Now showing items 1-8 of 8

    • Estimates of ozone return dates from Chemistry-Climate Model Initiative simulations 

      Dhomse SS; Kinnison D; Chipperfield MP; Salawitch RJ; Cionni I; Hegglin MI; Abraham NL; Akiyoshi H; Archibald AT; Bednarz EM; Bekki S; Braesicke P; Butchart N; Dameris M; Deushi M; Frith S; Hardiman SC; Hassler B; Horowitz LW; Hu R-M; Jöckel P; Josse B; Kirner O; Kremser S; Langematz U; Lewis J; Marchand M; Lin M; Mancini E; Marécal V; Michou M; Morgenstern O; Oman L; Pitari G; Plummer DA; Pyle JA; Revell LE; Rozanov E; Schofield R; Stenke A; Stone K; Sudo K; Tilmes S; Visioni D; Yamashita Y; Zeng G; O'Connor, FM (2018)
      We analyse simulations performed for the Chemistry-Climate Model Initiative (CCMI) to estimate the return dates of the stratospheric ozone layer from depletion caused by anthropogenic stratospheric chlorine and bromine. We ...
    • Large-scale tropospheric transport in the Chemistry–Climate Model Initiative (CCMI) simulations 

      Orbe C; Yang H; Waugh DW; Zeng G; Morgenstern O; Kinnison DE; Lamarque J-F; Tilmes S; Plummer DA; Scinocca JF; Josse B; Marecal V; Jockel P; Oman LD; Strahan SE; Deushi M; Tanaka TY; Yoshida K; Akiyoshi H; Yamashita Y; Stenke A; Revell LE; Sukhodolov T; Rozanov E; Pitari G; Visioni D; Stone KA; Schofield R; Banerjee A (2018)
      Understanding and modeling the large-scale transport of trace gases and aerosols is important for interpreting past (and projecting future) changes in atmospheric composition. Here we show that there are large differences in ...
    • No robust evidence of future changes in major stratospheric sudden warmings: a multi-model assessment from CCMI 

      Ayarzaguena B; Polvani LM; Langematz U; Akiyoshi H; Bekki S; Butchart N; Dameris M; Deushi M; Hardiman SC; Jockel P; Klekociuk A; Marchand M; Michou M; Morgenstern O; O'Connor F; Oman LD; Plummer DA; Revell LE; Rozanov E; Saint-Martin D; Scinocca J; Stenke A; Stone K; Yamashita Y; Yoshida K; Zeng G (2018)
      Major mid-winter stratospheric sudden warmings (SSWs) are the largest instance of wintertime variability in the Arctic stratosphere. Because SSWs are able to cause significant surface weather anomalies on intra-season ...
    • Ozone sensitivity to varying greenhouse gases and ozone-depleting substances in CCMI-1 simulations 

      Morgenstern O; Stone K; Schofield R; Akiyoshi H; Yamashita Y; Kinnison D; Garcia R; Sudo K; Plummer D; Scinocca J; Oman L; Manyin M; Zeng G; Rozanov E; Stenke A; Revell LE; Pitari G; Mancini E; Di Genova G; Visioni D; Dhomse S; Chipperfield M (2018)
      Ozone fields simulated for the first phase of the Chemistry-Climate Model Initiative (CCMI-1) will be used as forcing data in the 6th Coupled Model Intercomparison Project. Here we assess, using reference and sensitivity ...
    • The representation of solar cycle signals in stratospheric ozone –Part 2: Analysis of global models 

      Maycock AC; Matthes K; Tegtmeier S; Schmidt H; Thieblemont R; Hood L; Akiyoshi H; Bekki S; Deushi M; Jockel P; Kirner O; Kunze M; Marchand M; Marsh DR; Michou M; Plummer D; Revell LE; Rozanov E; Stenke A; Yamashita Y; Yoshida K (2018)
      The impact of changes in incoming solar irradiance on stratospheric ozone abundances should be included in climate simulations to aid in capturing the atmospheric response to solar cycle variability. This study presents ...
    • Stratospheric Injection of Brominated Very Short‐Lived Substances: Aircraft Observations in the Western Pacific and Representation in Global Models 

      Wales PA; Salawitch RJ; Nicely JM; Anderson DC; Canty T; Baidar S; Dix B; Koenig TK; Volkamer R; Chen D; Hueg LG; Tanner DJ; Cuevas CA; Fernandez RP; Kinnison D; Lamarque J-F; Saiz-Lopez A; Atlas EL; Hall SR; Navarro MA; Pan L; Schauffler SM; Stell M; Tilmes S; Ullman K; Weinheimer AJ; Akiyoshi H; Chipperfield M; Deushi M; Dhomse S; Feng W; Graf P; Hossaini R; Jockel P; Mancini E; Michou M; Morgenstern O; Oman L; Pitari G; Plummer D; Revell LE; Rozanov E; Saint-Martin D; Schofield R; Stenke A; Stone K; Visioni D; Yamashita Y; Zeng G (2018)
      We quantify the stratospheric injection of brominated very short-lived substances (VSLS) based on aircraft observations acquired in winter 2014 above the Tropical Western Pacific during the CONvective TRansport of Active ...
    • Tropospheric jet response to Antarctic ozone depletion: An update with Chemistry-Climate Model Initiative (CCMI) models 

      Son S-W; Han B-R; Garfinkel CI; Kim S-Y; Park R; Abraham NL; Akiyoshi H; Archibald AT; Butchart N; Chipperfield M; Dameris M; Deushi M; Dhomse S; Hardiman SC; Jockel P; Kinnison D; Michou M; Morgenstern O; O'Connor FM; Oman L; Plummer D; Pozzer A; Revell LE; Rozanov E; Stenke A; Stone K; Tilmes S; Yamashita Y; Zeng G (2018)
      The Southern Hemisphere (SH) zonal-mean circulation change in response to Antarctic ozone depletion is re-visited by examining a set of the latest model simulations archived for the Chemistry-Climate Model Initiative ...
    • Tropospheric ozone in CCMI models and Gaussian process emulation to understand biases in the SOCOLv3 chemistry–climate model 

      Revell LE; Stenke A; Tummon F; Feinberg A; Rozanov E; Peter T; Abraham NL; Akiyoshi H; Archibald AT; Butchart N; Deushi M; Jöckel P; Kinnison D; Michou M; Morgenstern O; O'Connor FM; Oman LD; Pitari G; Plummer DA; Schofield R; Stone K; Tilmes S; Visioni D; Yamashita Y; Zeng G (2018)
      Previous multi-model intercomparisons have shown that chemistry–climate models exhibit significant biases in tropospheric ozone compared with observations. We investigate annual-mean tropospheric column ozone in 15 ...