Surface ocean conditions of the Arabian Sea using two different wind forcings in the regional ocean modelling system setup

IF 2.2 3区地球科学 Q2 OCEANOGRAPHY Ocean Dynamics Pub Date : 2024-09-05 DOI:10.1007/s10236-024-01637-4

Prabha Kushwaha, Vivek Kumar Pandey, Bijan Kumar Das

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Abstract

The study investigates the impact of two different wind forcings on the surface ocean conditions of the Arabian Sea (AS) using the Regional Ocean Modelling System (ROMS) simulations. The wind forcings used in the ROMS simulations are the climatological Comprehensive Ocean-Atmosphere Data Set (COADS) winds and the Quik Scatterometer (QuikSCAT) satellite sea-winds. These two wind forcings are implemented and evaluated individually to assess their respective influences on the surface ocean conditions such as temperature, salinity, currents, heat fluxes, fresh water flux and diffusivity over the AS. The QuikSCAT winds are seen stronger (up to 2 m/s) over the AS and the wind stress curl is higher (up to 1.5 × 10^− 7 N/m²) in the equatorial region as compared to the COADS winds. Both the simulations have replicated the overall pattern of the surface ocean conditions very well. The stronger QuikSCAT winds simulation has shown higher surface salinity (~ 2 psu) and freshwater fluxes compared to the weaker COADS winds simulation. Again, the strong winds from QuikSCAT have also increased the surface current (up to 0.2 m/s) and horizontal diffusivity in the southern and western boundary of the AS. The implementation of wind forcing provides valuable insights into the dynamics of the regional ocean system and its response to atmospheric conditions. Therefore, the implementation of COADS and QuikSCAT winds in the ROMS simulations will enhance our ability to accurately simulate and predict the behaviour of the surface ocean conditions of the AS.

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在区域海洋模拟系统设置中使用两种不同风力作用的阿拉伯海表层海洋条件

该研究利用区域海洋模拟系统（ROMS）模拟，调查了两种不同风力作用对阿拉伯海（AS）表层海洋条件的影响。ROMS 模拟中使用的风驱动力是气候学海洋大气综合数据集（COADS）风和 Quik Scatterometer（QuikSCAT）卫星海风。对这两种风的作用力分别进行了实施和评估，以评估它们各自对表层海洋条件（如 AS 上的温度、盐度、洋流、热通量、淡水通量和扩散率）的影响。与 COADS 风相比，QuikSCAT 风在 AS 上的强度更大（达 2 米/秒），赤道地区的风应力卷曲也更高（达 1.5 × 10- 7 N/m2）。两种模拟都很好地再现了表层海洋条件的整体模式。与较弱的 COADS 风模拟相比，较强的 QuikSCAT 风模拟显示了较高的表层盐度（约 2 psu）和淡水通量。同样，QuikSCAT 的强风也增加了 AS 南部和西部边界的表层洋流（高达 0.2 米/秒）和水平扩散率。风强迫的实施为了解区域海洋系统的动态及其对大气条件的响应提供了宝贵的信息。因此，在 ROMS 模拟中实施 COADS 和 QuikSCAT 风将提高我们准确模拟和预测 AS 表层海洋状况的能力。

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来源期刊

Ocean Dynamics 地学-海洋学

CiteScore

5.40

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Ocean Dynamics is an international journal that aims to publish high-quality peer-reviewed articles in the following areas of research: Theoretical oceanography (new theoretical concepts that further system understanding with a strong view to applicability for operational or monitoring purposes); Computational oceanography (all aspects of ocean modeling and data analysis); Observational oceanography (new techniques or systematic approaches in measuring oceanic variables, including all aspects of monitoring the state of the ocean); Articles with an interdisciplinary character that encompass research in the fields of biological, chemical and physical oceanography are especially encouraged.