Variational Data Assimilation for the Sea Thermodynamics Model and Sensitivity of Marine Characteristics to Observation Errors

IF 0.9 4区地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES

Izvestiya Atmospheric and Oceanic Physics Pub Date : 2023-12-25 DOI:10.1134/s0001433823060099

V. P. Shutyaev, E. I. Parmuzin

引用次数: 0

Abstract

The methodology of variational assimilation of observational data for the reconstruction of the initial state and heat fluxes for the mathematical model of sea thermodynamics is presented. An algorithm is developed for estimating the sensitivity of a model solution to errors in observational data. The calculation of the gradient of the response function of the model solution is based on the use of the Hessian of the cost functional. The results of numerical experiments for the Black Sea dynamics model developed at the Institute of Numerical Mathematics, Russian Academy of Sciences, are presented.

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海洋热力学模型的变量数据同化和海洋特征对观测误差的敏感性

摘要介绍了观测数据变异同化方法，以重建海洋热力学数学模型的初始状态和热通量。提出了一种估算模式解对观测数据误差敏感性的算法。模型解响应函数梯度的计算是基于成本函数赫塞斯的使用。介绍了俄罗斯科学院数值数学研究所开发的黑海动力学模型的数值实验结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Izvestiya Atmospheric and Oceanic Physics 地学-海洋学

CiteScore

1.40

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Izvestiya, Atmospheric and Oceanic Physics is a journal that publishes original scientific research and review articles on vital issues in the physics of the Earth’s atmosphere and hydrosphere and climate theory. The journal presents results of recent studies of physical processes in the atmosphere and ocean that control climate, weather, and their changes. These studies have possible practical applications. The journal also gives room to the discussion of results obtained in theoretical and experimental studies in various fields of oceanic and atmospheric physics, such as the dynamics of gas and water media, interaction of the atmosphere with the ocean and land surfaces, turbulence theory, heat balance and radiation processes, remote sensing and optics of both media, natural and man-induced climate changes, and the state of the atmosphere and ocean. The journal publishes papers on research techniques used in both media, current scientific information on domestic and foreign events in the physics of the atmosphere and ocean.