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Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data
The variability and trend of ozone (O(3)) in the Upper troposphere and Lower Stratosphere (UTLS) over the Asian region needs to be accurately quantified. Ozone in the UTLS radiatively heats this region and cools the upper parts of the stratosphere. This results in an impact on relative humidity, sta...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10154380/ https://www.ncbi.nlm.nih.gov/pubmed/37130920 http://dx.doi.org/10.1038/s41598-023-34330-5 |
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author | Fadnavis, Suvarna Sagalgile, Archana Sonbawne, Sunil Vogel, Bärbel Peter, Thomas Wienhold, Frank G. Dirksen, Ruud Oelsner, Peter Naja, Manish Müller, Rolf |
author_facet | Fadnavis, Suvarna Sagalgile, Archana Sonbawne, Sunil Vogel, Bärbel Peter, Thomas Wienhold, Frank G. Dirksen, Ruud Oelsner, Peter Naja, Manish Müller, Rolf |
author_sort | Fadnavis, Suvarna |
collection | PubMed |
description | The variability and trend of ozone (O(3)) in the Upper troposphere and Lower Stratosphere (UTLS) over the Asian region needs to be accurately quantified. Ozone in the UTLS radiatively heats this region and cools the upper parts of the stratosphere. This results in an impact on relative humidity, static stability in the UTLS region and tropical tropopause temperature. A major challenge for understanding ozone chemistry in the UTLS is sparse observations and thus the representation of precursor gases in model emission inventories. Here, we evaluate ozonesonde measurements during August 2016 at Nainital, in the Himalayas, against ozone from multiple reanalyses and the ECHAM6-HAMMOZ model. We find that compared to measurements both reanalyses and ECHAM6-HAMMOZ control simulation overestimate ozone mixing ratios in the troposphere (20 ppb) and in the UTLS (55 ppb). We performed sensitivity simulations using the ECHAM6-HAMMOZ model for a 50% reduction in the emission of (1) NOx and (2) VOCs. The model simulations with NO(X) reduction agree better with the ozonesonde observations in the lower troposphere and in the UTLS. Thus, neither reanalyses nor ECHAM6-HAMMOZ results can reproduce observed O(3) over the South Asian region. For a better representation of O(3) in the ECHAM6-HAMMOZ model, NO(X) emission should be reduced by 50% in the emission inventory. A larger number of observations of ozone and precursor gases over the South Asian region would improve the assessment of ozone chemistry in models. |
format | Online Article Text |
id | pubmed-10154380 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-101543802023-05-04 Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data Fadnavis, Suvarna Sagalgile, Archana Sonbawne, Sunil Vogel, Bärbel Peter, Thomas Wienhold, Frank G. Dirksen, Ruud Oelsner, Peter Naja, Manish Müller, Rolf Sci Rep Article The variability and trend of ozone (O(3)) in the Upper troposphere and Lower Stratosphere (UTLS) over the Asian region needs to be accurately quantified. Ozone in the UTLS radiatively heats this region and cools the upper parts of the stratosphere. This results in an impact on relative humidity, static stability in the UTLS region and tropical tropopause temperature. A major challenge for understanding ozone chemistry in the UTLS is sparse observations and thus the representation of precursor gases in model emission inventories. Here, we evaluate ozonesonde measurements during August 2016 at Nainital, in the Himalayas, against ozone from multiple reanalyses and the ECHAM6-HAMMOZ model. We find that compared to measurements both reanalyses and ECHAM6-HAMMOZ control simulation overestimate ozone mixing ratios in the troposphere (20 ppb) and in the UTLS (55 ppb). We performed sensitivity simulations using the ECHAM6-HAMMOZ model for a 50% reduction in the emission of (1) NOx and (2) VOCs. The model simulations with NO(X) reduction agree better with the ozonesonde observations in the lower troposphere and in the UTLS. Thus, neither reanalyses nor ECHAM6-HAMMOZ results can reproduce observed O(3) over the South Asian region. For a better representation of O(3) in the ECHAM6-HAMMOZ model, NO(X) emission should be reduced by 50% in the emission inventory. A larger number of observations of ozone and precursor gases over the South Asian region would improve the assessment of ozone chemistry in models. Nature Publishing Group UK 2023-05-02 /pmc/articles/PMC10154380/ /pubmed/37130920 http://dx.doi.org/10.1038/s41598-023-34330-5 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Fadnavis, Suvarna Sagalgile, Archana Sonbawne, Sunil Vogel, Bärbel Peter, Thomas Wienhold, Frank G. Dirksen, Ruud Oelsner, Peter Naja, Manish Müller, Rolf Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title | Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title_full | Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title_fullStr | Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title_full_unstemmed | Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title_short | Comparison of ozonesonde measurements in the upper troposphere and lower Stratosphere in Northern India with reanalysis and chemistry-climate-model data |
title_sort | comparison of ozonesonde measurements in the upper troposphere and lower stratosphere in northern india with reanalysis and chemistry-climate-model data |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10154380/ https://www.ncbi.nlm.nih.gov/pubmed/37130920 http://dx.doi.org/10.1038/s41598-023-34330-5 |
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