从大气O2和CO2组成的变化中量化海洋的热量吸收
L Resplandy1, R F Keeling2, Y Eddebbar2
1Department of Geosciences and Princeton Environmental Institute, Princeton University, Princeton, NJ, USA. laurer@princeton.edu.
海洋正在迅速变暖, 吸收大量的热量并导致全球能源失衡. 这项研究使用大气中的氧气和二氧化碳独立测量海洋的热量吸收,
科学领域:
- 气候科学
- 海洋学
- 大气化学
背景情况:
- 海洋是地球热惯性的主要驱动力, 吸收大量热量.
- 之前的海洋热量吸收估计依赖于有限的数据集,并面临不确定性,特别是在2007年之前.
- 自2007年以来, 阿戈浮标项目已经改善了海洋温度测量.
研究的目的:
- 提供海洋吸收热量的独立估计.
- 为了量化行星的能量失衡.
- 隔离海洋变暖对大气气体度的影响.
主要方法:
- 使用大气氧 (O2) 和二氧化碳 (CO2) 的测量作为全海洋温度计.
- 分析高精度的O2测量可以追溯到1991年.
- 从人为排放和二氧化碳吸收中隔离海洋变暖效应.
主要成果:
- 在1991年至2016年期间,海洋平均每年获得1.33 ± 0.20 × 10^22焦耳的热量.
- 这相当于每平方米0.83±0.11瓦的行星能量失衡.
- 海洋变暖对氧气和二氧化碳排放的影响被成功分离出来.
结论:
- 海洋变暖的程度高于之前的估计.
- 这些发现对气候敏感性和海平面上升预测有重大影响.
- 独立的测量方法证实海洋大量吸收热量.
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