DOI: 10.1002/2016GB005563
Scopus记录号: 2-s2.0-85014021470
论文题名: Correlations of surface ocean pCO2 to satellite chlorophyll on monthly to interannual timescales
作者: Fay A ; R ; , McKinley G ; A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期: 3 起始页码: 436
结束页码: 455
语种: 英语
英文关键词: biological pump
; carbon pump
; chlorophyll
; pCO2
Scopus关键词: annual variation
; bioactivity
; biogeochemistry
; biological production
; carbon cycle
; carbon dioxide
; chlorophyll
; correlation
; ocean color
; satellite data
; sea surface
; seasonal variation
; temporal analysis
; timescale
; Pacific Ocean
; Pacific Ocean (North)
; Southern Ocean
英文摘要: On the mean, ocean carbon uptake is linked to biological productivity, but how biological variability impacts carbon uptake is poorly quantified. Our ability to diagnose past change, understand present variability, and predict the future state of the global carbon cycle requires improving mechanistic understanding in this area. Here we make use of colocated pCO2 and temperature data, a merged surface ocean color product, and physical fields from an ocean state estimate to assess relationships between surface ocean biology and the carbon cycle on seasonal, monthly anomaly, and interannual timescales over the period 1998–2014. Using a correlation analysis on spatial scales from local to basin-scale biomes, we identify the timescales on which ocean productivity could be directly modifying ocean carbon uptake. On seasonal timescales outside of the equatorial Pacific, biome-scale correlations are negative between chlorophyll and pCO2. Though this relationship is pervasive, the underlying mechanisms vary across timescales and biomes. Consistent with previous findings, biological activity is a significant driver of pCO2 seasonality only in the subpolar biomes. For monthly anomalies acting on top of the mean seasonality, productivity and pCO2 changes are significantly correlated in the subpolar North Pacific and Southern Ocean. Only in the Southern Ocean are correlations consistent with a dominant role for biology in the surface ocean carbon cycle on all timescales. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77755
Appears in Collections: 气候变化事实与影响
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作者单位: Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI, United States; Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States
Recommended Citation:
Fay A,R,, McKinley G,et al. Correlations of surface ocean pCO2 to satellite chlorophyll on monthly to interannual timescales[J]. Global Biogeochemical Cycles,2017-01-01,31(3)