scholarly journals A Study on Global Warming- A Threat To Biodiversity and Universal Health

Author(s):  
Krishna Kulin Trivedi

Global Warming is a very serious issue. the term “Global Warming” means increase in global temperature mainly due to increase in greenhouse gases concentration due to the burning of fossil fuels in the atmosphere and is long term warming of the planet. The whole world fights against it. The global warming changes the climate and is caused by the human action. Global warming is a very major problem and with it the flood, droughts, melting of ice, storms and change in climate is likely to happen. Steps have to be taken to solve the global problem global warming for the better universal health and better environment for the whole world. Due to global warming there will be environmental disruption and change in climate which will be an irreversible situation. The global warming is caused by the human and their activities and thus it is the human who is the sufferer of climate change, thus we cant stop global warming but we can solve it by reducing and slowing down the greenhouse gas emissions and burning of fossil fuels for a better environment for ourselves and a sustainable environment for the future generations.

Author(s):  
Gennady V. Menzhulin ◽  
Sergey P. Savvateyev

The climate of a region is a representation of long-term weather conditions that prevail there. Over the millions of years of the existence of the atmosphere on the earth, the climate has changed all the time; ice ages have come and gone, and this has been the result of natural causes. Recently (on geological time scales) the human population has expanded—from half a billion in 1600, to 1 billion in 1800, to almost 3 billion in 1940, and it now stands at about 6 billion. The climate may well now be influenced not only as before by natural events but also by human activities. For example, we are producing vast amounts of carbon dioxide by burning fossil fuels, and this is causing the temperature of the earth to rise significantly. If we argue that we should control our activities to preserve this planet as a habitable environment for future generations, we need to have some scientific knowledge of the effects of our present activities on climate. In recent years the evidence has been accumulating that on the time scale of decades there is global warming (i.e., the global annual mean surface temperature is increasing). There is also evidence accumulating that part of this increase is a consequence of human activities. The evidence is largely statistical. Within this trend there are bound to be temporal fluctuations and spatial variations. Moreover, in addition to the increase in temperature, it is reasonable to assume that there is, overall, an increase in evaporation of water from the surface of the earth and that there will be a consequent increase in precipitation. But within this overall scenario there are bound to be local variations; some areas may experience more precipitation, but some areas may experience less precipitation. The effect of climate change on the proneness to drought is therefore not uniform but can be expected to vary from place to place. Therefore, whether one is concerned with considering the relation between climate and proneness to drought from the historical evidence or whether one is trying to use models to predict the effect of future climatic conditions, it is necessary to consider the local spatial variations.


2011 ◽  
Vol 4 (2) ◽  
pp. 307
Author(s):  
Virginia Mirtes De Alcântara Silva ◽  
Maria da Conceição Marcelino Patrício ◽  
Raimundo Mainar de Medeiros ◽  
Alexandra Lima Tavares

Este trabalho inicia-se em um breve relato sobre as mais diversas opiniões acerca das mudanças climáticas, enfocando os conceitos de diversos pesquisadores acerca da temática, tão controversa nos meios científicos quanto a nível internacional. Várias opiniões divergem sobre o que realmente originam as mudanças climáticas, a primeira seria que as mudanças climáticas decorrem de ações antropogênicas, provindos do uso de combustíveis fósseis e o crescimento da agricultura alterando na atmosfera um aumento de CO2, que conseqüentemente induziriam a elevação da temperatura, ou seja, ao aquecimento global, entretanto, existem argumentos que se contrapõem ao aquecimento global de longo prazo e defendem um resfriamento global gradativo, baseando-se que o clima sofre influência de forças como o sol e os seus ciclos e os oceanos que cobrem 71% da superfície e que são os grandes reservatórios de calor, e que as mudanças climáticas são de ordem natural, pois a interferência humana é insignificante e apenas traz mudanças a nível local. Essas divergências científicas necessitam de comprovações, pois precisamos entender as conseqüências reais desse processo. Se realmente estamos caminhando para um aquecimento ou resfriamento e se as mudanças climáticas são de ordem natural ou antropogênicas.Palavras- chave: Mudanças climáticas, Aquecimento global, Resfriamento global, Divergências científicas.  The paradox of Climate Change in Brazil: Heating or Cooling?  ABSTRACTThis work begins in a brief report on the diverse views on climate change, focusing on the concepts of various researchers on the theme, so controversial in scientific circles as internationally. Various opinions differ on what really causes climate change, the first climate change that would result from anthropogenic activities, stemming from the use of fossil fuels growth in agriculture and the changing atmosphere in a CO2 increase, which consequently leads to a rise in temperature, or global warming, however, there are arguments to oppose the long-term global warming and advocate a gradual global cooling, based on the climate is influenced by forces like the sun and its cycles and the oceans that cover 71 % of the surface and are the great reservoirs of heat, and that climate change is a natural one, because human interference is negligible and only brings changes at the local. These differences need scientific proof, because we need to understand the real consequences of this process. If we are really heading for a heating or cooling and climate change are of a natural or anthropogenic. Key words: Climate change, Global warming, Global cooling, Scientific differences.


