2023年墨西哥湾海洋热浪的热力学

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geophysical Research Letters Pub Date : 2025-02-20 DOI:10.1029/2024GL111768

Shanice T. Bailey, Henri F. Drake, Laura K. Gruenburg, Ryan P. Abernathey, Mariana I. Torres

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引用次数: 0

摘要

本研究旨在了解2023年夏季墨西哥湾（GoM）发生的海洋热浪（MHW）的激活和演变机制。我们量化了将墨西哥湾地表水转化为前所未有的大量极暖水的热力学过程的贡献(>；31.8°C) $(>；31.8{} ^{\保监会}\ mathrm {C })$ .通过对再分析资料的水质量转化分析，我们发现这次强震的成因是由于冬季异常温暖的地表水为该地区准备了强震的复合效应，加上更强的太阳辐射暴露。总地表通量（感热和潜热）的转换；太阳和长波辐射对MHW体积的贡献峰值为17.0 Sv （10.6 ${10}^{6}$ m 3 ${\mathrm{m}}^{3}$）s−1 ${\mathrm{s}}^{-1}$ = Sv)，而残差项（包括混合）在其峰值时抵消了22.3 Sv的影响。2023年MHW的总转换量达到4.9 Sv的峰值。

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The Thermodynamics of the 2023 Gulf of Mexico Marine Heatwave

This study aims to understand the mechanisms of the activation and evolution of the marine heatwave (MHW) that occurred in the Gulf of Mexico (GoM) during summer 2023. We quantified contributions of the thermodynamic processes that transformed surface waters in the GoM into an unprecedented large volume of extremely warm water $(> 31.8 ° C)$ . Through water mass transformation analysis of reanalyses data, we find that the genesis of this MHW was due to the compounding effect of anomalously warm winter surface water priming the region for a MHW, coupled with greater exposure to strong solar radiation. Transformation due to total surface fluxes (sensible and latent heat, solar and longwave radiation) contributed to the MHW volume at a peak rate of 17.0 Sv ( $10^{6}$ $m^{3}$ $s^{- 1}$ = Sv), while the residual term (including mixing) countered the effect by 22.3 Sv at its peak. Total transformation during this 2023 MHW peaked at 4.9 Sv.

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来源期刊

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.