气候变化领域集成服务门户(CCPortal): The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean

CCPortal

DOI	10.1029/2019GB006239
	The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean
	Roobaert A.; Laruelle G.G.; Landschützer P.; Gruber N.; Chou L.; Regnier P.
发表日期	2019
ISSN	0886-6236
EISSN	1944-9224
起始页码	1693
结束页码	1714
卷号	33 期号:12
英文摘要	In contrast to the open ocean, the sources and sinks for atmospheric carbon dioxide (CO2) in the coastal seas are poorly constrained and understood. Here we address this knowledge gap by analyzing the spatial and temporal variability of the coastal air-sea flux of CO2 (FCO2) using a recent high-resolution (0.25°) monthly climatology for coastal sea surface partial pressure in CO2 (pCO2). Coastal regions are characterized by CO2 sinks at temperate and high latitudes and by CO2 sources at low latitude and in the tropics, with annual mean CO2 flux densities comparable in magnitude and pattern to those of the adjacent open ocean with the exception of river-dominated systems. The seasonal variations in FCO2 are large, often exceeding 2 mol C m−2 year−1, a magnitude similar to the variations exhibited across latitudes. The majority of these seasonal variations stems from the air-sea pCO2 difference, although changes in wind speed and sea ice cover can also be significant regionally. Globally integrated, the coastal seas act currently as a CO2 sink of −0.20 ± 0.02 Pg C year−1, with a more intense uptake occurring in summer because of the disproportionate influence of high-latitude shelves in the Northern Hemisphere. Combined with estimates of the carbon sinks in the open ocean and the Arctic, this gives for the global ocean, averaged over the 1998 to 2015 period an annual net CO2 uptake of −1.7 ± 0.3 Pg C year−1. ©2019. American Geophysical Union. All Rights Reserved.
英文关键词	air-sea CO2 exchange; coastal seas; continental shelves; ocean carbon cycle; seasonality
语种	英语
scopus关键词	carbon cycle; carbon dioxide; coastal zone; global perspective; ice cover; latitude; partial pressure; sea ice; sea surface; seasonality; source-sink dynamics; spatiotemporal analysis; wind velocity; Arctic
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129681
作者单位	Department of Geosciences, Environment & Society, Université Libre de Bruxelles, Brussels, Belgium; Max Planck Institute for Meteorology, Hamburg, Germany; Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland
推荐引用方式 GB/T 7714	Roobaert A.,Laruelle G.G.,Landschützer P.,et al. The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean[J],2019,33(12).
APA	Roobaert A.,Laruelle G.G.,Landschützer P.,Gruber N.,Chou L.,&Regnier P..(2019).The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean.Global Biogeochemical Cycles,33(12).
MLA	Roobaert A.,et al."The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean".Global Biogeochemical Cycles 33.12(2019).