scholarly journals Análisis y comparación de las metodologías de calculo de gases de efecto invernadero en el contexto urbano.

Author(s):  
Carlos Alfredo Rivas Cobo ◽  
Emilio José Jarre Castro ◽  
Christian Antequera Zamudio

Analysis and comparison of greenhouse gas calculation methodologies in the urban context Últimamente los esfuerzos para disminuir el efecto invernadero antrópico se están redoblando por parte de las administraciones, el calentamiento global es un hecho demostrado por la comunidad científica. Los gobiernos nacionales se han comprometido a disminuir sus emisiones. A esta lucha por parte de los gobiernos nacionales se han unido los gobiernos municipales, ya que las ciudades serán una de las principales damnificadas por el cambio climático y uno de los máximos focos de emisión. Se analizan las principales metodologías de cálculo y sus diferencias para calcular los gases de efecto invernadero (GEI) producidos en el contexto urbano Palabras clave: Cambio Climático; Calculo Urbano; Efecto invernadero. Abstract Lately, efforts to reduce the anthropogenic greenhouse effect are being redoubled by administrations, global warming is a fact demonstrated by the scientific community. National governments have committed to reduce their emissions. The municipal governments have joined this fight that national governments are part of, since the cities will be one of the main victims of climate change and one of the main sources of emissions. The main calculation methodologies and their differences to calculate the greenhouse gases (GHG) produced in the urban context are analyzed. Keywords: Climate Change; Greenhouse effect; Urban Calculus.

2005 ◽  
Vol 31 ◽  
pp. 279-309 ◽  
Author(s):  
Axel Gosseries

Evidence provided by the scientific community strongly suggests that limits should be placed on greenhouse gas (GHG) emissions. This means that states, firms, and individuals will have to face potentially serious burdens if they are to implement these limits. Which principles of justice should guide a global regime aimed at reducing greenhouse gas (GHG) emissions originating from human activities, and most notably from CO2 emissions? This is both a crucial and difficult question. Admittedly, perhaps this question is too ambitious, given the uncertainties and complexities characterizing the issue of climate change. Yet, rather than listing them all at this stage, let us address the question in a straightforward manner, introducing some of these complexities as the need arises.


2021 ◽  
pp. 1-10
Author(s):  
Eelco J. Rohling

This chapter outlines the challenge facing us. The Paris Agreement sets a target maximum of 2°C global warming and a preferred limit of 1.5°C. Yet, the subsequent combined national pledges for emission reduction suffice only for limiting warming to roughly 3°C. And because most nations are falling considerably short of meeting their pledges, even greater warming may become locked in. Something more drastic and wide-ranging is needed: a multi-pronged strategy. These different prongs to the climate-change solution are introduced in this chapter and explored one by one in the following chapters. First is rapid, massive reduction of greenhouse gas emissions. Second is implementation of ways to remove greenhouse gases from the atmosphere. Third may be increasing the reflectivity of Earth to incoming sunlight, to cool certain places down more rapidly. In addition, we need to protect ourselves from climate-change impacts that have already become inevitable.


1998 ◽  
Vol 47 (2) ◽  
pp. 446-461 ◽  
Author(s):  
Colin Warbrick ◽  
Dominic McGoldrick ◽  
Peter G. G. Davies

The Third Conference of the Parties to the United Nations Framework Convention on Climate Change (Climate Change Convention) was held from 1 to 11 December 1997 at Kyoto, Japan. Significantly the States Parties to the Convention adopted a protocol (Kyoto Protocol) on 11 December 1997 under which industrialised countries have agreed to reduce their collective emissions of six greenhouse gases by at least 5 per cent by 2008–2012. Ambassador Raul Estrada-Oyuela, who had chaired the Committee of the Whole established by the Conference to facilitate the negotiation of a Protocol text, expressed the view that: “This agreement will have a real impact on the problem of greenhouse gas emissions. Today should be remembered as the Day of the Atmosphere.” This note seeks to outline in brief the science of climate change, and international activity to combat global warming prior to the Kyoto conference. It then attempts to analyse the terms of the Kyoto Protocol and to draw some conclusions on its significance.


