在赤道太平洋的遥感生物生产
D Turk1, M J McPhaden, A J Busalacchi
1Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J1.
概括
厄尔尼诺和拉尼娜现象显著影响海洋生物生产和热带太平洋的碳捕获. 这些气候周期导致全球碳循环的重大自然波动.
科学领域:
- * 海洋学 海洋学
- * 生物地质化学
- * 气候科学 气候科学
背景情况:
- * 厄尔尼诺和拉尼娜是影响热带太平洋的主要气候模式.
- * 这些现象影响海洋学条件和海洋生态系统.
- * 了解它们对生物地球化学循环的影响对于全球气候建模至关重要.
研究的目的:
- * 评估厄尔尼诺和拉尼娜对生物地球化学周期的净影响.
- * 在厄尔尼诺/拉尼娜期间量化生物生产的变化.
- * 确定这些循环对全球碳捕获变化的贡献.
主要方法:
- *利用了船只,浮标和卫星观测的组合.
- *分析了来自热带太平洋盆地的数据.
- *专注于1992年至2000年的观察期.
主要成果:
- * 在1997-1999年厄尔尼诺/拉尼诺现象期间,生物生产变化超过100%.
- * 观察到全球碳捕获的显著跨年变化.
- *确定了厄尔尼诺/拉尼诺周期作为自然碳循环扰乱的主要驱动因素.
结论:
- * 厄尔尼诺和拉尼娜事件导致热带太平洋生物地球化学周期的大幅变化.
- * 这些气候模式显著影响全球碳封存.
- * 该研究强调了这些时间尺度上全球碳循环的最大已知的自然扰动.
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