An inter-comparison of autonomous in situ instruments for ocean CO2 measurements under laboratory-controlled conditions
An inter-comparison of autonomous in situ instruments for ocean CO2 measurements under laboratory-controlled conditions
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实验室控制条件下用于海洋二氧化碳测量的自主现场仪器的相互比较
DOI：
10.1016/j.marchem.2022.104085
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发表时间：
2022
期刊：
影响因子：
3
通讯作者：
DeGrandpre, Michael D.
中科院分区：
文献类型：
--
作者：
Shangguan, Qipei;Prody, Adam;Wirth, Taylor S.;Briggs, Ellen M.;Martz, Todd R.;DeGrandpre, Michael D.
海洋CO2系统的观测对于理解海洋酸化、海气CO2通量和海洋碳循环具有重要意义。为此，已经开发和使用了各种不同的原位仪器。然而，缺乏对现有传感器技术的相互比较研究。在这项研究中，共有10个仪器，包括市售的pH值，二氧化碳分压（pCO 2），总碱度（AT）传感器进行了测试和比较，在5000 L的海水槽位于斯克里普斯海洋研究所（SIO），加州，美国。该测试进行了约12天（2016年8月16日至28日），其中人工改变了水箱中的条件，以涵盖广泛的AT，pH值和pCO 2以及温度和盐度。为了评估准确度，使用台式仪器对pH值、pCO 2、溶解无机碳（DIC）和AT进行了独立测量。我们还评估了内部一致性，比较从传感器测量的参数与计算的参数，例如从AT和pH值计算的pCO 2与直接测量的pCO 2相比。DIC可以在广泛的条件下从测量的pH值或pCO 2与AT配对中精确得出（±5 μmol/kg内）。通过离散样本确定的传感器准确度足以用于短期和季节性动力学研究，但由于研究的简短性，无法评估其确定长期（例如气候）变率的能力。这些结果为未来海洋酸化和碳循环研究提供了传感器性能和数据质量控制策略的见解。
Observations of the marine CO2system are important for understanding ocean acidification, air-sea CO2fluxes and the marine carbon cycle in general. A variety of autonomousin situinstruments have been developed and used towards this end. There is, however, a lack of inter-comparison studies of currently available sensor technologies. In this study, a total of 10 instruments including commercially available pH, partial pressure of CO2(pCO2), and total alkalinity (AT) sensors were tested and compared in a 5000 L seawater tank located at Scripps Institution of Oceanography (SIO), California, USA. The test took place over ~12 days (August 16 to 28, 2016) where conditions in the tank were artificially varied to encompass a wide range of AT, pH andpCO2as well as temperature and salinity. To assess accuracy, independent measurements of pH,pCO2, dissolved inorganic carbon (DIC) and ATwere made using benchtop instrumentation. We also evaluated internal consistency, comparing the measured parameter from the sensors with the calculated parameter, e.g.pCO2calculated from ATand pH compared with directly measuredpCO2. DIC can be precisely derived (within ±5 μmol/kg) over a wide range of conditions from measured pH orpCO2paired with AT. Sensor accuracy established by discrete samples is sufficient for short-term and seasonal dynamical studies, but their ability in determining long-term (e.g. climate) variability could not be evaluated because of the brevity of the study. These results provide insights into sensor performance and strategies for data quality control for future studies of ocean acidification and carbon cycling.
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北大西洋 R/V 流星巡航 36/1 期间 fCO2 系统的国际海上比对
影响因子：
3
作者：
A. Körtzinger;L. Mintrop;L. Mintrop;D. Wallace;K. Johnson;K. Johnson;C. Neill;B. Tilbrook;P. Towler;H. Inoue;M. Ishii;G. Shaffer;Rodrigo F. Torres Saavedra;E. Ohtaki;E. Yamashita;A. Poisson;C. Brunet;B. Schauer;C. Goyet;G. Eischeid
通讯作者：
G. Eischeid
影响因子：
7.8
作者：
Cyronak, Tyler;Takeshita, Yuichiro;Andersson, Andreas J.
通讯作者：
Andersson, Andreas J.
影响因子：
2.7
作者：
Hales, B;Chipman, D;Takahashi, T
通讯作者：
Takahashi, T
影响因子：
5.2
作者：
DeGrandpre, Michael;Evans, Wiley;Steele, Michael
通讯作者：
Steele, Michael
测量北冰洋的 pH 值：比色法还是 SeaFET？
DOI：
10.1016/j.mio.2016.05.006
发表时间：
2016
期刊：
Methods in Oceanography
影响因子：
--
作者：
Rérolle V
通讯作者：
Rérolle V