在过去十年中,从太空LiDAR中冬季加速的南极浮游植物净初级产量被低估了
Peng Chen1,2, Zhenhua Zhang3,4, Kelsey Bisson5
1State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China. chenp@sio.org.cn.
Nature communications
|December 12, 2025
概括
南大洋的冬季植物浮游生物净初级产量 (NPP) 正在增加,这是由于海冰的减少所致. 南极冬季NPP的增加对于了解海洋至关重要.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 海洋生物学 海洋生物学
背景情况:
- 南大洋是一个关键的碳汇,植物浮游生物净初级生产 (NPP) 推动了这一过程.
- 南极冬季核电站由于数据限制和卫星传感器在冰冷,低光条件下的挑战而被人理解得很少.
研究的目的:
- 使用太空LiDAR数据量化南极冬季NPP的变化.
- 评估环境因素对冬季核电站趋势的影响.
主要方法:
- 分析了16年的云气溶雷达和红外探路器卫星观测仪器 (CALIOP) (2006-2023) 的数据.
- 利用CALIOP的增强海冰覆盖面来改善对没有冰的海洋区域的观测.
主要成果:
- 检测到冬季NPP的显著增加约为2.2 Tg C yr−1 (P < 0.01).
- 根据CALIOP的数据,无冰海观测量从12.5%增加到80.7%,显示了季节性海冰区,特别是韦德尔海和罗斯海的大量核电站增长.
- 观察到的NPP增加与海冰的减少,光线透的增加和营养物质的混合有关.
结论:
- 南大洋的冬季核电站正在上升,受南方年轮模式和厄尔尼诺-南方振荡等气候模式的影响.
- 这些发现强调了南大洋在全球碳动态中日益重要的重要性.
- 将冬季核电站纳入碳模型对于完善气候变化下的极地碳捕集预测至关重要.
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