2021 ◽  
Vol 48 (5) ◽  
pp. 328-342
Author(s):  
M. A Adeyemi ◽  
E. O. Akinfala

Greenhouse gases are becoming devastating on agriculture and environment because of its effect on climate and global warming. The aim of this review is to provide update on livestock greenhouse gases emission and rekindle available mitigation strategies. Recently, global warming and climate change have become one of the most discussed issues globally because of their negative effect on ecosystem worldwide. The livestock sub-sector as a major source of greenhouse gas emission, has been identified to contribute substantially to the recent rise in global warming and climate change. Livestock, most importantly ruminants plays a major role in the emission of methane, one of the potent greenhouse gases. This methane is usually released through enteric fermentation in animals and manure management system, though the latter account for smaller quantity. Estimate of methane emission inventory from livestock in Nigeria showed that 96.15 % of methane produced by livestock was by ruminants with cattle alone accounting for 74.06 %. With this background, strategies to date for reducing methane emissions should centre on ruminant. Efforts to reduce methane emissions from enteric fermentation generally focus on options for improving production efficiency. This has been demonstrated with intensive animal production systems. However, in Nigeria, this system has been successful only for non-ruminants while the extensive and semi extensive systems are being practiced for ruminants. In view of this, options for reducing emissions must be selected to be consistent with country-specific circumstances. Those circumstances should include animal management practices (including cultural traditions), nutrition and economic development priorities.     Les gaz à effet de serre deviennent dévastateurs de l'agriculture et de l'environnement en raison de son effet sur le climat et le réchauffement de la planète. L'objectif de cet examen est de fournir une mise à jour sur les stratégies d'atténuation disponibles des gaz à effet de serre de bétail. Récemment, le réchauffement climatique et le changement climatique sont devenus l'une des questions les plus discutées à l'échelle mondiale en raison de leur effet négatif sur l'écosystème mondial. Le sous-secteur de l'élevage en tant que source majeure d'émissions de gaz à effet de serre, a été identifié pour contribuer de manière substantielle à la hausse récente du réchauffement de la planète et du changement climatique. Le bétail, plus important encore, les ruminants jouent un rôle majeur dans l'émission de méthane, l'un des gaz à effet de serre puissants. Ce méthane est généralement libéré par la fermentation entérique chez les animaux et le système de gestion de fumier, bien que ces derniers représentent une plus petite quantité. L'estimation des stocks d'émissions de méthane provenant du bétail au Nigéria a montré que 96,15% de méthane produites par le bétail étaient par des ruminants avec des bovins à eux-mêmes représentant 74,06%. Avec ce contexte, des stratégies à ce jour pour réduire les émissions de méthane doivent être centrées sur le ruminant. Les efforts visant à réduire les émissions de méthane de la fermentation entérique se concentrent généralement sur les options d'amélioration de l'efficacité de la production. Cela a été démontré avec des systèmes de production d'animaux intensifs. Cependant, au Nigéria, ce système n'a abouti que pour les non-ruminants tandis que les systèmes étendus et semi-étendus sont pratiqués pour les ruminants. Compte tenu de cela, les options de réduction des émissions doivent être sélectionnées pour être cohérentes avec des circonstances spécifiques à chaque pays. Ces circonstances devraient inclure des pratiques de gestion des animaux (y compris des traditions culturelles), des priorités de nutrition et de développement économique


