了解坦噶尼喀湖的三维流体动力学:使用3D ROMS模型建模环流模式的见解

IF 4.6 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Tumaini Kamulali, Paul Goodman, Joellen Russell, Andrew Cohen
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引用次数: 0

摘要

这项研究模拟了坦噶尼喀湖的环流模式。坦噶尼喀湖是东非和中非一个重要的经济湖泊,近几十年来经历了显著的变暖,渔业产量减少。我们使用区域海洋模拟系统来分析湖内的热分层、风驱动过程和环流动力学。我们的研究结果表明,2001年至2020年期间,地表温度的季节性变化范围为~ 25.8°C至~ 27.8°C,在150米深度以下显著增加了0.4°C。5 - 8月,南部地区出现一次上升流,11 - 2月,北部地区出现二次上升流。水深变化影响上升流和下升流过程。我们的研究结果强调大气和水动力因子之间的相互作用调节了养分分布,这对渔业和生物多样性至关重要。我们还强调了建模在理解坦噶尼喀湖变暖趋势和对气候变化的生态响应中的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Understanding the 3D Hydrodynamics of Lake Tanganyika: Insights From Modeling Circulation Patterns Using a 3D ROMS Model

Understanding the 3D Hydrodynamics of Lake Tanganyika: Insights From Modeling Circulation Patterns Using a 3D ROMS Model

Understanding the 3D Hydrodynamics of Lake Tanganyika: Insights From Modeling Circulation Patterns Using a 3D ROMS Model

Understanding the 3D Hydrodynamics of Lake Tanganyika: Insights From Modeling Circulation Patterns Using a 3D ROMS Model

This study simulates circulation patterns in Lake Tanganyika, an economically vital lake in East and Central Africa that has experienced significant warming, and reduced fishery yields in recent decades. We use Regional Ocean Modeling System to analyze thermal stratification, wind-driven processes, and circulation dynamics within the lake. Our findings show surface temperatures ranging from ∼25.8°C to ∼27.8°C seasonally, with a notable increase of up to 0.4°C below 150 m depth between 2001 and 2020. Primary upwelling occurs in the southern region from May to August, while secondary upwelling is observed in the north from November to February. Bathymetric variations influence upwelling and downwelling processes. Our results emphasize that the interaction between atmospheric and hydrodynamic factors regulates the nutrient distribution, which is crucial for fisheries and biodiversity. We also highlight the importance of modeling in understanding the warming trends and ecological responses of Lake Tanganyika to climate change.

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来源期刊
Geophysical Research Letters
Geophysical Research Letters 地学-地球科学综合
CiteScore
9.00
自引率
9.60%
发文量
1588
审稿时长
2.2 months
期刊介绍: Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.
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