scholarly journals Net CO<sub>2</sub> fossil fuel emissions of Tokyo estimated directly from measurements of the Tsukuba TCCON site and radiosondes

2020 ◽  
Vol 13 (5) ◽  
pp. 2697-2710
Author(s):  
Arne Babenhauserheide ◽  
Frank Hase ◽  
Isamu Morino

Abstract. We present a simple statistical approach for estimating the greenhouse gas emissions of large cities using accurate long-term data of column-averaged greenhouse gas abundances collected by a nearby FTIR (Fourier transform infrared) spectrometer. This approach is then used to estimate carbon dioxide emissions from Tokyo.FTIR measurements by the Total Carbon Column Observing Network (TCCON) derive gas abundances by quantitative spectral analysis of molecular absorption bands observed in near-infrared solar absorption spectra. Consequently these measurements only include daytime data.The emissions of Tokyo are derived by binning measurements according to wind direction and subtracting measurements of wind fields from outside the Tokyo area from measurements of wind fields from inside the Tokyo area.We estimate the average yearly carbon dioxide emissions from the area of Tokyo to be 70±21±6 MtC yr−1 between 2011 and 2016, calculated using only measurements from the TCCON site in Tsukuba (north-east of Tokyo) and wind-speed data from nearby radiosondes at Tateno. The uncertainties are estimated from the distribution of values and uncertainties of parameters (±21) and from the differences between fitting residuals with polynomials or with sines and cosines (±6).Our estimates are a factor of 1.7 higher than estimates using the Open-Data Inventory for Anthropogenic Carbon dioxide emission inventory (ODIAC), but when results are scaled by the expected daily cycle of emissions, measurements simulated from ODIAC data are within the uncertainty of our results.The goal of this study is not to calculate the best possible estimate of CO2 emissions but to describe a simple method which can be replicated easily and uses only observation data.

Author(s):  
Mary Schmeida ◽  
Ramona Sue McNeal

The Obama Administration Climate Action Plan is enforcing goals to reduce greenhouse gas emissions below 2005 levels by 2020, regulating both stationary and mobile sources of pollution. As energy-related carbon dioxide emissions account for the majority of greenhouse gas emissions, the plan proposed carbon pollution standards for both new and existing plants. Impacts related to upgraded regulations have been projected as both favorable and not, with public and political opinions showing support among some groups and among other interests a concern. The purpose of this chapter is to analyze factors predicting which groups are supportive and non-supportive on setting stricter carbon dioxide emission limits on coal-fired electricity generating power plants. This topic is explored using multivariate regression analysis and individual level data. Findings suggest that comprehension of the policy area and individual financial situation are the most important factors in predicting support for stricter emission limits.


2017 ◽  
pp. 1196-1215 ◽  
Author(s):  
Mary Schmeida ◽  
Ramona Sue McNeal

The Obama Administration Climate Action Plan is enforcing goals to reduce greenhouse gas emissions below 2005 levels by 2020, regulating both stationary and mobile sources of pollution. As energy-related carbon dioxide emissions account for the majority of greenhouse gas emissions, the plan proposed carbon pollution standards for both new and existing plants. Impacts related to upgraded regulations have been projected as both favorable and not, with public and political opinions showing support among some groups and among other interests a concern. The purpose of this chapter is to analyze factors predicting which groups are supportive and non-supportive on setting stricter carbon dioxide emission limits on coal-fired electricity generating power plants. This topic is explored using multivariate regression analysis and individual level data. Findings suggest that comprehension of the policy area and individual financial situation are the most important factors in predicting support for stricter emission limits.


