Datasets used for analysis and plotting in the study by Zhou et al. "Antarctic vortex dehydration in 2023 as a substantial removal pathway for Hunga Tonga-Hunga Ha'apai water vapour"

These data are model simulated water vapour (H2O) and ozone (O3) model mixing ratios between 2022 and 2023 that were used to create figures for the study by Zhou et al. "Antarctic vortex dehydration in 2023 as a substantial removal pathway for Hunga Tonga-Hunga Ha'apai water vapour". We use the TOMCAT/SLIMCAT 3-D off-line chemical transport model (Chipperfield, 2006) to represent the Hunga Tonga-Hunga Ha'apai (HTHH) H2O plume and quantify its longevity and ozone impacts. The model was run at a horizontal resolution of 2.8 degrees and 32 levels from the surface to about 60 km forced with ECMWF ERA5 meteorology. A control simulation (file name with "MPC741") without treatment of HTHH was integrated from 1980 to October 2023. Output from run control for January 1st, 2022 was used to intialise a HTHH H2O perturbed run (run HT, file name with "MPC744") until October 2023 with the injection of 150 Tg of H2O into the low-mid stratosphere at southern subtropical latitudes. To test the possible future evolution of the HTHH H2O three further model runs were performed. These were integrated from January 1st, 2023 until 2030 using repeating ERA-5 meteorology for 2022. Run Con_2022 (file name with "MPC741__2022pd") was an extension of run control; run HT2022 was an extension of run HT (file name with "MPC744_2022pd"), and run HT2022ns (file name with "MPC744_2022pdns") was the same as run HT_2022 but had sedimentation of PSC particles turned off. Please see our paper for more information about the simulations.本数据集为2022至2023年间的模式模拟水汽（H₂O）与臭氧（O₃）模式混合比数据，用于制作Zhou等人发表的题为《2023年南极涡旋脱水作为洪加汤加-洪加哈派岛水汽的主要移除途径》的研究论文配图。 本研究采用TOMCAT/SLIMCAT三维离线化学传输模式（3-D off-line chemical transport model，Chipperfield, 2006），模拟洪加汤加-洪加哈派岛（Hunga Tonga-Hunga Ha'apai，以下简称HTHH）的水汽羽流，并量化其存续时长与臭氧影响。该模式水平分辨率为2.8度，垂直共32层，覆盖地表至约60公里高度，驱动场采用欧洲中期天气预报中心（European Centre for Medium-Range Weather Forecasts，简称ECMWF）的ERA5气象再分析数据。 一组对照模拟（文件名含“MPC741”）未纳入HTHH影响，积分时段为1980年至2023年10月。 以2022年1月1日的对照模拟输出作为初始场，开展HTHH水汽扰动模拟（HT运行组，文件名含“MPC744”），直至2023年10月；该扰动模拟向南半球副热带纬度的中低层平流层注入150Tg水汽。 为探究HTHH水汽的未来演化趋势，本研究额外开展三组模拟，均采用2022年的重复ERA5气象场作为驱动，积分时段为2023年1月1日至2030年。其中：Con_2022运行组（文件名含“MPC741__2022pd”）为对照模拟的延续；HT2022运行组（文件名含“MPC744_2022pd”）为HT运行组的延续；HT2022ns运行组（文件名含“MPC744_2022pdns”）与HT2022运行组设置一致，但关闭了极地平流层云（Polar Stratospheric Clouds，简称PSC）粒子的沉降过程。更多模拟细节请参见本研究论文。