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Oceanography: Anthropogenic carbon and ocean pH
It is found that oceanic absorption of CO2 from fossil fuels may result in larger pH changes over the next several centuries than any inferred from the geological record of the past 300 million years. Expand
The life span of the biosphere revisited
A more elaborate model that includes a more accurate treatment of the greenhouse effect of CO2, a biologically mediated weathering parameterization, and the realization that C4 photosynthesis can persist to much lower concentrations of atmospheric CO2 is found to find that a C4-plant-based biosphere could survive for at least another 0.9 Gyr to 1.5 Gyr after the present time. Expand
Testing global ocean carbon cycle models using measurements of atmospheric O2 and CO2 concentration
We present a method for testing the performance of global ocean carbon cycle models using measurements of atmospheric O2 and CO2 concentration. We combine these measurements to define a tracer,Expand
Susceptibility of the early Earth to irreversible glaciation caused by carbon dioxide clouds
The authors' simulations of the early Earth, incorporating the possible formation of highly reflective CO2 clouds, suggest that the Earth might not be habitable today had it not been warm during the first part of its history. Expand
An Issue of Permanence: Assessing the Effectiveness of Temporary Carbon Storage
In this paper, we present a method to quantify the effectiveness of carbon mitigation options taking into account the `permanence' of the emissions reduction. While the issue of permanence is mostExpand
Advanced Technology Paths to Global Climate Stability: Energy for a Greenhouse Planet
It is concluded that a broad range of intensive research and development is urgently needed to produce technological options that can allow both climate stabilization and economic development. Expand
Regional variability in the vertical flux of particulate organic carbon in the ocean interior
[1] Carbon transport within sinking biogenic matter in the ocean contributes to the uptake of CO2 from the atmosphere. Here we assess the extent to which particulate organic carbon (POC) transport toExpand
Geoengineering Earth's radiation balance to mitigate CO2‐induced climate change
To counteract anthropogenic climate change, several schemes have been proposed to diminish solar radiation incident on Earth's surface. These geoengineering schemes could reverse global annual meanExpand
Energy implications of future stabilization of atmospheric CO2 content
The United Nations Framework Convention on Climate Change calls for “stabilization of greenhouse-gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenicExpand
Seasonal and latitudinal variability of troposphere Δ14CO2: Post bomb contributions from fossil fuels, oceans, the stratosphere, and the terrestrial biosphere
initially caused by stratosphere-troposphere exchange, with the injection of bomb 14 Ci nto the troposphere during winter and spring mixing. Here we show how fossil, ocean, and terrestrial biosphereExpand