| Argo溶解氧数据的气候态校正方法改进 |
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| 引用本文： | 刘烨,邢小罡.Argo溶解氧数据的气候态校正方法改进[J].海洋与湖沼,2019,50(5):994-1001. |
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| 作者姓名： | 刘烨 邢小罡 |
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| 作者单位： | 自然资源部第二海洋研究所 杭州 310012;自然资源部第二海洋研究所 杭州 310012 |
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| 基金项目： | 青岛海洋科学与技术试点国家实验室开放基金项目，QNLM2016ORP0103号；中央级公益性科研院所基本科研业务费专项资金资助项目，QNYC1702号，14283号。 |
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| 摘 要： | Argo浮标观测的溶解氧数据的质量控制方法目前还还不够完善,其中传统的气候态校正方法存在的问题主要表现为会受到异常剖面和异常斜率系数的影响。本文针对这些问题,提出了一套气候态校正方法的改进方案,包括:1)使用中值法取代平均值法;2)利用比较浮标观测的溶解氧饱和度整个剖面与气候态剖面的方法,提出了一种异常剖面的剔除标准;3)提出了一种异常斜率系数的剔除标准。改进后的溶解氧剖面与气候态剖面更为接近,有效避免了异常剖面与异常值的影响,显著提高了Argo浮标观测溶解氧的整体数据质量。
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| 关 键 词： | Argo浮标 溶解氧 气候态校正 斜率系数 异常剖面 |
| 收稿时间： | 2019/1/2 0:00:00 |
| 修稿时间： | 2019/4/5 0:00:00 |
AN IMPROVEMENT ON CLIMATOLOGY-BASED CORRECTION METHOD OF ARGO-OBSERVED DISSOLVED OXYGEN DATA |
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| LIU Ye and XING Xiao-Gang.AN IMPROVEMENT ON CLIMATOLOGY-BASED CORRECTION METHOD OF ARGO-OBSERVED DISSOLVED OXYGEN DATA[J].Oceanologia Et Limnologia Sinica,2019,50(5):994-1001. |
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| Authors: | LIU Ye and XING Xiao-Gang |
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| Institution: | Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China and Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China |
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| Abstract: | To date, the quality control methods on Argo-observed dissolved oxygen data remain inadequate, marked mainly by the vulnerability of classical climatology-based correction method to abnormal float-observed oxygen profiles and abnormal slope coefficients. In this context, we proposed a set of improvements on the classical method, including 1) replacing the average with the median, 2) proposing an Abnormal Profile Elimination Criterion to remove some slope coefficients with abnormal profiles based on comparison between the whole float-observed profile and climatology, and 3) proposing an Outlier Elimination Criterion to remove some outliers of slope coefficients. Using the improved correction coefficients, the corrected oxygen profiles are much closer to the climatology, which could effectively avoid the influence of abnormal profiles and abnormal slope coefficients, and significantly enhance the Argo-observed oxygen data quality. |
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| Keywords: | Argo float dissolved oxygen climatology-based correction slope coefficient abnormal profile |
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