climate change

(redirected from Natural climate variability)
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climate change:

see global warmingglobal warming,
the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution. Global warming and its effects, such as more intense summer and winter storms, are also referred to as climate
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Climate change

Attributed directly or indirectly to human activity that alters the composition of the global atmosphere and is in addition to natural climate variability over comparable time periods; often used to describe global warming with environmental implications including temperature and sea-level rises; changes in rainfall and the intensity and frequency of extreme weather events; groundwater, atmospheric, and ocean circulation patterns and locations; and displacement of ecosystems and commercial resources.

climate change

[′klī·mət ‚chānj]
(meteorology)
Any change in global temperatures and precipitation over time due to natural variability or to human activity.
References in periodicals archive ?
This campaign demonstrates we can take long-term measures that adapt to our region's natural climate variability.
By using a 'multi-model ensemble,' we were better able to characterize decadal-scale natural climate variability, which is a critical aspect of the detection and attribution of a human-caused climate change signal.
National Academy of Sciences (NAS), Natural Climate Variability on Decade-to-Century Time Scales, 1995; Douglass, Pearson, and Singer, Geophysical Research Letters, 9 July, 2004; NAS, Reconciling Observations of Global Temperature Change, 2000; NAS, Radiative Forcing of Climate Change: Expanding the Concept and Addressing Uncertainties, 2005; NAS, Natural Climate Variability on Decade-to-Century Time Scales, 1995; and United Nations, Third Assessment Report, 2001.
While this year's September minimum extent was greater than the all-time low in 2007, it remains significantly below the long-term average and well outside the range of natural climate variability, according to scientists involved in the analysis.
Both instruments should help shed light on how human factors contribute to global warming compared to natural climate variability caused by the sun.
However, Matthias Huss, a glaciologist at the University of Fribourg in Switzerland, claims that about half of the glacier loss in the Swiss Alps is due to natural climate variability.
The 21st Century Environment Commission reports that the current rate of extinction of plant and animal species globally is as much as 10,000 times the rate of extinction due to natural climate variability and natural disasters.
A DfID spokesman said the research had also concluded that emissions from human activity, rather than natural climate variability, were responsible for the change in temperature.
While this year's September minimum extent was greater than each of the past two record-setting and near-record-setting low years, it is still significantly below the long-term average and well outside the range of natural climate variability, said NSIDC Research Scientist Walt Meier.
The findings may be seized on by deniers of man-made climate change as evidence of the scale of natural climate variability.