scholarly journals Diffusion-type model of the global carbon cycle for the estimation of dose to the world population from releases of carbon-14 to the atmosphere

1977 ◽  
Author(s):  
G.G. Killough
Keyword(s):  
Carbon Cycle ◽  
Global Carbon Cycle ◽  
Type Model ◽  
World Population ◽  
Diffusion Type ◽  
Carbon 14 ◽  
The World ◽  
Global Carbon

scholarly journals FITOPLANKTON DAN SIKLUS KARBON GLOBAL

OSEANA ◽  
2019 ◽  
Vol 44 (2) ◽  
pp. 35-48
Author(s):  
Mochamad Ramdhan Firdaus ◽  
Lady Ayu Sri Wijayanti
Keyword(s):  
Carbon Cycle ◽  
Primary Productivity ◽  
Net Primary Productivity ◽  
Sedimentary Rocks ◽  
Global Carbon Cycle ◽  
Biological Pump ◽  
Large Role ◽  
The World ◽  
Pump Mechanism ◽  
Global Carbon

PHYTOPLANKTON AND GLOBAL CARBON CYCLE. Scientists around the world believe that phytoplankton, although microscopic, have a large role in the global carbon cycle. Various research results show that the net primary productivity of all phytoplankton in the sea is almost as large as the net primary productivity of all plants on land. Phytoplankton through the process of photosynthesis absorbs 40-50 PgC / year from the atmosphere. Also, phytoplankton is known to be responsible for transporting carbon from the atmosphere to the seafloor through the carbon biological pump mechanism. Phytoplankton from the coccolithophores group is known to play a role in the sequestration of carbon on the seabed through the carbonate pump mechanism. The mechanism is capable of sequestering carbon for thousands of years on the seabed in the form of sedimentary rocks (limestone).

The climate as political space: on the territorialisation of the global carbon cycle

2006 ◽  
Vol 32 (2) ◽  
pp. 217-235 ◽  
Author(s):  
EVA LÖVBRAND ◽  
JOHANNES STRIPPLE
Keyword(s):  
Carbon Cycle ◽  
International Relations ◽  
Global Carbon Cycle ◽  
The Political ◽  
Political Transformation ◽  
The World ◽  
Climate Space ◽  
Global Movements ◽  
The One ◽  
Global Carbon

International Relations have increasingly projected an image of the world where territoriality has lost its organising force. The global movements of people, information, capital and pollution are seen as signs of increasing deterritorialisation. Climate change is one of these issues ‘beyond borders’ that due to its global framing has been established within the international. This article is an investigation into the political geography of the carbon cycle. We approach the tension between the representations of climate space as global and deterritorial on the one hand, and political practices that reterritorialise the climate on the other. We trace the political transformation of the global carbon cycle into ‘national sinks’ and argue that the two tendencies of deterritorialisation and reterritorialisation of climate space mirror the spatial assumptions of IR; the national inside and global outside.

scholarly journals Expanding the oceanic carbon cycle: Jellyfish biomass in the biological pump

2011 ◽  
Vol 33 (3) ◽  
pp. 35-39 ◽  
Author(s):  
Mario Lebrato ◽  
Daniel O.B. Jones
Keyword(s):  
Carbon Cycle ◽  
Food Source ◽  
Global Carbon Cycle ◽  
Gelatinous Zooplankton ◽  
Biological Pump ◽  
Carbon Transfer ◽  
The World ◽  
Atmospheric Co2 Concentrations ◽  
Oceanic Carbon ◽  
Global Carbon

With atmospheric CO2 concentrations increasing, it is vital to improve our understanding of the processes that sequester carbon, the most important being the biological pump of the world's oceans. Jellyfish might not spring to mind as major players in the global carbon cycle but the evidence of large jelly-falls on the world's deep seabeds suggests that gelatinous zooplankton have a greater role in the biological pump than we thought previously. Jellyfish blooms may be increasing and dead jellyfish may offer a rapidly accessible food source as they sink. We have developed a model to explore the remineralization of gelatinous carcasses as they sink, which is allowing us to predict the effects of jelly-falls on carbon transfer around the world.

