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global warming

The gradual increase in the overall temperature of the earth's atmosphere due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.

global warming

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The Oxford Companion to the History of Modern Science

Reference type:
Subject Reference
Subject:
Science and technology, History of Science
Length:
10 words

... warming . See Climate Change and Global Warming ; Ozone Layer...

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A Dictionary of Construction, Surveying and Civil Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2020

... warming A gradual increase in the earth’s average temperature due to the release of carbon dioxide, CFCs, and other polluting gases. See also greenhouse effect...

Global Warming

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Kristine C. Harper

The Oxford Encyclopedia of the History of American Science, Medicine, and Technology

Reference type:
Subject Reference
Current Version:
2015

...and climate events. Schneider, Stephen H. Global Warming: Are We Entering the Greenhouse Century? San Francisco: Sierra Club Books, 1989. An informative, nontechnical book by the late climate scientist explaining the global warming controversy. Singer, S. Fred . Hot Talk, Cold Science: Global Warming’s Unfinished Debate . Oakland, Calif.: Independent Institute, 1997. A contrarian view of global warming by meteorologist Singer, a global warming skeptic. Weart, Spencer R. The Discovery of Global Warming . 2d ed. Cambridge, Mass.: Harvard University...

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
142 words

... warming Trend towards higher average temperatures on Earth's surface. During the last few million years, there have been several periods when surface temperatures have been significantly higher or lower than at present. During cold periods ( ice ages ), glaciers covered much of the land. The Earth is currently in the middle of a warm period (inter-glacial), which began c. 10,000 years ago. Since the 1960s, many scientists have called attention to signs that the Earth is becoming unnaturally warmer as the result of an increased greenhouse effect caused...

global warming

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Darcy April

The Oxford Companion to Beer

Reference type:
Subject Reference
Current Version:
2013

... (accessed November 10–29, 2010). “Global warming threatens brewery.” http://www.czech-netz.com/174/2009-0157/global-warming-threatens-brewery.html (accessed November 10–29, 2010). National Oceanic and Atmospheric Administration. http://www.ncdc.noaa.gov/oa/climate/globalwarming.html (accessed November 10–29, 2010). The New York Times “Times Topic” on global warming . http://topics.nytimes.com/top/news/science/topics/globalwarming/index.html?scp=1-spot&sq=global%20warming&st=cse# (accessed November 10–29, 2010). O’Brien, Chris ....

Global warming

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A Dictionary of Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2008

...warming is occurring at c .1.5  deg  °C per century and an increase of 1.4–5.8 deg°  C by 2100 . Warming is primarily confined to the troposphere and is balanced by a corresponding cooling of the stratosphere and mesosphere . Recent results indicate that this upper-atmospheric cooling is causing the altitude of the ionosphere to decrease. Although the amount of warming at the surface is subject to some debate, its effects are apparently visible in the melting of glaciers , and a general rise in sea level. Although modelling of global warming is...

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A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017
Subject:
Science and technology, Engineering and Technology, Environmental Science
Length:
162 words
Illustration(s):
1

...global warming The significant rise in the average global surface temperature that has occurred since pre-industrial times (~1750) and, in particular, over the last fifty years. The Intergovernmental Panel on Climate C hange (IPCC) has concluded that it is extremely likely that this has been caused predominantly by human emission of greenhouse gases . That this is the case can be seen by comparing the temperature changes expected from just natural causes and those from natural plus anthropogenic causes to the observed changes ( see figure). The United...

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The Oxford Companion to the Earth

Reference type:
Subject Reference
Current Version:
2003

... warmingGlobal warming’ is the term applied to increasing average global temperature, popularly associated with the enhanced greenhouse effect. Since the mid-1980s, the prospect of warming has become reality. Global temperature series, combining observations from land and sea surface, have shown that temperatures have risen by between 0.5 and 0.8 °C over the past 100 years, the warmest year being 1998 , followed by 1997 , 1995 , and 1999 . This warming has coincided with advances in computer modelling of the enhanced greenhouse effect. This is the...

Global Warming

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Oxford Encyclopedia of the Modern World

Reference type:
Subject Reference
Current Version:
2008
Subject:
History, Contemporary History (post 1945)
Length:
1,809 words

...weather events. International Efforts to Control Global Warming. In 1988 the United Nations responded to concerns about global warming by creating the Intergovernmental Panel on Climate Change ( IPCC ) to provide comprehensive assessments that provide reports on climate change and potential ways to mitigate the effects of climate change. The IPCC collects and assesses global warming facts to provide scientific evidence that constitutes a base for political action. IPCC publications warn that increasing global temperatures could threaten crops, melt glaciers,...

Global Warming

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Encyclopedia of Global Change

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Environmental Science, Social sciences, Environment
Length:
10,264 words
Illustration(s):
13

... Warming To explore the major environmental issue of global warming, this entry comprises two articles. The first article presents an overview of the increases in the concentration of greenhouse gases and their potential to bring about global warming; the second focuses on the index that qualitatively compares the warming effects of a given greenhouse gas relative to a reference . An Overview The concept of global warming combines the observed rise in global mean temperatures since the beginning of the twentieth century with the measurable enhancement of...

