Global ocean carbon uptake: magnitude, variability and trends
نویسندگان
چکیده
Introduction Conclusions References
منابع مشابه
ESTIMATING GLOBAL CARBON TRENDS USING IN-SITU pCO2 OBSERVATIONS
While nearly half of total CO2 emissions over the last 50 years remain in the atmosphere, this fraction is subject to large year-to-year variability due to erratic land and ocean sink rates (Le Quéré et al. 2009). In order to investigate the tendency for oceanic CO2 uptake around the globe, long-term trends must be determined from available historical data. Recent studies of the North Atlantic ...
متن کاملRecent trends and drivers of regional sources and sinks of carbon dioxide
The land and ocean absorb on average just over half of the anthropogenic emissions of carbon dioxide (CO2) every year. These CO2 “sinks” are modulated by climate change and variability. Here we use a suite of nine dynamic global vegetation models (DGVMs) and four ocean biogeochemical general circulation models (OBGCMs) to estimate trends driven by global and regional climate and atmospheric CO2...
متن کاملConvergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales
Oceanic uptake of carbon dioxide substantially reduces the rate at which anthropogenic carbon accumulates in the atmosphere1, slowing global climate change. Some studies suggest that the rate at which the oceans take up carbon has significantly decreased in recent years2–8. Others suggest that decadal variability confounds the detection of long-term trends9–11. Here, we examine trends in the pa...
متن کاملData-based estimates of the ocean carbon sink variability – First results of the Surface Ocean pCO2 Mapping intercomparison (SOCOM)
Using measurements of the surface-ocean CO2 partial pressure (pCO2) and 14 different pCO2 mapping methods recently collated by the Surface Ocean pCO2 Mapping intercomparison (SOCOM) initiative, variations in regional and global sea–air CO2 fluxes are investigated. 5 Though the available mapping methods use widely different approaches, we find relatively consistent estimates of regional pCO2 sea...
متن کاملTrace Metal-Carbon Interactions in Marine Phytoplankton: Implications on the Cellular, Regional, and Global Scale
Trace metal availability modulates carbon uptake by phytoplankton, which in turn affects the carbon cycle on regional and global scales. This thesis investigates mechanisms and implications of trace metal-phytoplankton interactions at cellular, regional and global scales. On the cellular scale, we develop a model to explain carbon isotopic fractionation of photosynthesis ( p) as a function of c...
متن کامل