2018 ◽  
Vol 34 (3) ◽  
pp. 107
Author(s):  
Linarsih Makmun ◽  
Sarto Sarto

Purpose: The purpose of this study was to know, calculate and evaluate the concentration of methane gas and carbon dioxide produced in each wastewater treatment plant (WWTP) pond.Method: This research was a qualitative research, using case study design and explanatory approach. The object of this research was the emission of methane gas and carbon dioxide emitted from 12 WWTP ponds.Results: The highest COD and BOD decrement occurred in pond 4 of 39% COD and 61.2% BOD. The highest total methane gas emission was 1.49 x 109 kg hours-1 (1.49 x 106 tons hour-1) occurring in the morning, while the highest total carbon dioxide emission was 2.59 x 109 kg per hour (2.59 x 106 ton hour-1). Conclusion: The concentrations of methane and carbon dioxide gas produced by each WWTP pool varied greatly depending on temperature, residence time and the amount of mud. Methane gas emissions and carbon dioxide emissions occurred in each WWTP pool with the highest methane gas emission value occurring in pond 3 in the afternoon at 356,64 x 106 mg m-2minute-1 and the highest carbon dioxide emissions occur in pond 3 in the afternoon at 402.145 x 106 mg m-2minute-1. The decrease of COD value in whole anaerobic pool was 52,1% and the decrease of COD value in aerobic pool was 27,2%.


2018 ◽  
Vol 29 (2) ◽  
pp. 9-13
Author(s):  
Zdzisław Chłopek ◽  
Anna Olecka ◽  
Krystian Szczepański

Abstract The article presents the results of the inventory of greenhouse gas emissions from motor vehicles in Poland in 2015. The inventory was developed in accordance with the applicable guidelines for the annual greenhouse gas emission inventory (Decision 24/CP.19 of the Conference of the Parties to the United Nations Framework Convention on Climate Change) by the National Centre for Emissions Management and Balancing (KOBiZE) at the Institute of Environmental Protection – the National Research Institute. The national annual gas emissions from road transport are presented, including: carbon dioxide, methane and nitrous oxide along with emissions of the above gases converted into carbon dioxide equivalents. Carbon dioxide makes up the largest share in carbon dioxide emissions. This is particularly evident in the case of road transport – the emission of gases other than carbon dioxide (methane and nitrous oxide) is several orders of magnitude lower than the emission of carbon dioxide. Carbon dioxide emissions from road transport account currently for approximately 14% of the total carbon dioxide emission in Poland.


2002 ◽  
Vol 13 (6) ◽  
pp. 833-850
Author(s):  
Caleb Stewart ◽  
Mir-Akbar Hessami

This paper presents information related to greenhouse gas emissions due to the power consumption of the following household appliances: refrigerators, clothes washers, clothes dryers, freezers, and dishwashers; a possible extension to this analysis would include heaters and air-conditioners. Actual energy consumption data for the period 1993 to 1999 were used to estimate the total carbon dioxide emissions for 1994 to 2009 incremented at 5 years; these data can also be used to estimate the energy consumption of these appliances for 2008–2012 with reference to 1990 for reasons of comparison under the Kyoto Protocol. The total carbon dioxide equivalent emissions for the above household appliances show a peak of 29.6 mega-tonnes CO2 around 1999 with a decreasing trend post 1999 to 27.4 mega-tonnes CO2 in 2009. Details of the analysis for selected appliances show that refrigerators account for over half of total emissions, decreasing from 60.1% in 1994 to 51.6% in 2009. The aggregate trend activity was found to highly depend on the trend activity for emissions for refrigerators. The trend activity for freezers, clothes dryers and clothes washers is increasing for consecutive years from 1994 to 2009 defying the trend exhibited by refrigerators and dishwashers. The reason for this discrepancy is the relatively higher decreases in kWh/annum for refrigerators and dishwashers in contrast to other appliances. The energy consumption curves for each appliance take this differential into account. The energy consumption curve for refrigerators predicts a much faster decrease in kWh/annum than for other appliances thus causing the downward trend post 1999.


2021 ◽  
Vol 03 (02) ◽  
pp. 1-1
Author(s):  
Sampo Mäkikouri ◽  
◽  
Sirje Vares ◽  
Kirsi Korpijärvi ◽  
Nikolaos Papakonstantinou ◽  
...  

