News tagged with climate

Related topics: climate change , greenhouse gases , climate models , ocean , global warming

'Super tree' maps 20,000 medicinal, related plants

(Medical Xpress)—New research from the University of Reading, The Royal Botanic Gardens, Kew and Imperial College London published on 10 September in the Proceedings of the National Academy of Sciences (PNAS) ...

Sep 11, 2012
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Evolution pushes on as European men grow taller

A new study shows that the average height of European men has increased by nearly 11cm since the 1870s. Museum human origins expert Prof Chris Stringer explains why height fluctuates over time.

Sep 06, 2013
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Obese now outnumber hungry: Red Cross

Obese people now outnumber the hungry globally, but hardship for the undernourished is increasing amid a growing food crisis, the International Federation of the Red Cross warned Thursday.

Sep 22, 2011
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Climate

Climate encompasses the statistics of temperature, humidity, atmospheric pressure, wind, rainfall, atmospheric particle count and numerous other meteorological elements in a given region over long periods of time. Climate can be contrasted to weather, which is the present condition of these same elements over periods up to two weeks.

The climate of a location is affected by its latitude, terrain, altitude, ice or snow cover, as well as nearby water bodies and their currents. Climates can be classified according to the average and typical ranges of different variables, most commonly temperature and rainfall. The most commonly used classification scheme is the one originally developed by Wladimir Köppen. The Thornthwaite system, in use since 1948, incorporates evapotranspiration in addition to temperature and precipitation information and is used in studying animal species diversity and potential impacts of climate changes. The Bergeron and Spatial Synoptic Classification systems focus on the origin of air masses defining the climate for certain areas.

Paleoclimatology is the study and description of ancient climates. Since direct observations of climate are not available before the 19th century, paleoclimates are inferred from proxy variables that include non-biotic evidence such as sediments found in lake beds and ice cores, and biotic evidence such as tree rings and coral. Climate models are mathematical models of past, present and future climates.

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