نتایج جستجو برای: ch4 emission factor

تعداد نتایج: 1019227  

2003
Thomas Martinsen

The purpose of this paper is to support the development of so-called good practice guidelines for the estimation of methane (CH4) emissions from solid waste (SW) disposal for national greenhouse gas inventories. The paper reviews and discusses the emission estimation methods given in the IPCC 1996 Revised Guidelines (IPCC Guidelines), and uncertainty and quality management issues related to the...

2016
Reza Rafiee

....................................................................................................................................... II Acknowledgements .......................................................................................................................... VII 1 CHAPTER 1: Introduction............................................................................................

2003
Jung-Jeng Su Bee-Yang Liu Yuan-Chie Chang

Greenhouse gas (GHG) emission can become a limiting factor in livestock farming development. Animal manure management systems in Taiwan differ from the model of the Intergovernmental Panel on Climate Change (IPCC) to represent the Far East and Asian region. This study was undertaken to establish GHG production data from anaerobic livestock wastewater treatment processes in Taiwan, and to clarif...

2016
Katerina Machacova Jaana Bäck Anni Vanhatalo Elisa Halmeenmäki Pasi Kolari Ivan Mammarella Jukka Pumpanen Manuel Acosta Otmar Urban Mari Pihlatie

Boreal forests comprise 73% of the world's coniferous forests. Based on forest floor measurements, they have been considered a significant natural sink of methane (CH4) and a natural source of nitrous oxide (N2O), both of which are important greenhouse gases. However, the role of trees, especially conifers, in ecosystem N2O and CH4 exchange is only poorly understood. We show for the first time ...

Journal: :Journal of animal science 1999
L A Harper O T Denmead J R Freney F M Byers

Methane (CH4) emissions from animals represent a significant contribution to anthropogenically produced radiatively active trace gases. Global and national CH4 budgets currently use predictive models based on emission data from laboratory experiments to estimate the magnitude of the animal source. This paper presents a method for measuring CH4 from animals under undisturbed field conditions and...

2016
Guangbin Zhang Haiyang Yu Xianfang Fan Jing Ma Hua Xu

Carbon isotopic fractionations in the processes of CH4 emission from paddy field remain poorly understood. The δ(13)C-values of CH4 in association with production, oxidation and transport of CH4 in different pools of a paddy field were determined, and the stable carbon isotope fractionations were calibrated to assess relative contribution of acetate to CH4 production (fac) and fraction of CH4 o...

2017
Päivi RINTA David BASTVIKEN Jos SCHILDER Maarten VAN HARDENBROEK Tabea STÖTTER Oliver HEIRI

Quantifying methane (CH4) emissions from lakes is important for regional and global greenhouse gas emission inventories. However, regional and global estimates suffer from methodologically inconsistent data sets and from the situation that systematic flux measurements are presently available only for some regions in the world. In particular, many temperate regions dominated by agricultural land...

2012
Eun Sook Ji Kyu-Hyun Park

This study was conducted to evaluate methane (CH4) and nitrous oxide (N2O) emissions from livestock agriculture in 16 local administrative districts of Korea from 1990 to 2030. National Inventory Report used 3 yr averaged livestock population but this study used 1 yr livestock population to find yearly emission fluctuations. Extrapolation of the livestock population from 1990 to 2009 was used t...

Journal: :environmental health engineering and management 0
mehdi ahmadi environmental technologies research center, department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran maedeh rozkhosh science and research branch, islamic azad university of khozestan, faculty of environment, ahvaz, iran nemat-allah jaafarzadeh haghighifard environmental technologies research center, department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran

background: iran is located in the seventh rank in terms of co2 emissions resulting from the fuel combustion in the world. gas compressor booster stations, due to the several sources of contaminants, are causing the release of large amounts of co2 and ch4, which will cause climate change therefore, estimating the emissions of the gases from oil and gas, different processing units are necessary....

Journal: :Elementa 2022

Site-specific methane (CH4) and ethane (C2H6) emission rates from the onshore oil gas (O&G) sector in Romania were quantified, using mobile tracer dispersion method. As part of coordinated Romanian Methane Emission Oil & Gas measurement campaign, this study supported investigation CH4 emissions O&G around Bucharest. measured at 200 sites highly skewed with a heavy tail described by ...

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