Global Warming

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Encyclopedia of Climate and Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2011
Subject:
Science and technology, Earth Sciences and Geography, Social sciences, Environment
Length:
3,199 words
Illustration(s):
1

... Warming The term global warming has become synonymous in the press with human-induced climate change. It is sometimes taken to mean increases in global average temperature. However, the main way humans affect climate is not through direct generation of heat such as by burning fossil fuels, but rather by changing the composition of the atmosphere and the greenhouse effect and thereby interfering with the natural flows of energy through the climate system. Accordingly, global warming really means “global heating” and the consequences are not only increases...

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A Dictionary of Economics (5 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Economics
Length:
170 words

...global warming An increase in the average temperature of the Earth’s near-surface air and oceans. Economic costs associated with climate change , as summarized by the United Nations Environment Programme, are related to the risks to farmers and consumers (many of whom are not insured), as well as insurers, reinsurers, and banks, of increasingly traumatic and costly weather events; among economic sectors that are likely to suffer are agriculture and transport. Less developed countries might be at a greater economic risk than the developed countries. There seems...

Global Warming

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The Oxford Companion to Global Change

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, Environmental Science, Social sciences, Environment
Length:
8,336 words
Illustration(s):
2

... Warming Global warming has become the dominant environmental issue of modern times, receiving an unprecedented level of attention from scientists, politicians, business organizations, the media and the general public. Anecdotal, documentary, and instrumental evidence supports the widely held perception that the twentieth century was a period in which global temperatures rose to unprecedented levels. Periods of warming earlier in the century had been recognized by climatologists, but the current major warming only became evident to a wider audience in the...

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A Dictionary of Geography (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... warming The increase in global temperatures brought about by the increased emission of greenhouse gases into the atmosphere. ‘Many of the indicators of climate change are suggesting that measurable change is broadly apparent globally, with eleven of the last twelve years the hottest on record across the globe, ice sheets and glaciers melting at rates exceeding scientific expectations, and trends in ecosystems resulting from responses to environmental change apparent, such as coral bleaching and the migration of species poleward and to higher altitudes’ (...

Global Warming

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The New Oxford Companion to Economics in India (3 ed.)

Reference type:
Subject Reference
Current Version:
2012

... Warming Global warming refers to the likely rise in annual average global surface temperature due to increase in the concentration of greenhouse gases (GHGs) in the atmosphere. Important anthropogenic GHGs are Carbon dioxide (CO 2 ), Methane (CH 4 ), and Nitrous Oxide (N 2 O). These gases are emitted due to the use of fossil fuels in the energy sector, certain agricultural and industrial practices, and deforestation. Their concentration in the atmosphere traps outgoing radiation from the earth leading to surface warming. According to the Government of...

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... warming The modification of climates that would result from the retention of an increased proportion of terrestrial radiation by certain atmospheric gases emitted mainly as by-products of human activities (i.e. an anthropogenically induced ‘greenhouse effect’ ). Computer models of the general circulation predict that the warming would occur mainly in middle to high latitudes, but its precise extent and consequences (e.g. in terms of changes in sea level) are...

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

...expect global warming to change world climate in a number of ways. For example, cold seasons are likely to become shorter and warm ones to become longer. Northern latitudes are likely to have wetter autumns and winters, and drier springs and summers. There would be more rainfall in the tropics , and subtropical areas could become drier. Global warming is likely to cause shifts in the main climate zones around the world. Some argue that this will probably bring a rise in the frequency and intensity of floods , droughts , typhoons , tornadoes , and ...

global-warming potential

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A Dictionary of Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2008

...-warming potential ( GWP ) A measure of the potential contribution of a gas to global warming . It is defined as the radiative forcing produced by the release of 1kg of the substance over its lifetime, relative to the radiative forcing of 1kg of carbon dioxide...

global warming potential

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... warming potential ( GWP ) A ranking of the absorptive capacity of the principal greenhouse gases expressed as the atmospheric warming effect of each compared with that of carbon dioxide, which is given a value of 1. The values take account of the wavelengths at which each gas absorbs radiation and its atmospheric residence time, and values are given over a specified number of years. On this scale, the GWP of methane is 56 (20 years), 21 (100 years), and 6.5 (500 years), nitrous oxide is 280 (20 years), 310 (100 years), and 170 (500 years), HFC-23 is...

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A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

...global warming potential ( GWP ) A measure of the extra heat added to the climate system over a certain period of time by a greenhouse gas , expressed as a multiple of that stored over the same period by an equal emitted mass of carbon dioxide . For example, the GWP for methane is 84 over a 24-year period but only 28 over a 100-year period, reflecting the half-life of methane in the atmosphere of 12.4 yrs....

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