First reprocessing of Southern Hemisphere ADditional OZonesondes (SHADOZ) profile records (1998–2015): 1. Methodology and evaluation
First reprocessing of Southern Hemisphere ADditional OZonesondes (SHADOZ) profile records (1998–2015): 1. Methodology and evaluation
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DOI：
10.1002/2016jd026403
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发表时间：
2017-06
期刊：
影响因子：
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通讯作者：
J. Witte;A. Thompson;H. Smit;M. Fujiwara;F. Posny;G. Coetzee;E. Northam;B. Johnson;C. Sterling;M. Mohamad;S. Ogino;A. Jordan;F. R. Silva
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文献类型：
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作者：
J. Witte;A. Thompson;H. Smit;M. Fujiwara;F. Posny;G. Coetzee;E. Northam;B. Johnson;C. Sterling;M. Mohamad;S. Ogino;A. Jordan;F. R. Silva
电化学浓度池臭氧探空仪测量是高分辨率臭氧（O3）垂直剖面的重要来源，具有长期数据记录，可用于推导O3趋势、模型开发、卫星验证和空气质量研究。臭氧探空站采用一系列操作和数据处理程序、元数据报告和仪器更改，导致单个站数据记录不均匀。一个重要的里程碑是对七个南半球附加臭氧探空仪（shadowz）站臭氧探空仪记录的首次再处理，以解释操作/处理程序中的错误和偏差。阿森松岛、河内、艾琳、吉隆坡、拉雷姆联、纳塔尔和瓦图科塞克站的记录都显示，再处理后O3总体上有所增加。Watukosek在总柱O3中增加最大，为9.0±2.1 Dobson Units (DU)；艾琳和河内的DU增加了5.5±2.5，而其他站点的DU增加在统计上不显著。在对流层（高达8%）和平流层（高达6%）进行再处理后，O3的增强可以忽略不计到适度，但在La r<s:1> union，背景电流的应用降低了对流层O3（- 2.1±1.3 DU）。由于在阿森松、纳塔尔和拉拉西姆的臭氧/溶液类型变化引起的不均匀性通过传递函数的应用得到解决。与EP - TOMS、Aura的臭氧监测仪和微波边缘测深仪（MLS）卫星O3立桥的比较表明，再处理后的一致性总体上有所提高。大多数重新处理的数据集显示，臭氧最大值区域（50-10 hPa）的MLS偏差显著减小。无线电探空仪/臭氧探空仪系统和非标准溶液类型的变化可以解释在若干地点观测到的与卫星相比的剩余差异。
Electrochemical concentration cell ozonesonde measurements are an important source of highly resolved vertical profiles of ozone (O3) with long‐term data records for deriving O3 trends, model development, satellite validation, and air quality studies. Ozonesonde stations employ a range of operational and data processing procedures, metadata reporting, and instrument changes that have resulted in inhomogeneities within individual station data records. A major milestone is the first reprocessing of seven Southern Hemisphere ADditional OZonesondes (SHADOZ) station ozonesonde records to account for errors and biases in operating/processing procedures. Ascension Island, Hanoi, Irene, Kuala Lumpur, La Réunion, Natal, and Watukosek station records all show an overall increase in O3 after reprocessing. Watukosek shows the largest increase of 9.0 ± 2.1 Dobson Units (DU) in total column O3; Irene and Hanoi show a 5.5 ± 2.5 DU increase, while remaining sites show statistically insignificant enhancements. Negligible to modest O3 enhancements are observed after reprocessing in the troposphere (up to 8%) and stratosphere (up to 6%), except at La Réunion for which the application of background currents reduces tropospheric O3 (−2.1 ± 1.3 DU). Inhomogeneities due to ozonesonde/solution‐type changes at Ascension, Natal, and La Réunion are resolved with the application of transfer functions. Comparisons with EP‐TOMS, Aura's Ozone Monitoring Instrument and Microwave Limb Sounder (MLS) satellite O3 overpasses show an overall improvement in agreement after reprocessing. Most reprocessed data sets show a significant reduction in biases with MLS at the ozone maximum region (50–10 hPa). Changes in radiosonde/ozonesonde system and nonstandard solution types can account for remaining discrepancies observed at several sites when compared to satellites.