Modelling of carbon sink capacity of the Black Sea

Download
index.pdf
2016
Cengiz, Yelis
Show full item record
351
views
77
downloads
The concentration of carbon dioxide in the atmosphere is constantly increasing due to human activities and results in global warming. Since Industrial Revolution 30 and 25 percentages of the anthropogenic atmospheric carbon dioxide are taken up by the forests and by the oceans respectively. Carbon dioxide is rising faster than biosphere can tolerate and the rest of the carbon dioxide which can not be hold, continues to accumulate and causes further heating of the atmosphere. The carbon sink capacity of the oceans declined from 30 percent to 25 percent within the last five decades due to increased sea surface temperatures and changes in the related dynamics. In this thesis, it is aimed to investigate the CO2 system and to evaluate the carbon sink capacity of the Black Sea. Three sources of data are used: i) R/V Knorr 2001 and 2003 Black Sea cruises seawater carbonate chemistry data sets related with air-sea exchange, physical mixing ii)The dataset of meteorological variables such as mean sea level pressure, 10 meter wind speed and hydrological parameter such as sea surface temperature iii) the dataset of partial pressure of CO2 in the atmosphere. These datasets are utilized to set a model allowing evaluating CO2 fluxes. The calculated results for air-sea CO2 fluxes indicate that for 2001 early summer time Black Sea acted as a sink for atmospheric CO2 and for 2003 early spring time the Black Sea acted both as a sink and a source for atmospheric CO2. The developed CO2 model will be a guidance to understand how atmospheric processes interact with the processes in the ocean. Also the outcomes of this thesis will help Turkey to get information which is necessary for defining internal strategy to reduce CO2 emission.
Climatic changes., Carbon dioxide sinks., Carbon dioxide mitigation., Ocean-atmosphere interaction., Seawater
http://etd.lib.metu.edu.tr/upload/12620053/index.pdf
https://hdl.handle.net/11511/25705
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Simulating CO2 sequestration in a depleted gas reservoir
Özkılıç, Öke İsmet; Gümrah, Fevzi; Department of Petroleum and Natural Gas Engineering (2005)
Carbon dioxide is one of the greenhouse gases which have strong impacts on the environment and its amount in the atmosphere is far beyond to be ignored. Carbon dioxide levels are projected to be reduced by sequestering it directly to the underground. High amounts of carbon dioxide can be safely stored in underground media for very long time periods. Storage in depleted gas reservoirs provides an option for sequestering carbon dioxide. In 2002, production of Kuzey Marmara gas reservoir has been stopped due t...
Recent advances in heterogeneous catalysts for the effective electroreduction of carbon dioxide to carbon monoxide
Eren, Enis Oğuzhan; Özkar, Saim (2021-09-15)
The electrochemical conversion of carbon dioxide into low carbon fuels is a very convenient way of reducing the concentration of atmospheric CO2, which is the main cause of global warming. CO is known to be the most common and profitable product of CO2 reduction due to its low energy requirement and reaction simplicity. However, the viability of the process still depends on affordable and efficient catalysts. In this review, an overview is provided on recent advances in developing highly efficient heterogen...
Estimation of carbon footprint: a case study for Middle East Technical University
Turanlı, Ayşe Merve; Mehmetoğlu, Mustafa Tanju; Okandan, Ender; Department of Petroleum and Natural Gas Engineering (2015)
As the amount of the greenhouse gas emission increases, its effect on climate change becomes accordingly important. This fact is proved by the measurements conducted by NASA in terms of mole fraction of CO2. After 1950’s due to rapid rise in industrial activity of post-industrial revolution period, CO2 amount in the air increased constantly. Atmospheric concentration of CO2 increases at an accelerating rate . In year 2014, the CO2 emission value had reached 398.78 ppm. This increase led the investigators to...
Cap rock integrity in CO₂ storage
Dalkhaa, Chantsalmaa; Okandan, Ender; Department of Petroleum and Natural Gas Engineering (2010)
One way to reduce the amount of CO2 in the atmosphere for the mitigation of climate change is to capture the CO2 and inject it into geological formations. The most important public concern about carbon capture and storage (CCS) is whether stored CO2 will leak into groundwater sources and finally into the atmosphere. To prevent the leakage, the possible leakage paths and the mechanisms triggering the paths must be examined and identified. It is known that the leakage paths can be due to CO2 - rock interactio...
Modeling and design of a non-thermal plasma reactor for CO2 dissociation
Ahmed, Humayun; Taylan, Onur; Sustainable Environment and Energy Systems (2017-1)
The requirement of energy constantly increases with time, and one of the major sources of energy is fossil fuels which release carbon dioxide upon combustion. Environmentally, CO2 is a greenhouse gas which has had a tremendous impact on the Earth’s climate over the last few decades and the urges serious mitigation methods for the long-term sustainability of the Earth’s climate and ecosystem. One mitigation method is the dissociation of CO2 to produce synthesis gas which can be used to produce alternative hy...
Citation Formats
Y. Cengiz, “Modelling of carbon sink capacity of the Black Sea,” M.S. - Master of Science, Middle East Technical University, 2016.
METU IIS - Integrated Information Service open@metu.edu.tr