Golden age of gas and its impact on the world energy, the global carbon cycle and climate

2015 ◽  
Vol 62 (5) ◽  
pp. 311-321 ◽  
Author(s):  
A. G. Tereshin ◽  
A. V. Klimenko ◽  
V. V. Klimenko
Keyword(s):  
Carbon Cycle ◽  
Golden Age ◽  
Global Carbon Cycle ◽  
World Energy ◽  
The World ◽  
Global Carbon

Are response function representations of the global carbon cycle ever interpretable?

Tellus B ◽  
2009 ◽  
Vol 61 (2) ◽  
Author(s):  
Sile Li ◽  
Andrew J. Jarvis ◽  
David T. Leedal
Keyword(s):  
Carbon Cycle ◽  
Response Function ◽  
Global Carbon Cycle ◽  
Global Carbon

EPR-derived structures of flavin radical and iron-sulfur clusters from Methylosinus sporium 5 reductase

2021 ◽  
Author(s):  
Han Sol Jeong ◽  
Sugyeong Hong ◽  
Hee Seon Yoo ◽  
Jin Kim ◽  
Yujeong Kim ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Crucial Role ◽  
Methane Monooxygenase ◽  
Global Carbon Cycle ◽  
Ambient Conditions ◽  
Iron Sulfur Clusters ◽  
Iron Sulfur ◽  
Greenhouse Effects ◽  
Global Carbon ◽  
Significant Attention

Methane monooxygenase (MMO) has attracted significant attention owing to its crucial role in the global carbon cycle; it impedes greenhouse effects by converting methane to methanol under ambient conditions. The...

scholarly journals Amazonian Fire Events Disturbed the Global Carbon Cycle: A Study from 2019 Amazon Wildfire Using Google Earth Engine

2020 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Subhajit Bandopadhyay ◽  
Dany A. Cotrina Sánchez
Keyword(s):  
Carbon Cycle ◽  
Carbon Sink ◽  
Brazilian Amazon ◽  
Global Carbon Cycle ◽  
Forest Productivity ◽  
Google Earth ◽  
Comparative Approach ◽  
Burned Area ◽  
Google Earth Engine ◽  
Global Carbon

An unprecedented number of wildfire events during 2019 throughout the Brazilian Amazon caught global attention, due to their massive extent and the associated loss in the Amazonian forest—an ecosystem on which the whole world depends. Such devastating wildfires in the Amazon has strongly hampered the global carbon cycle and significantly reduced forest productivity. In this study, we have quantified such loss of forest productivity in terms of gross primary productivity (GPP), applying a comparative approach using Google Earth Engine. A total of 12 wildfire spots have been identified based on the fire’s extension over the Brazilian Amazon, and we quantified the loss in productivity between 2018 and 2019. The Moderate Resolution Imaging Spectroradiometer (MODIS) GPP and MODIS burned area satellite imageries, with a revisit time of 8 days and 30 days, respectively, have been used for this study. We have observed that compared to 2018, the number of wildfire events increased during 2019. But such wildfire events did not hamper the natural annual trend of GPP of the Amazonian ecosystem. However, a significant drop in forest productivity in terms of GPP has been observed. Among all 11 observational sites were recorded with GPP loss, ranging from −18.88 gC m−2 yr−1 to −120.11 gC m−2 yr−1, except site number 3. Such drastic loss in GPP indicates that during 2019 fire events, all of these sites acted as carbon sources rather than carbon sink sites, which may hamper the global carbon cycle and terrestrial CO2 fluxes. Therefore, it is assumed that these findings will also fit for the other Amazonian wildfire sites, as well as for the tropical forest ecosystem as a whole. We hope this study will provide a significant contribution to global carbon cycle research, terrestrial ecosystem studies, sustainable forest management, and climate change in contemporary environmental sciences.

Distribution of radiocarbon as a test of global carbon cycle models

1995 ◽  
Vol 9 (1) ◽  
pp. 153-166 ◽  
Author(s):  
Atul K. Jain ◽  
Haroon S. Kheshgi ◽  
Martin I. Hoffert ◽  
Donald J. Wuebbles
Keyword(s):  
Carbon Cycle ◽  
Global Carbon Cycle ◽  
Global Carbon
Sign in / Sign up

Export Citation Format

Share Document