Partial and total ozone column measurements at Lauder (45S, 170E) from FTIR, Dobson, UV2, lidar, ozonesonde, microwave radiometer

This data set contains netCDF files of the total and partial columns of FTIR, Dobson, UV2, lidar, ozonesonde, and microwave radiometer observations. They represent measurement coincidences of each measurement with FTIR taken within a specific time window (specified in the description of each file). The technique for the creation of the measurement pairs of the total and partial columns is explained in the following publication: *Intercomparison of long-term ground-based measurements of tropospheric and stratospheric ozone at Lauder, New Zealand (45S)*<br> *Robin Björklund, Corinne Vigouroux, Peter Effertz, Omaira Garcia, Alex Geddes, James Hannigan, Koji Miyagawa, Michael Kotkamp, Bavo Langerock, Gerald Nedoluha, Ivan Ortega, Irina Petropavlovskikh, Deniz Poyraz, Richard Querel, John Robinson, Hisako Shiona, Dan Smale, Penny Smale, Roeland Van Malderen, and Martine De Mazière.* *https://doi.org/10.5194/egusphere-2023-2668* The files contain the corresponding measurement times as well as the column density values for both FTIR and the measurement that is considered simultaneously. These are either total column values (file name contains 'TC') or partial column values (file name contains 'PC'). For the Umkehr, microwave radiometer, lidar, and ozonesonde measurements the profiles have been regridded, smoothed, and substituted with another prior (when relevant), where all these steps are included in the variables of the partial columns. In the bias and drift analysis Björklund et al. 2024 use: ### FTIR vs lidar *FTIR_measurement_pc_X_on_FTIR* vs *LIDAR_measurement_smooth_with_FTIR_avk_pc_X_on_FTIR* ### FTIR vs Dobson *FTIR_column* vs *DOBSON_column* ### FTIR vs UV2 *FTIR_column* vs *UV2_column* ### FTIR vs MWR *FTIR_measurement_pc_X_on_FTIR* vs *GB_with_FTIR_prior_smooth_with_FTIR_avk_pc_X_on_FTIR* ### FTIR vs ozonesonde *FTIR_measurement_pc_X_on_FTIR* vs *O3SONDE_measurement_smooth_with_FTIR_avk_pc_X_on_FTIR* ### FTIR vs Umkehr *FTIR_measurement_smooth_with_UMKEHR_avk_pc_X_on_UMKEHR* vs *UMKEHR_with_FTIR_prior_pc_X_on_UMKEHR* In the variable names the *X* represents the number of the different partial columns as specified in the description of the files separately. ### Source locations for individual datasets Information about each data set can be found at their individual source location: Current public data for the FTIR, lidar, MWR, and Umkehr can be found at [NDACC](https://ndacc.larc.nasa.gov/data). The FTIR data will be updated here with the new strategy explained in the Bjorklund et al. 2024. NOAA Dobson Total Column Ozone measurements can also be found on the [NOAA GML FTP website](https://gml.noaa.gov/aftp/data/ozwv/Dobson/), at [WOUDC](https://woudc.org/). Likewise the Monthly Mean optimized/homogenized Umkher profiles can be found on the [NOAA GML FTP](https://gml.noaa.gov/aftp/ozwv/Dobson/AC4/Umkehr/Optimized). Ozonesondes: The homogenized Lauder ozonesonde time series are available at the [HEGIFTOM ftp-server](https://hegiftom.meteo.be/datasets/ozonesondes).本数据集包含傅里叶变换红外光谱（FTIR）、多布森光谱仪（Dobson）、UV2、激光雷达（lidar）、臭氧探空仪（ozonesonde）以及微波辐射计（microwave radiometer）观测的总柱与部分柱含量的netCDF文件。这些文件对应了各观测与FTIR在特定时间窗口（详见各文件说明）内的同步测量匹配结果。用于生成总柱与部分柱含量测量配对数据的方法，已在以下期刊文献中详述： *《新西兰劳德（45°S）长期对流层与平流层臭氧地面测量的比对研究》* *Robin Björklund, Corinne Vigouroux, Peter Effertz, Omaira Garcia, Alex Geddes, James Hannigan, Koji Miyagawa, Michael Kotkamp, Bavo Langerock, Gerald Nedoluha, Ivan Ortega, Irina Petropavlovskikh, Deniz Poyraz, Richard Querel, John Robinson, Hisako Shiona, Dan Smale, Penny Smale, Roeland Van Malderen, 及 Martine De Mazière.* *https://doi.org/10.5194/egusphere-2023-2668* 文件中包含对应测量时刻，以及FTIR与同步观测的柱密度数值。这些数据分为总柱含量（文件名含'TC'）与部分柱含量（文件名含'PC'）两类。针对Umkehr、微波辐射计、激光雷达及臭氧探空仪的观测，其廓线已完成重网格化、平滑处理，并在必要时替换了先验信息，上述所有处理步骤均已纳入部分柱含量的变量参数中。 在偏差与漂移分析中，Björklund等人2024年的研究采用了以下比对组合： #### FTIR与激光雷达比对 *FTIR_measurement_pc_X_on_FTIR* 与 *LIDAR_measurement_smooth_with_FTIR_avk_pc_X_on_FTIR* #### FTIR与多布森光谱仪比对 *FTIR_column* 与 *DOBSON_column* #### FTIR与UV2比对 *FTIR_column* 与 *UV2_column* #### FTIR与微波辐射计比对 *FTIR_measurement_pc_X_on_FTIR* 与 *GB_with_FTIR_prior_smooth_with_FTIR_avk_pc_X_on_FTIR* #### FTIR与臭氧探空仪比对 *FTIR_measurement_pc_X_on_FTIR* 与 *O3SONDE_measurement_smooth_with_FTIR_avk_pc_X_on_FTIR* #### FTIR与Umkehr比对 *FTIR_measurement_smooth_with_UMKEHR_avk_pc_X_on_UMKEHR* 与 *UMKEHR_with_FTIR_prior_pc_X_on_UMKEHR* 变量名中的*X*代表各文件说明中指定的不同部分柱含量序号。 ### 各数据集的源地址 各数据集的详细信息可查阅其对应源地址： 目前FTIR、激光雷达、微波辐射计及Umkehr的公开数据可在[大气成分变化检测网络（NDACC）](https://ndacc.larc.nasa.gov/data)获取。本数据集的FTIR数据将按照Bjorklund等人2024年提出的新策略进行更新。美国国家海洋和大气管理局（NOAA）的多布森总柱臭氧测量数据可在[NOAA GML FTP网站](https://gml.noaa.gov/aftp/data/ozwv/Dobson/)及[世界臭氧与紫外辐射数据中心（WOUDC）](https://woudc.org/)获取。同理，经月均优化/均一化的Umkehr廓线数据可在[NOAA GML FTP](https://gml.noaa.gov/aftp/ozwv/Dobson/AC4/Umkehr/Optimized)获取。 臭氧探空仪： 经均一化处理的劳德臭氧探空仪时间序列数据可在[HEGIFTOM FTP服务器](https://hegiftom.meteo.be/datasets/ozonesondes)获取。