| Title: |
Ultraviolet radiation modelling using output from the chemistry climate model initiative |
| Authors: |
Lamy, Kevin; Portafaix, Thierry; Josse, Béatrice; Brogniez, Colette; Godin-Beekmann, Sophie; Bencherif, Hassan; Revell, Laura; Akiyoshi, Hideharu; Bekki, Slimane; Hegglin, Michaela I.; Jockel, Patrick; Kirner, Oliver; Marécal, Virginie; Morgenstern, Olaf; Stenke, Andrea; Zeng, Guang; Abraham, N. Luke; Archibald, Alexander T.; Butchart, Neil; Chipperfield, Martyn P.; Di Genova, Glauco; Deushi, Makoto; Dhomse, Sandip S.; Hu, Rong-Ming; Kinnison, Douglas; Michou, Martine; O'Connor, Fiona M.; Oman, Luke; Pitari, Giovanni; Plummer, David A.; Pyle, John A.; Rozanov, Eugene; Saint‐martin, D.; Sudo, Kengo; Tanaka, Taichu Y.; Visioni, Daniele; Yoshida, Kohei |
| Contributors: |
Laboratoire de l'Atmosphère et des Cyclones (LACy); Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Météo-France; Centre national de recherches météorologiques (CNRM); Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Météo-France; Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA); Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS); STRATO - LATMOS; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); University of KwaZulu-Natal Durban, Afrique du Sud (UKZN); Institute for Atmospheric and Climate Science Zürich (IAC); Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich); School of Physical and Chemical Sciences Christchurch; University of Canterbury Christchurch; National Institute for Environmental Studies (NIES) |
| Source: |
https://lilloa.hal.science/hal-04478230 ; 2024. |
| Publisher Information: |
CCSD |
| Publication Year: |
2024 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
[PHYS]Physics [physics] |
| Description: |
International audience ; We have derived values of the Ultraviolet Index (UVI) at solar noon using the Tropospheric Ultraviolet Model (TUV) driven by ozone, temperature and aerosol fields from climate simulations of the first phase of the Chemistry-Climate Model Initiative (CCMI-1). Since clouds remain one of the largest uncertainties in climate projections, we simulated only the clear-sky UVI. We compared the modelled UVI climatologies against present-day climatological values of UVI derived from both satellite data (the OMI-Aura OMUVBd product) and ground-based measurements (from the NDACC network). Depending on the region, relative differences between the UVI obtained from CCMI/TUV calculations and the ground-based measurements ranged between -5.9% and 10.6%. We then calculated the UVI evolution throughout the 21st century for the four Representative Concentration Pathways (RCPs 2.6, 4.5, 6.0 and 8.5). Compared to 1960s values, we found an average increase in the UVI in 2100 (of 2-4%) in the tropical belt (30°N-30°S). For the mid-latitudes, we observed a 1.8 to 3.4 % increase in the Southern Hemisphere for RCP 2.6, 4.5 and 6.0, and found a 2.3% decrease in RCP 8.5. Higher increases in UVI are projected in the Northern Hemisphere except for RCP 8.5. At high latitudes, ozone recovery is well identified and induces a complete return of mean UVI levels to 1960 values for RCP 8.5 in the Southern Hemisphere. In the Northern Hemisphere, UVI levels in 2100 are higher by 0.5 to 5.5% for RCP 2.6, 4.5 and 6.0 and they are lower by 7.9% for RCP 8.5. We analysed the impacts of greenhouse gases (GHGs) and ozone-depleting substances (ODSs) on UVI from 1960 by comparing CCMI sensitivity simulations (1960-2100) with fixed GHGs or ODSs at their respective 1960 levels. As expected with ODS fixed at their 1960 levels, there is no large decrease in ozone levels and consequently no sudden increase in UVI levels. With fixed GHG, we observed a delayed return of ozone to 1960 values, with a corresponding pattern of change observed on ... |
| Document Type: |
report |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/31632450; PUBMED: 31632450 |
| DOI: |
10.5194/acp-2018-525 |
| Availability: |
https://lilloa.hal.science/hal-04478230; https://lilloa.hal.science/hal-04478230v1/document; https://lilloa.hal.science/hal-04478230v1/file/acp-2018-525.pdf; https://doi.org/10.5194/acp-2018-525 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.F6132E3F |
| Database: |
BASE |