Heat pollution: Difference between revisions
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'''Heat pollution''' (atmospheric) is a term used to describe the release of heat into the environment by human activities.<ref>{{citeweb|title=Air Pollution & the Urban Heat Island|url=http://iri.columbia.edu/~bhoch/bergen/pdf/lec14notes.pdf|publisher=''[[The Earth Institute]]''|accessdate=2008-10-03}}</ref> Heat pollution may be significant on a local scale, but globally the contribution of direct waste heat is small.<ref>{{citeweb|title=Global warming is not from waste heat|url=http://mustelid.blogspot.com/2005/04/global-warming-is-not-from-waste-heat.html|author=''[[William Connolley]]''|accessdate=2008-10-03}}</ref> By contrast, [[global warming]] is thought to be the result of the increase in [[greenhouse gas]]es (CO2 emissions).<ref>{{citeweb|title=Top Firms Call for Climate Action|url=http://www.edf.org/article.cfm?contentID=5828|publisher=''[[Environmental Defense Fund]]|accessdate=2008-10-01}}</ref> |
'''Heat pollution''' (atmospheric) is a term used to describe the release of heat into the environment by human activities.<ref>{{citeweb|title=Air Pollution & the Urban Heat Island|url=http://iri.columbia.edu/~bhoch/bergen/pdf/lec14notes.pdf|publisher=''[[The Earth Institute]]''|accessdate=2008-10-03}}</ref> Some causes of of excess heat released into urban areas are the displacement of trees and vegetation to make way for development and even prevailing weather conditions. Heat from vehicles, manufacturing plants, and [[thermal power station]]s also contribute to excess heat in urban areas.<ref name="epa1"/> Heat pollution may be significant on a local scale, but globally the contribution of direct waste heat is small.<ref>{{citeweb|title=Global warming is not from waste heat|url=http://mustelid.blogspot.com/2005/04/global-warming-is-not-from-waste-heat.html|author=''[[William Connolley]]''|accessdate=2008-10-03}}</ref> By contrast, [[global warming]] is thought to be the result of the increase in [[greenhouse gas]]es (CO2 emissions).<ref>{{citeweb|title=Top Firms Call for Climate Action|url=http://www.edf.org/article.cfm?contentID=5828|publisher=''[[Environmental Defense Fund]]|accessdate=2008-10-01}}</ref> |
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==Urban heat island== |
==Urban heat island== |
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{{main|Urban heat island}} |
{{main|Urban heat island}} |
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[[Developed environments]] like concrete and black roads absorb and store heat more readily than natural [[land cover]] because of their [[Heat_capacity#Heat_capacity|heat capacity]]. The urban heat island phenomenon traps heat in [[thermal mass (Building)|thermal mass]] and is ultimately emitted back into to the urban air especially at night.<ref>{{citeweb|title=Anthropogenic heat island at Barrow|author=Kenneth M. Hinkel|url=http://www.geography.uc.edu/~kenhinke/uhi/Hinkel&Nelson_JGR-A_2007.pdf|publisher=''[[Journal of Geophysical Research]]''|doi=10.1029/2006JD007837}}</ref> This hot city phenomenon has far-reaching environmental sustainability and human livability implications, ranging from the aggravation of health problems such as [[hyperthermia]], increasing the intensity of urban air pollution, and contributing to extreme [[heat wave]]s.<ref>{{citeweb|title=Heat Wave: A Major Summer Killer|url=http://www.nws.noaa.gov/om//brochures/heat_wave.shtml|publisher=''[[National Weather Service]]''|accessdate=2008-10-03}}</ref> Excess heat also adds to the ever-increasing use of air conditioners, with higher demands on the energy supply, potentially resulting in brownouts and higher greenhouse gas emissions.<ref>{{citeweb|title=How Do Heat Islands Affect Us? |
