Upwelling that lasted millions of years

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-10-02 DOI:10.1126/science.aeb4832

Yair Rosenthal, Anya V. Hess

引用次数: 0

Abstract

The eastern equatorial Pacific along the coast of the Americas extending from Mexico to Peru is one of the most biologically productive regions of the world’s oceans. In this geographical zone, dissolved nutrients and carbon dioxide gas in deep water move upward to the surface (upwelling), where the gas can escape to the atmosphere. Consequently, this region exerts a major influence on atmospheric carbon dioxide concentration. Many efforts have been made to predict the behavior of this region under future climate conditions (1) by reconstructing ocean behavior in the Pliocene epoch (5.3 million to 2.6 million years ago) as a potential analog (2). On page 45 of this issue, Rafter et al. (3) report that modern-like upwelling in the eastern equatorial Pacific has persisted over 5 million years, which is contradictory to existing paradigms. This suggests a potentially lesser impact of future global warming on upwelling than previously thought.

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上升流持续了数百万年

东赤道太平洋沿着美洲海岸从墨西哥延伸到秘鲁，是世界海洋中生物最丰富的地区之一。在这个地理区域，溶解的营养物质和深水中的二氧化碳气体向上移动到水面（上升流），在那里气体可以逃逸到大气中。因此，该区域对大气中的二氧化碳浓度有主要影响。通过重建上新世（530万至260万年前）的海洋行为作为潜在的类比(2)，已经做出了许多努力来预测该地区在未来气候条件下的行为(1)。在本期的第45页，Rafter等人(3)报告说，赤道东太平洋类似现代的上升流已经持续了500多万年，这与现有的模式相矛盾。这表明未来全球变暖对上升流的影响可能比之前认为的要小。

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

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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