2021 ◽  
pp. 108602662110316
Author(s):  
Tiziana Russo-Spena ◽  
Nadia Di Paola ◽  
Aidan O’Driscoll

An effective climate change action involves the critical role that companies must play in assuring the long-term human and social well-being of future generations. In our study, we offer a more holistic, inclusive, both–and approach to the challenge of environmental innovation (EI) that uses a novel methodology to identify relevant configurations for firms engaging in a superior EI strategy. A conceptual framework is proposed that identifies six sets of driving characteristics of EI and two sets of beneficial outcomes, all inherently tensional. Our analysis utilizes a complementary rather than an oppositional point of view. A data set of 65 companies in the ICT value chain is analyzed via fuzzy-set comparative analysis (fsQCA) and a post-QCA procedure. The results reveal that achieving a superior EI strategy is possible in several scenarios. Specifically, after close examination, two main configuration groups emerge, referred to as technological environmental innovators and organizational environmental innovators.


2016 ◽  
Vol 4 (2) ◽  
pp. 1 ◽  
Author(s):  
Jan Erik Lane

The implementation process of the global accord on climate change has to start now in order to be implementable. The decentralized process if implementation should take the lessons from the theory of policy implementation into account (Pressman & Wildavsky, 1984; Wildavsky, 1987). The dependency upon various forms of coal (wood, stone) and fossil fuels is so large in the Third World that only massive financial assistance from the First World can mean a difference for the COP21 objectives. And many advanced countries (except Uruguay) also need to make great changes to comply with COP21.


2017 ◽  
Author(s):  
Homayoun Fathollahzadeh ◽  
Fabio Kaczala ◽  
Amit Bhatnagar ◽  
William Hogland

The main dilemma of contaminated sediments has been the proper management with reduced environmental footprints. Furthermore, by considering the fact that global warming and climate change may complicate the choice of management options, finding appropriate solutions become extremely critical. In the present work, mining of contaminated sediments to recover valuable constituents such as metals and nutrients is proposed as sustainable strategy, both through enhancing resilience of ecosystem and remediation. Contaminated sediments in the Oskarshamn harbor, southeast of Sweden were collected and analyzed through a modified sequential extraction in order to evaluate the feasibility of metals recovery. The results have shown that among different metals present in the sediments, Cu and Pb can be initially considered as economically feasible to recover. The shifting in the concept of dredging and further remediation of contaminated sediments towards sediment mining and recover of valuable metals can be considered in the near future as a sustainable strategy to tackle contaminated harbor/ports areas. However, it must be highlighted that short and long-term environmental impacts related to such activities should be addressed.


2020 ◽  
Vol 16 (1) ◽  
pp. 154-161
Author(s):  
Михаил Елизаров

Over the decades, attempts were made to elaborate a legally binding single document on ocean resource management that would be acceptable to all countries. The culmination of this process was the adoption of the 1982 UN Convention on the law of sea. Since its entry into force, the Convention has become an important legal basis for ensuring the rational use of the world's ocean resources and their long-term conservation on behalf of future generations. At the same time, there remains the very acute challenge associated with finding a balance between reaching a global consensus on issues that are common to all and identifying topics that can be addressed and resolved by leaders at the global level. As humankind continues to postpone the adoption of urgent measures to prevent the effects of climate change, the environment deteriorates, while measures to mitigate these effects get more expensive and complex.


2008 ◽  
Vol 12 (1) ◽  
pp. 239-255 ◽  
Author(s):  
E. McBean ◽  
H. Motiee

Abstract. In the threshold of the appearance of global warming from theory to reality, extensive research has focused on predicting the impact of potential climate change on water resources using results from Global Circulation Models (GCMs). This research carries this further by statistical analyses of long term meteorological and hydrological data. Seventy years of historical trends in precipitation, temperature, and streamflows in the Great Lakes of North America are developed using long term regression analyses and Mann-Kendall statistics. The results generated by the two statistical procedures are in agreement and demonstrate that many of these variables are experiencing statistically significant increases over a seven-decade period. The trend lines of streamflows in the three rivers of St. Clair, Niagara and St. Lawrence, and precipitation levels over four of the five Great Lakes, show statistically significant increases in flows and precipitation. Further, precipitation rates as predicted using fitted regression lines are compared with scenarios from GCMs and demonstrate similar forecast predictions for Lake Superior. Trend projections from historical data are higher than GCM predictions for Lakes Michigan/Huron. Significant variability in predictions, as developed from alternative GCMs, is noted. Given the general agreement as derived from very different procedures, predictions extrapolated from historical trends and from GCMs, there is evidence that hydrologic changes particularly for the precipitation in the Great Lakes Basin may be demonstrating influences arising from global warming and climate change.