Climate change has been identified as one of the biggest issues plaguing human life at present. Hence, immense attention is being paid to developing methods that can potentially reduce carbon dioxide emission. With the help of carbon-negative concrete, manufactured from alternative binders and cured with waste carbon dioxide, a major part of the manufacturing industries that emit carbon dioxide can be potentially turned into a carbon sink. In this study, the waste material streams in Finland, suitable for disposing carbon-dioxide-cured concrete, were mapped. Mine tailings, blast furnace and steel slags, recycled concrete, biomass, coal and municipal waste incineration ashes, green liquor dregs, and foundry sands were studied. It was found that there were sufficient amounts of potential secondary raw materials (about 27 Mt/a) for the preparation of Finnish cement and the production of concrete (requirement: approximately 1.4 Mt/a and 11.2 Mt/a, respectively). The total carbon dioxide uptake potential was estimated to be approximately 1.9 Mt/a (vs. emissions from the cement industry in Finland, 0.84 Mt/a). In addition, the carbon footprints of the conventionally manufactured concrete block were compared with the carbon footprint produced by a modeled carbon-dioxide-cured blast furnace slag block. If such novel concrete were used to produce all the concrete-based substances, it would bring down the emission of carbon dioxide from 1.9% to negative 1.3% in Finland.


2016 ◽  
Vol 61 (3) ◽  
pp. 587-600
Author(s):  
Paweł Wrona ◽  
Józef Sułkowski ◽  
Zenon Różański ◽  
Grzegorz Pach

Abstract Greenhouse gas emissions are a common problem noticed in every mining area just after mine closures. However, there could be a significant local gas hazard for people with continuous (but variable) emission of these gases into the atmosphere. In the Upper Silesia area, there are 24 shafts left for water pumping purposes and gases can flow through them hydraulically. One of them – Gliwice II shaft – was selected for inspection. Carbon dioxide emission with no methane was detected here. Changes in emission and concentration of carbon dioxide around the shaft was the aim of research carried out. It was stated that a selected shaft can create two kinds of gas problems. The first relates to CO2 emission into the atmosphere. Possible emission of that gas during one minute was estimated at 5,11 kg CO2/min. The second problem refers to the local hazard at the surface. The emission was detected within a radius of 8m from the emission point at the level 1m above the ground. These kinds of matters should be subject to regular gas monitoring and reporting procedures.


2007 ◽  
Vol 4 (6) ◽  
pp. 985-1003 ◽  
Author(s):  
M. K. van der Molen ◽  
J. van Huissteden ◽  
F. J. W. Parmentier ◽  
A. M. R. Petrescu ◽  
A. J. Dolman ◽  
...  

Abstract. Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, Reco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=−92 g C m−2 yr−1, which is composed of an Reco=+141 g C m−2 yr−1 and GPP=−232 g C m−2 yr−1. This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (−14°C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (Rg<200 W m−2), whereas Reco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO2e m−2 yr−1, so that the greenhouse gas balance was −64 g C-CO2e m−2 yr−1. Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.


2013 ◽  
Vol 734-737 ◽  
pp. 1910-1914 ◽  
Author(s):  
Qiao Zhi Zhao ◽  
Qing You Yan

China is developing at relatively high speed, not only the regional development speed should be focused upon, but also the environmental impact of economic growth should be paid attention to, especially the level change of carbon dioxide emission. To some degree, quantity of carbon dioxide emission has become one of the most important indexes for measuring quality of a nations economic growth. Thus, this thesis is trying to analyze the driving relations between economic growth and carbon dioxide. Upon STIRPAT model, ridge regression method and elasticity theory are applied to analyze the influencing factors of carbon dioxide quantity such as the population quantity, Chinas urbanization process, per capita GDP, energy density and the percentage of the secondary industry. Correspondingly, based on the different influencing variables to carbon dioxide emission quantity, needy measures are brought out to control and decrease emissions. Feasible suggestions are trying to improve Chinas economic development quality.


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