A multi-year time series of observation-based 3D horizontal and vertical quasi-geostrophic global ocean currents
A multi-year time series of observation-based 3D horizontal and vertical quasi-geostrophic global ocean currents
复制标题
基于观测的 3D 水平和垂直准地转全球洋流的多年时间序列
DOI：
10.5194/essd-12-1711-2020
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发表时间：
2020
影响因子：
11.4
通讯作者：
B. Buongiorno Nardelli
中科院分区：
文献类型：
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作者：
B. Buongiorno Nardelli
抽象的。需要对3D海洋环流的估计来改进我们的
了解海洋动力学并评估其对海洋的影响
生态系统和地球气候。在这里，我们展示了OMEGA3D产品，一个
基于观测的(准)全球三维洋流时间序列，覆盖
1993-2018年期间，由意大利Consiglio Nazion ale delle开发
欧洲哥白尼海洋环境监测中的理查
服务(CMEMS)。此数据集是通过应用非绝热
数据驱动的CMEMS-ARMOR3D周报的准地转(QG)诊断模式
重建温度和盐度以及ERA临时通量。外面
在1/4 标称分辨率下，在1500∘高空对赤道带、垂直速度进行了反演，并先后用于
计算水平非地转分量。OMEGA3D总水平速度与完全独立漂移体的均方根差
在两个不同深度(15和1000 m)的观测值随着深度的增加而减少
与从零级地转平衡得到的相应估计值相比，
这意味着估计的垂直速度也可以被认为是可靠的。
OMEGA3D的水平速度也比漂移观测更接近漂移观测
由一组跨越可比时间的重新分析提供的速度
周期，但基于海洋环流中的数据同化
数值模型。完整的OMEGA3D产品(于2020年3月31日发布)现已上市
在https://doi.org/10.25423/cmcc/multiobs_glo_phy_w_rep_015_007(Buongiorno Nardelli，2020a)免费注册。这里用于验证和审查目的的精简子集是
在https://doi.org/10.5281/zenodo.3696885上公开发售
(Buongiorno Nardelli，2020b)。
Abstract. Estimates of 3D ocean circulation are needed to improve our
understanding of ocean dynamics and to assess their impact on marine
ecosystems and Earth climate. Here we present the OMEGA3D product, an
observation-based time series of (quasi-)global 3D ocean currents covering
the 1993–2018 period, developed by the Italian Consiglio Nazionale delle
Ricerche within the European Copernicus Marine Environment Monitoring
Service (CMEMS). This dataset was obtained by applying a diabatic
quasi-geostrophic (QG) diagnostic model to the data-driven CMEMS-ARMOR3D weekly
reconstruction of temperature and salinity as well as ERA Interim fluxes. Outside
the equatorial band, vertical velocities were retrieved in the upper 1500 m at 1∕4 ∘ nominal resolution and successively used to
compute the horizontal ageostrophic components. Root mean square differences between OMEGA3D total horizontal velocities and totally independent drifter
observations at two different depths (15 and 1000 m) decrease with respect
to corresponding estimates obtained from zero-order geostrophic balance,
meaning that estimated vertical velocities can also be deemed reliable.
OMEGA3D horizontal velocities are also closer to drifter observations than
velocities provided by a set of reanalyses spanning a comparable time
period but based on data assimilation in ocean general circulation
numerical models. The full OMEGA3D product (released on 31 March 2020) is available
upon free registration at https://doi.org/10.25423/cmcc/multiobs_glo_phy_w_rep_015_007 (Buongiorno Nardelli, 2020a). The reduced subset used here for validation and review purposes is
openly available at https://doi.org/10.5281/zenodo.3696885
(Buongiorno Nardelli, 2020b).
影响因子：
4.9
作者：
Carton, James A.;Chepurin, Gennady A.;Chen, Ligang
通讯作者：
Chen, Ligang