To understand the effect of chlorophyll solar absorption on coastal upwelling regions, Siyu Meng and colleagues use a coupled ocean–biogeochemistry model and find that chlorophyll absorption causes colder, stronger upwelling in the Pacific Ocean, but warmer, weaker upwelling in the Atlantic Ocean. The authors attribute this to phytoplankton spatial differences, with the Pacific Ocean having more surface chlorophyll, thus the water is warmed at the surface after being upwelled, while subsurface chlorophyll in the Atlantic Ocean causes warming deeper, with these waters then upwelled to the surface. These results highlight the importance of including biological processes into models to better understand ocean thermal structure and dynamics, as broader climate interactions.

Original reference: Geophys. Res. Lett. 51, e2024GL109714 (2024)

为了了解叶绿素太阳吸收对沿海上升流区域的影响，Siyu Meng 和同事使用海洋-生物地球化学耦合模型，发现叶绿素吸收会导致太平洋上升流更冷、更强，但大西洋上升流更温暖、更弱。作者将此归因于浮游植物的空间差异，太平洋的表面叶绿素较多，因此水在上升流后在表面变暖，而大西洋的地下叶绿素导致变暖更深，然后这些水上升到表面。这些结果强调了将生物过程纳入模型的重要性，以更好地了解海洋热结构和动力学，作为更广泛的气候相互作用。

原始参考：Geophys. Res. Lett.51、e2024GL109714 （2024）