2011 ◽  
Vol 1 (2) ◽  
pp. 46 ◽  
Author(s):  
Kofo A Aderogba

Abstract The enhancement of the greenhouse effect in driving increases in temperature and many other changes associated with climate have become great concern to research. The objective of this paper is to estimate the amount of greenhouse gases in the atmosphere in Lagos Metropolis. Literatures on road and air travels were read; and also journal articles on pollution and greenhouse gases, global warming and climate change. Newspaper cuttings, magazines, and electronic media sources of data and information were used. Trends in the growth and development of railway locomotives, marine activities, vehicular movements and air travels in the metropolis were studied and correlated with the estimated greenhouse gases emitted. There is positive correlation. Vehicular movements and air travels have increased by over 50% in the last twenty years. Greenhouse gases are increasing by the day. There must be deliberate checks on gas emission from automobiles, plants and machineries and in the aviation industry.  The world is not at rest to arrest the effects of climate change and global warming.  Nigeria and Nigerians and particularly Lagosian, the government and research institutions should be parts of the efforts.   Key words: Greenhouse Gas, Emissions, Predicaments, Economic Value, Lagos Metropolis.


2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Romdhane Ben Slama

The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately,  to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122 ° C, or 12.2 ° C / century.


2021 ◽  
pp. 1-13
Author(s):  
Kehan Li

Climate change is of great importance in modern times and global warming is considered as a significant part of climate change. It is proved that human’s emissions such as greenhouse gases are one of the main sources of global warming (IPCC, 2018). Apart from greenhouse gases, there is another kind of matter being released in quantity via emissions from industries and transportations and playing an important role in global warming, which is aerosol. However, atmospheric aerosols have the net effect of cooling towards global warming. In this paper, climate change with respect to global warming is briefly introduced and the role of aerosols in the atmosphere is emphasized. Besides, properties of aerosols including dynamics and thermodynamics of aerosols as well as interactions with solar radiation are concluded. In the end, environmental policies and solutions are discussed. Keywords: Climate change, Global warming, Atmospheric aerosols, Particulate matter, Radiation, Environmental policy.


2021 ◽  
pp. 96-121
Author(s):  
Raymond T. Pierrehumbert

‘Planetary climate and habitability’ studies planetary climate, particularly the way an atmosphere affects temperature and a planet's habitability. The entire temperature profile, from the planet's centre to the tenuous outer reaches of its atmosphere (if it has one), is of importance. Real atmospheres are never completely transparent to the infrared radiation which seeks to escape to space. Gases which are good absorbers of infrared radiation act as planetary insulation. This is the greenhouse effect, and gases that are good infrared absorbers are called greenhouse gases; carbon dioxide is an important greenhouse gas for Earth.


Author(s):  
Mark Maslin

‘Evidence for climate change’ considers both past and recent climate change through changes in temperature, precipitation, and relative global sea level to show that significant changes in climate have been recorded. These include a 0.85°Celsius (C) increase in average global temperatures over the last 150 years, sea-level rise of over 20 cm, significant shifts in the seasonality and intensities of precipitation, changing weather patterns, and significant retreat of Arctic sea ice and nearly all continental glaciers. The IPCC 2013 report states that the evidence for global warming is unequivocal and that there is very high confidence that this warming is due to human emissions of greenhouse gases.


AJIL Unbound ◽  
2018 ◽  
Vol 112 ◽  
pp. 279-284 ◽  
Author(s):  
Daniel C. Esty ◽  
Dena P. Adler

After more than two decades of inadequate international efforts to address climate change resulting from rising greenhouse gas emissions, the 2015 Paris Climate Change Agreement shifted gears. That agreement advances a “bottom-up” model of global cooperation that requires action commitments from all national governments and acknowledges the important role that cities, states, provinces, and businesses must play in delivering deep decarbonization. Given the limited control that presidents and prime ministers have over many of the policies and choices that determine their countries’ carbon footprints, the Paris Agreement missed an opportunity to formally recognize the climate change action commitments of mayors, governors, and premiers. These subnational officials often have authorities complementary to national governments, particularly in federal systems (including the United States, China, Canada, and Australia). They therefore possess significant independent capacities to reduce greenhouse gas emissions through their economic development strategies, building codes, zoning rules and practices, public transportation investments, and other policies. Likewise, the world community missed an opportunity to formally recognize the commitments of companies to successful implementation of the Paris Agreement and thereby to highlight the wide range of decisions that business leaders make that significantly affect greenhouse gas emissions.


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