inness L. Jones J.-C. Lambert B. Langerock M. G. Schultz O. Stein A. Wagner S. Chabrillat Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
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 ... |
format |
Article in Journal/Newspaper |
author |
K. Lefever R. van der A F. Baier Y. Christophe Q. Errera H. Eskes J. Flemming A. Inness L. Jones J.-C. Lambert B. Langerock M. G. Schultz O. Stein A. Wagner S. Chabrillat |
author_facet |
K. Lefever R. van der A F. Baier Y. Christophe Q. Errera H. Eskes J. Flemming A. Inness L. Jones J.-C. Lambert B. Langerock M. G. Schultz O. Stein A. Wagner S. Chabrillat |
author_sort |
K. Lefever |
title |
Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
title_short |
Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
title_full |
Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
title_fullStr |
Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
title_full_unstemmed |
Copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
title_sort |
copernicus stratospheric ozone service, 2009–2012: validation, system intercomparison and roles of input data sets |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/acp-15-2269-2015 https://doaj.org/article/229a07256a9844239ef2813bd1b7aa7d |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
polar night South pole |
genre_facet |
polar night South pole |
op_source |
Atmospheric Chemistry and Physics, Vol 15, Iss 5, Pp 2269-2293 (2015) |
op_relation |
http://www.atmos-chem-phys.net/15/2269/2015/acp-15-2269-2015.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-15-2269-2015 https://doaj.org/article/229a07256a9844239ef2813bd1b7aa7d |
op_doi |
https://doi.org/10.5194/acp-15-2269-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
5 |
container_start_page |
2269 |
op_container_end_page |
2293 |
_version_ |
1766172108406128640 |