Research Watch: The missing carbon sink

1998 ◽  
Vol 32 (15) ◽  
pp. 375A-375A
Keyword(s):  
Carbon Sink ◽  
Missing Carbon Sink

In search of the missing carbon sink: a model of terrestrial biospheric response to land-use change and atmospheric CO2

Tellus B ◽  
1995 ◽  
Vol 47 (4) ◽  
pp. 501-519 ◽  
Author(s):  
ANTHONY W. KING ◽  
WILLIAM R. EMANUEL ◽  
STAN D. WULLSCHLEGER ◽  
WILFRED M. POST
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Carbon Sink ◽  
Atmospheric Co2 ◽  
Missing Carbon Sink

scholarly journals Venus’ light slab hinders its development of planetary-scale subduction and habitability

2022 ◽  
Author(s):  
Junxing Chen ◽  
Hehe Jiang ◽  
Ming Tang ◽  
Jihua Hao ◽  
Meng Tian ◽  
...  
Keyword(s):  
Plate Tectonics ◽  
Carbon Sink ◽  
Global Scale ◽  
Climate Feedback ◽  
Early Earth ◽  
Crustal Rocks ◽  
Planetary Scale ◽  
Habitable Planet ◽  
Missing Carbon Sink

Abstract Terrestrial planets Venus and Earth have similar sizes, masses, and bulk compositions, but only Earth developed planetary-scale plate tectonics. Plate tectonics generates weatherable fresh rocks and transfers surface carbon back to Earth’s interior, which provides a long-term climate feedback, serving as a thermostat to keep Earth a habitable planet. Yet Venus shares a few common features with early Earth, such as stagnant-lid tectonics and the possible early development of a liquid ocean. Given all these similarities with early Earth, why would Venus fail to develop global-scale plate tectonics? In this study, we explore solutions to this problem by examining Venus’ slab densities under hypothesized subduction-zone conditions. Our petrologic simulations show that eclogite facies may be reached at greater depths on Venus than on Earth, and Venus’ slab densities are consistently lower than Earth’s. We suggest that the lack of sufficient density contrast between the high-pressure metamorphosed slab and mantle rocks may have impeded self-sustaining subduction. Although plume-induced crustal downwelling exists on Venus, the dipping of Venus’ crustal rocks to mantle depth fails to transition into subduction tectonics. As a consequence, the supply of fresh silicate rocks to the surface has been limited. This missing carbon sink eventually diverged the evolution of Venus’ surface environment from that of Earth.

scholarly journals In search of the missing carbon sink: a model of terrestrial biospheric response to land-use change and atmospheric CO2

Tellus B ◽  
1995 ◽  
Vol 47 (4) ◽  
pp. 501-519 ◽  
Author(s):  
Anthony W. King ◽  
William R. Emanuel ◽  
Stan D. Wullschleger ◽  
Wilfred M. Post
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Carbon Sink ◽  
Atmospheric Co2 ◽  
Missing Carbon Sink

The CO2 fertilization factor and the ?missing? carbon sink

1996 ◽  
Vol 33 (1) ◽  
pp. 63-68
Author(s):  
Arturo A. Keller
Keyword(s):  
Carbon Sink ◽  
Co2 Fertilization ◽  
Missing Carbon Sink

scholarly journals Increasing Autochthonous Production in Inland Waters as a Contributor to the Missing Carbon Sink

2021 ◽  
Vol 9 ◽  
Author(s):  
Zaihua Liu ◽  
Hao Yan ◽  
Sibo Zeng
Keyword(s):  
Organic Carbon ◽  
Carbon Cycle ◽  
Carbon Sink ◽  
Global Carbon Cycle ◽  
Inland Waters ◽  
Organic Carbon Burial ◽  
Missing Carbon Sink ◽  
Organic Carbon Storage ◽  
Autochthonous Production ◽  
Global Carbon

Accounting for the residual land sink (or missing carbon sink) has become a major budget focus for global carbon cycle modelers. If we are not able to account for the past and current sources and sinks, we cannot make accurate predictions about future storage of fossil fuel combustion emissions of carbon in the terrestrial biosphere. Here, we show that the autochthonous production (AP) in inland waters appears to have been strengthening in response to changes in climate and land use, as evidenced by decreasing CO2 emissions from and increasing dissolved organic carbon storage and/or organic carbon burial in inland waters during recent decades. The increasing AP may be due chiefly to increasing aquatic photosynthesis caused by global warming and intensifying human activities. We estimate that the missing carbon sink associated with the strengthening AP in inland waters may range from 0.38 to 1.8 Gt C yr-1 with large uncertainties. Our study stresses the potential role that AP may play in the further evolution of the global carbon cycle. Quantitative estimates of future freshwater AP effects on the carbon cycle may also help to guide the action needed to reduce carbon emissions, and increase carbon sinks in terrestrial aquatic ecosystems.

scholarly journals Large invisible carbon sink potential of global clay minerals to mitigate climate change

2021 ◽  
Author(s):  
Huipeng Xi ◽  
Xiaoyong Bai ◽  
Luhua Wu ◽  
Chaojun Li ◽  
Huan Chen
Keyword(s):  
Clay Minerals ◽  
Chemical Weathering ◽  
Carbon Sink ◽  
Linear Trend ◽  
Driving Mechanism ◽  
Comprehensive Understanding ◽  
Negative Effect ◽  
Mitigate Climate Change ◽  
Missing Carbon Sink ◽  
The Tropics

Abstract The chemical weathering of clay minerals widely distributed in the soil have great potential of carbon sink (CS), but the magnitude and influence mechanisms of this CS are unclear. Here we analyse recent changes in five major clay minerals (chlorite, smectite, mica, illite, and vermiculite) carbon sink and its driving factors, using a process-based model (PROFILE) and satellite data assimilation. We show that magnitude of CS in five major clay minerals is about 0.11 Pg C yr-1 from 0 to 2m depth of soil, which is one third of CS in rocks and also may be mainly responsible for the world's missing carbon sink. According to our simulations, the linear trend of CS during 1970-2018 showing that CS in 56% of the world increasing significantly, although the intensification of CS cannot be explained by soil moisture (SM) or soil temperature (STMP) alone, they are the dominant cause of the intensification of CS in the high latitude area and the decrease of CS in parts of the tropics, while in areas where SM is drier, STMP may weaken the former’s negative effect on CS. Besides, simulation results based on medium emission scenarios indicating that CS may increase by about 36% by the end of this century. These results highlight that a more comprehensive understanding of the magnitude and driving mechanism of the soil minerals’ CS is the key to realizing their potential as a nature-based climate solution.

scholarly journals Plant Physiology of the “Missing” Carbon Sink

2001 ◽  
Vol 125 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Christopher B. Field
Keyword(s):  
Plant Physiology ◽  
Carbon Sink ◽  
Missing Carbon Sink

scholarly journals Approaching the Truth of the Missing Carbon Sink

2016 ◽  
Vol 25 (4) ◽  
pp. 1799-1802 ◽  
Author(s):  
Wenfeng Wang ◽  
Xi Chen ◽  
Lunche Wang ◽  
Heng Zhang ◽  
Gang Yin ◽  
...  
Keyword(s):  
Carbon Sink ◽  
Missing Carbon Sink

scholarly journals A probabilistic case for a large missing carbon sink on Mars after 3.5 billion years ago

2020 ◽  
Vol 531 ◽  
pp. 116001 ◽  
Author(s):  
Andy W. Heard ◽  
Edwin S. Kite
Keyword(s):  
Carbon Sink ◽  
Missing Carbon Sink
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