Supplement for: N2O rate of change as a diagnostic of the Brewer-Dobson Circulation in the stratosphere
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N2O volume mixing ratios (vmrs) and their TEM budget terms computed by the models WACCM and BASCOE CTM. Each dataset corresponds to a model output: * mp03e5x is the BASCOE CTM driven by ERA5 (ERA5.1 between 2000 and 2006), * mp03ei is the BASCOE CTM driven by ERA-Interim, * mp03j5 is the BASCOE CTM driven by JRA-55, * mp03ma2 is the BASCOE CTM driven by MERRA-2, * waccm-refc1 is the multi-model mean of three realizations of the WACCM-REFC1 model, * and waccm-refd1 is one realization of the WACCM-REFD1 model. Each dataset contains: 1. the monthly and zonal means of the N2O vmrs. The files are named "N2O_${dataset}_lev_p.mzm.nc". 2. the N2O vmrs interpolated at the location of each FTIR station, vertically regridded to the vertical grid of the corresponding retrieval and smoothed with its AVK. Bruker is the FTIR instrument at Jungfraujoch station. The files are named "${dataset}_smoothed_{Izana,Bruker,Lauder,Wollongong}_prfl.csv". 3. the field "air_density_regridded", which is the air density interpolated at the location of each FTIR station and vertically regridded to the vertical grid of the corresponding retrieval. This field should be used to to integrate, from *smoothed*.csv , the N2O partial columns (12-40km altitude range) at the FTIR stations (as used for section 3 of the paper). The files are named "{Izana,Jungfraujoch,Lauder,Wollongong}_${dataset}_profiles.nc". 4. the N2O vmrs sampled in space and time as ACE-FTS and binned monthly to a low-resolution grid with 5° latitude spacing and 42 pressure levels (as used for section 4.1 of the paper). The files are named "N2O_${dataset}_at_ACEFTS4.1_FILTERED_VREG_5deg_min3.nc". 5. the monthly mean of the ADV term of the TEM budget (as used for section 5 of the paper). The files are named "advection_${dataset}_monmean_lev_p.nc". 6. the monthly mean of the MIX term of the TEM budget (as used for section 5 of the paper). The files are named "divM_${dataset}_monmean_lev_p.nc". See manuscript (Minganti et al., J. Geophys. Res., 2022) for more details.
本数据集包含由WACCM模式与BASCOE化学传输模式(Chemical Transport Model, CTM)计算得到的一氧化二氮(N₂O)体积混合比(volume mixing ratios, vmrs)及其变换欧拉平均(Transformed Eulerian Mean, TEM)收支项。每个数据集对应单一模式输出结果: * mp03e5x:采用ERA5驱动的BASCOE CTM(2000至2006年时段采用ERA5.1驱动) * mp03ei:采用ERA-Interim驱动的BASCOE CTM * mp03j5:采用JRA-55驱动的BASCOE CTM * mp03ma2:采用MERRA-2驱动的BASCOE CTM * waccm-refc1:WACCM-REFC1模式3个模拟集合成员的多模式平均结果 * waccm-refd1:WACCM-REFD1模式的单个模拟集合成员 每个数据集包含以下内容: 1. 一氧化二氮体积混合比的月平均与纬向平均数据。文件命名格式为`N2O_${dataset}_lev_p.mzm.nc`。 2. 在各傅里叶变换红外光谱(Fourier Transform Infrared, FTIR)站点位置插值得到的一氧化二氮体积混合比数据:已垂直重映射至对应反演的垂直网格,并通过其平均核(averaging kernel, AVK)进行平滑处理。荣弗劳约赫(Jungfraujoch)站点采用布鲁克(Bruker)FTIR仪器。文件命名格式为`${dataset}_smoothed_{Izana,Bruker,Lauder,Wollongong}_prfl.csv`。 3. 字段`air_density_regridded`:该字段为在各FTIR站点位置插值得到的空气密度数据,已垂直重映射至对应反演的垂直网格。该字段可用于对`*smoothed*.csv`文件中的数据进行积分,以计算FTIR站点处12~40 km高度范围内的一氧化二氮部分柱含量(即本文第3节所用计算方法)。文件命名格式为`{Izana,Jungfraujoch,Lauder,Wollongong}_${dataset}_profiles.nc`。 4. 按照ACE-FTS采样时空分布的一氧化二氮体积混合比数据,并按月分箱至低分辨率网格:该网格纬度间距为5°,包含42个气压层(即本文第4.1节所用网格)。文件命名格式为`N2O_${dataset}_at_ACEFTS4.1_FILTERED_VREG_5deg_min3.nc`。 5. TEM收支项中平流(Advection, ADV)项的月平均数据(即本文第5节所用数据)。文件命名格式为`advection_${dataset}_monmean_lev_p.nc`。 6. TEM收支项中混合(Mixing, MIX)项的月平均数据(即本文第5节所用数据)。文件命名格式为`divM_${dataset}_monmean_lev_p.nc`。 更多细节可参见论文(Minganti等人,《地球物理研究杂志》,2022年)。



