Determining Atlantic Ocean province contrasts and variations

Determining Atlantic Ocean province contrasts and variations
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确定大西洋省份的对比和变化

DOI:
10.1016/j.pocean.2016.12.004
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发表时间:
2017
影响因子:
4.1
通讯作者:
A. Rees
A. Rees
中科院分区:
地球科学1区
文献类型:
--
作者:
T. Smyth;G. Quartly;T. Jackson;G. Tarran;M. Woodward;C. Harris;C. Gallienne;Rob Thomas;R. Airs;D. Cummings;R. Brewin;V. Kitidis;J. Stephens;Mike Zubkov;A. Rees

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大西洋经向样带(AMT)系列在过去的二十年中进行了25次巡航,产生了丰富的深度分辨率生物地球化学情景数据资源,包括丰富的核心变量。这些多个核心数据集是AMT操作的关键,如温度、盐度、氧气和无机营养物质,通常只用作背景化假设驱动过程研究的辅助测量。本文分析了这些核心形势变量,以及从卫星地球观测(EO)和建模中获得的数据,以确定过去20年在AMT上通过大西洋遇到的特征海洋省变化。EO和模型分析显示了各省关键环境变量的变化,如地表水流、净热通量和随后的大规模生物响应,如初级生产。他们的核心数据集分析可以量化热带氧最小带等特征的变化,并显示各省之间在营养化学计量上的明显差异。这种观测和关系可以在盆地尺度的生物地球化学模型中使用,以确定实际的变化范围。
The Atlantic Meridional Transect (AMT) series of twenty-five cruises over the past twenty years has produced a rich depth-resolved biogeochemicalin situdata resource consisting of a wealth of core variables. These multiple core datasets, key to the operation of AMT, such as temperature, salinity, oxygen and inorganic nutrients, are often only used as ancillary measurements for contextualising hypothesis-driven process studies. In this paper these corein situvariables, alongside data drawn from satellite Earth Observation (EO) and modelling, have been analysed to determine characteristic oceanic province variations encountered over the last twenty years on the AMT through the Atlantic Ocean. The EO and modelling analysis shows the variations of key environmental variables in each province, such as surface currents, the net heat flux and subsequent large scale biological responses, such as primary production. Thein situcore dataset analysis allows the variation in features such as the tropical oxygen minimum zone to be quantified as well as showing clear contrasts between the provinces in nutrient stoichiometry. Such observations and relationships can be used within basin scale biogeochemical models to set realistic variation ranges.
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