2009 ◽  
Vol 26 (2) ◽  
pp. 231-271
Author(s):  
John David Lewis

Claims that a man-made global warming catastrophe is imminent have two major aspects: the scientific support offered for the claims, and the political proposals brought forth in response to the claims. The central questions are whether non-scientists should accept the claims themselves as true, and whether they should support the political proposals attached to them. Predictions of a coming disaster are shown to be a-historical in both the long term and the short term, to involve shifting predictions that are contrary to evidence, and to be opposed by many scientists. The political proposals to alleviate this alleged problem—especially plans by the U.S. Environmental Protection Agency—are shown to offer no alternative to fossil fuels, and to portend a major economic decline and permanent losses of liberty. The anthropogenic global warming claims are largely motivated not by science, but by a desire for socialist intervention on a national and a global scale. Neither the claims to an impending climate catastrophe nor the political proposals attached to those claims should be accepted.


2020 ◽  
Author(s):  
Edward A. Byers ◽  
Keywan Riahi ◽  
Elmar Kriegler ◽  
Volker Krey ◽  
Roberto Schaeffer ◽  
...  

<p>The assessment of long-term greenhouse gas emissions scenarios and societal transformation pathways is a key component of the IPCC Working Group 3 (WG3) on the Mitigation of Climate Change. A large scientific community, typically using integrated assessment models and econometric frameworks, supports this assessment in understanding both near-term actions and long-term policy responses and goals related to mitigating global warming. WG3 must systematically assess hundreds of scenarios from the literature to gain an in-depth understanding of long-term emissions pathways, across all sectors, leading to various levels of global warming. Systematic assessment and understanding the climate outcomes of each emissions scenario, requires coordinated processes which have developed over consecutive IPCC assessments. Here, we give an overview of the processes involved in the systematic assessment of long-term mitigation pathways as used in recent IPCC Assessments<sup>1</sup> and being further developed for the IPCC 6<sup>th</sup> Assessment Report (AR6). The presentation will explain how modelling teams can submit scenarios to AR6 and invite feedback to the process.</p><p>Following discussions amongst IPCC Lead Authors to define the scope of scenarios desired and variables requested, a call for scenarios to support AR6 was launched in September 2019. Modelling teams have registered and submitted scenarios through Autumn 2019 using a new and secure online submission portal, from which authorised Lead Authors can interrogate the scenarios interactively.</p><p>This analysis is underpinned by the open-source software pyam, a Python package specifically designed for analysis and visualisation of integrated assessment scenarios<sup>2</sup>. Submitted scenarios are automatically checked for errors and processed using a new climate assessment pipeline. The climate assessment involves infilling and harmonization<sup>3</sup> of emissions data, then the scenarios are processed through Simple Climate Models, using the OpenSCM framework<sup>4</sup>, to give probabilistic climate implications for each scenario – atmospheric concentrations, radiative forcing and global mean temperature. The climate assessment accounts for updated climate sensitivity estimates from CMIP6 and WG1,s scenarios are categorized according to climate outcomes and distinguish between timing and levels of net-negative emissions, emissions peak and temperature overshoot. Scenarios are also categorized by other indicators, for consistent use across WG3 chapters, such as: population and GDP; Primary and Final energy use; and shares of renewables, bioenergy and fossil fuels.</p><p>The automated framework also facilitates bolt-on analyses, such as estimating the population impacted by biophysical climate impacts<sup>5</sup>, and estimates of avoided damages with the social cost of carbon<sup>6</sup>.</p><p>Upon publication of the WG3 AR6 report, all scenario data used in the WG3 Assessment will be publicly available on a Scenario Explorer, an online tool for interrogating and visualizing the data that supports the report. In combination, this framework brings new levels of consistency, transparency and reproducibility to the assessment of scenarios in IPCC WG3 and will be a key resource for the climate community in understanding the main drivers of different transformation pathways.</p><ol><li>Huppmman et al 2018, Nature Climate Change</li> <li>Gidden and Huppmann, 2019, Journal of Open Source Software</li> <li>Gidden et al 2018 Environ. Model. Softw</li> <li>Nicholls et al 2020</li> <li>Byers et al 2018 Environmental Research Letters</li> <li>Ricke et al 2018 Nature Climate Change</li> </ol>


1985 ◽  
Vol 28 (2) ◽  
pp. 60-66
Author(s):  
John Lemons

The combustion of fossil fuels increases atmospheric levels of carbon dioxide. This may cause a long-term warming of the atmosphere. Solutions to the carbon dioxide problem are particularly difficult because adverse effects will be felt by future generations, but remedial action and sacrifices must be made by present generations. Decisions regarding the problem which affect both the immediate and long-range future must be made deliberately or by default in perhaps only 15-20 years, before we are reasonably confident with our knowledge of the problem and before we know whether it will, in fact, occur. Much of the uncertainty involves projections of future energy use, and scientific knowledge of the carbon cycle and the environment.


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