[[Developed environments]] like concrete and black roads absorb and store heat more readily than natural [[land cover]] because of their [[Heat_capacity#Heat_capacity|heat capacity]]. The urban heat island phenomenon traps heat in [[thermal mass (Building)|thermal mass]] and is ultimately emitted back into to the urban air especially at night.<ref>{{citeweb|title=Anthropogenic heat island at Barrow|author=Kenneth M. Hinkel|url=http://www.geography.uc.edu/~kenhinke/uhi/Hinkel&Nelson_JGR-A_2007.pdf|publisher=''[[Journal of Geophysical Research]]''|doi=10.1029/2006JD007837}}</ref> This hot city phenomenon has far-reaching environmental sustainability and human livability implications, ranging from the aggravation of health problems such as [[hyperthermia]], increasing the intensity of urban air pollution, and contributing to extreme [[heat wave]]s.<ref>{{citeweb|title=Heat Wave: A Major Summer Killer|url=http://www.nws.noaa.gov/om//brochures/heat_wave.shtml|publisher=''[[National Weather Service]]''|accessdate=2008-10-03}}</ref> Excess heat also adds to the ever-increasing use of air conditioners, with higher demands on the energy supply, potentially resulting in brownouts and higher greenhouse gas emissions.<ref name="epa1">{{citeweb|title=How Do Heat Islands Affect Us? |
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|url=http://www.epa.gov/hiri/resources/pdf/HIRIbrochure.txt|publisher=''[[Environmental Protection Agency]]''|accessdate=2008-10-02}}</ref> |
|url=http://www.epa.gov/hiri/resources/pdf/HIRIbrochure.txt|publisher=''[[Environmental Protection Agency]]''|accessdate=2008-10-02}}</ref> |
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Revision as of 03:27, 4 October 2008
Heat pollution (atmospheric) is a term used to describe the release of heat into the environment by human activities.[1] Some causes of of excess heat released into urban areas are the displacement of trees and vegetation to make way for development and even prevailing weather conditions. Heat from vehicles, manufacturing plants, and thermal power stations also contribute to excess heat in urban areas.[2] Heat pollution may be significant on a local scale, but globally the contribution of direct waste heat is small.[3] By contrast, global warming is thought to be the result of the increase in greenhouse gases (CO2 emissions).[4]
Urban heat island
Developed environments like concrete and black roads absorb and store heat more readily than natural land cover because of their heat capacity. The urban heat island phenomenon traps heat in thermal mass and is ultimately emitted back into to the urban air especially at night.[5] This hot city phenomenon has far-reaching environmental sustainability and human livability implications, ranging from the aggravation of health problems such as hyperthermia, increasing the intensity of urban air pollution, and contributing to extreme heat waves.[6] Excess heat also adds to the ever-increasing use of air conditioners, with higher demands on the energy supply, potentially resulting in brownouts and higher greenhouse gas emissions.[2]
See also
References
- ^ "Air Pollution & the Urban Heat Island" (PDF). The Earth Institute. Retrieved 2008-10-03.
{{cite web}}: Italic or bold markup not allowed in:|publisher=(help) - ^ a b "How Do Heat Islands Affect Us?". Environmental Protection Agency. Retrieved 2008-10-02.
{{cite web}}: Italic or bold markup not allowed in:|publisher=(help) - ^ William Connolley. "Global warming is not from waste heat". Retrieved 2008-10-03.
- ^ "Top Firms Call for Climate Action". Environmental Defense Fund. Retrieved 2008-10-01.
{{cite web}}: Italic or bold markup not allowed in:|publisher=(help) - ^ Kenneth M. Hinkel. "Anthropogenic heat island at Barrow" (PDF). Journal of Geophysical Research. doi:10.1029/2006JD007837.
{{cite web}}: Italic or bold markup not allowed in:|publisher=(help) - ^ "Heat Wave: A Major Summer Killer". National Weather Service. Retrieved 2008-10-03.
{{cite web}}: Italic or bold markup not allowed in:|publisher=(help)