Assimilation of RAPID array observations into an ocean model

Assimilation of RAPID array observations into an ocean model
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将 RAPID 阵列观测数据同化到海洋模型中

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
Gregory C. Smith
Gregory C. Smith
中科院分区:
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文献类型:
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作者:
V. Stepanov;K. Haines;Gregory C. Smith

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将大西洋西部和东部边界26.5°N深层温度和盐度剖面的RAPID数据集同化到1°全球NEMO海洋模型中进行了实验。然后根据观测直接计算的输运量来评估经向翻转环流(MOC)。通过同化2004年之前的EN3上层海洋水文数据库获得了这一短时间内的最佳初始化,之后对同化西部边界5天平均快速剖面的不同方法进行了测试。当西部边界剖面仅在900 m以下(佛罗里达海峡的大致深度,尚未得到很好的解析)被同化时,当T、S观测沿西部深边界从10°N向经向传播时,模式MOC被加强了~ 2 Sv,使其与RAPID阵列传输更接近。
Experiments assimilating the RAPID dataset of deep temperature and salinity profiles at 26.5°N on the western and eastern Atlantic boundaries into a 1° global NEMO ocean model have been performed. The meridional overturning circulation (MOC) is then assessed against the transports calculated directly from observations. The best initialization found for this short period was obtained by assimilating the EN3 upper‐ocean hydrography database prior to 2004, after which different methods of assimilating 5‐day average RAPID profiles at the western boundary were tested. The model MOC is strengthened by ∼ 2 Sv giving closer agreement with the RAPID array transports, when the western boundary profiles are assimilated only below 900 m (the approximate depth of the Florida Straits, which are not well resolved) and when the T,S observations are spread meridionally from 10 to 35°N along the deep western boundary.
DOI: 10.1029/2007gl031731
发表时间: 2007-12-04
影响因子: 5.2
作者:
Bingham, Rory J.;Hughes, Chris W.;Williams, Richard G.
通讯作者: Williams, Richard G.
DOI: 10.5194/osd-8-219-2011
发表时间: 2011
期刊: --
影响因子: --
作者:
Balan Sarojini B
通讯作者: Balan Sarojini B