A one-dimensional modeling study of the diurnal cycle in the equatorial Atlantic at the PIRATA buoys during the EGEE-3 campaign
A one-dimensional modeling study of the diurnal cycle in the equatorial Atlantic at the PIRATA buoys during the EGEE-3 campaign
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EGEE-3 活动期间 PIRATA 浮标赤道大西洋昼夜周期的一维建模研究
DOI：
10.1007/s10236-010-0337-8
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发表时间：
2011
期刊：
影响因子：
2.3
通讯作者：
R. Hummels
中科院分区：
文献类型：
--
作者：
G. Caniaux;Y. DuPenhoat;M. Dengler;H. Giordani;R. Hummels
利用一维模式分析了不同气象条件下赤道大西洋在局地尺度上的响应。这项研究是在热带大西洋试验研究系泊阵列的三个系泊浮标位置进行的，它们分别位于西经10°，北纬0°;西经10°，南纬6°;西经10°，南纬10°。在2006年5月至6月的EGEE-3（海洋环流和几内亚湾变化研究）活动期间，对每个浮标进行了为期2天的维护。在船上，收集了高分辨率的大气参数以及温度、盐度和水流剖面。这些数据在这里被用来初始化，强制，并验证一个一维模型，以研究昼夜海洋混合层的变化。结果表明，海表温度的日变化主要是由太阳热通量驱动的。近地表温度对白天加热和夜间冷却的日响应具有十分之几度的振幅。计算的日热量收支在0° N和10° S分别经历了31和27 W m− 2的净变暖趋势，在6° S经历了122 W m− 2的冷却趋势。观察到的和模拟的混合层深度的经验之间的夜间对流相和稳定的昼夜水柱的跳跃。其振幅随气象条件的变化而变化，在10° S时达到最大值（~50 m）。在6°和10° S，观察到阻挡层的存在，这一特征在10° S时更清晰。模拟湍流动能（TKE）耗散率，独立的微观结构测量相比，表明该模型跟踪其昼夜演变相当不错。剪切和浮力产生以及TKE的垂直扩散都对TKE的供应有贡献，但浮力产生是模拟期间TKE的主要来源。
A one-dimensional model is used to analyze, at the local scale, the response of the equatorial Atlantic Ocean under different meteorological conditions. The study was performed at the location of three moored buoys of the Pilot Research Moored Array in the Tropical Atlantic located at 10° W, 0° N; 10° W, 6° S; and 10° W, 10° S. During the EGEE-3 (Etude de la circulation océanique et de sa variabilité dans le Golfe de Guinee) campaign of May–June 2006, each buoy was visited for maintenance during 2 days. On board the ship, high-resolution atmospheric parameters were collected, as were profiles of temperature, salinity, and current. These data are used here to initialize, force, and validate a one-dimensional model in order to study the diurnal oceanic mixed-layer variability. It is shown that the diurnal variability of the sea surface temperatures is mainly driven by the solar heat flux. The diurnal response of the near-surface temperatures to daytime heating and nighttime cooling has an amplitude of a few tenths of degree. The computed diurnal heat budget experiences a net warming tendency of 31 and 27 W m−2at 0° N and 10° S, respectively, and a cooling tendency of 122 W m−2at 6° S. Both observed and simulated mixed-layer depths experience a jump between the nighttime convection phase and the well-stabilized diurnal water column. Its amplitude changes dramatically depending on the meteorological conditions occurring at the stations and reaches its maximum amplitude (~50 m) at 10° S. At 6° and 10° S, the presence of barrier layers is observed, a feature that is clearer at 10° S. Simulated turbulent kinetic energy (TKE) dissipation rates, compared to independent microstructure measurements, show that the model tracks their diurnal evolution reasonably well. It is also shown that the shear and buoyancy productions and the vertical diffusion of TKE all contribute to the supply of TKE, but the buoyancy production is the main source of TKE during the period of the simulation.
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DOI：
--
发表时间：
1978
期刊：
影响因子：
--
作者：
D. Moore;P. Hisard;J. McCreary;J. Merle;J. O'Brien;J. Picaut;J. Verstraete;C. Wunsch
通讯作者：
C. Wunsch
2002年赤道大西洋中东部水平流速变化
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
L. Bunge;C. Provost;A. Kartavtseff
通讯作者：
A. Kartavtseff
2006年寒带春季几内亚湾海洋大气边界层观测
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
M. Leduc;L. Eymard;G. de Coëtlogon
通讯作者：
G. de Coëtlogon
DOI：
10.1016/j.dsr2.2008.12.009
发表时间：
2009-04-01
影响因子：
3
作者：
Takahashi, Taro;Sutherland, Stewart C.;de Baar, Hein J. W.
通讯作者：
de Baar, Hein J. W.
影响因子：
5.2
作者：
Pailler, K;Bourlès, B;Gouriou, Y
通讯作者：
Gouriou, Y