地球海洋植物浮游生物的碳中心动态
1Department of Oceanography, Dalhousie University, Halifax, NS B3H4R2, Canada.
概括
新的Biogeochemical-Argo浮标显示,地球上一半的海洋植物浮游生物的碳生物质隐藏在海洋表面下. 表面-a (Chla) 的测量往往无法捕捉到植物浮游生物质峰值生物质的真实时间.
科学领域:
- 海洋生态海洋生态学
- 生物地质化学生物地质化学
- 海洋学 海洋学 海洋学
背景情况:
- 海洋浮游植物对地球的生态和生物地质化学至关重要.
- 卫星海洋颜色提供了表面甲基 (Chla) 的估计值,这是植物的碳生物质的代理.
- 卫星观测仅限于表面,Chla是不完美的生物质代理,由于细胞变异.
研究的目的:
- 利用全球生物地球化学 (BGC) -Argo浮动器网络来监测植物浮游生物的碳生物质.
- 为植物浮游生物群及其变异性提供深度解决,全球范围的洞察力.
- 评估表面Chla作为总碳生物质及其季节性动态的代理的准确性.
主要方法:
- 从BGC-Argo浮标中分析了大约10万个水柱形状.
- 全球开放海洋植物浮游生物碳生物质库存的估计.
- 碳生物质库存季节周期与地表Chla观测的比较.
主要成果:
- 全球开放海洋植物浮游生物的碳生物质估计约为314 Tg C.
- 总体植物浮游生物碳生物质的一半位于卫星可以探测到的深度以下.
- 表面Chla不准确地反映了全球海洋三分之二的年度生物质峰值时间.
结论:
- BGC-Argo的浮标能够在全球范围内进行前所未有的深度监测,对植物浮游生物的碳生物质进行深度监测.
- 这种监测对于了解气候变化对海洋生态系统的影响至关重要.
- 准确的生物质评估对于评估潜在的地球工程干预措施至关重要.
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