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alright many many years ago 45 degrees was omg its so cold! and its been getting colder and colder in the winter but if global warming is such an issue now why isnt it getting warmer instead of colder?

2007-02-06 20:03:09 · 5 answers · asked by Anonymous in Environment

5 answers

"Global warming" is not a linear process. For example, increased melting of polar ice can cool ocean currants which have a tempering effect on various regional climates.

This is why some regions show a trend of cooling during the time periods claimed to be effected by global warming.

Remember the whole "el nino"/"la nina" back in the late 90s? Very hot summer followed by very cold winter? That was driven by unusual current temps in the pacific.

2007-02-06 20:14:20 · answer #1 · answered by zzycatch 3 · 0 0

Global warming is measured by the total change in the average global temperature. Different areas are affected in different ways.
"Relative to the period 1860–1900, global temperatures on both land and sea have increased by 0.75 °C (1.4 °F), according to the instrumental temperature record. Since 1979, land temperatures have increased about twice as fast as ocean temperatures (0.25 °C/decade against 0.13 °C/decade (Smith, 2005). Temperatures in the lower troposphere have increased between 0.12 and 0.22 °C per decade since 1979, according to satellite temperature.measurements. Over the one or two thousand years before 1850, world temperature is believed to have been relatively stable, with possibly regional fluctuations such as the Medieval Warm Period or the Little Ice Age.

Based on estimates by NASA's Goddard Institute for Space Studies, 2005 was the warmest year since reliable, widespread instrumental measurements became available in the late 1800s, exceeding the previous record set in 1998 by a few hundredths of a degree. Estimates prepared by the World Meteorological Organization and the UK Climatic Research Unit concluded that 2005 was still only the second warmest year, behind 1998.[4][5]

A number of temperature records are available based on different data sets with different time frames. The longest perspective is available from various proxy records for recent millennia; see temperature record of the past 1000 years for a discussion of these records and their differences. An approximately global instrumental record of temperature near the earth's surface begins in about 1860. Global observations of the atmosphere well above the earth's surface using data from radiosondes began shortly after World War II. Satellite temperature measurements of the tropospheric temperature date from 1979. The attribution of recent climate change is clearest for the most recent period of the last 50 years, for which the most detailed data are available."
http://en.wikipedia.org/wiki/Global_warming#History_of_warming
See here for info on the effects
"http://en.wikipedia.org/wiki/Effects_of_global_warming

2007-02-06 20:16:01 · answer #2 · answered by Jake B 2 · 0 0

Global warming not only cause warmer temperature, but it make the temperature more extreme: very hot on one place in the world and very cold on the other place.

2007-02-06 23:12:54 · answer #3 · answered by Robby S 1 · 0 0

The theory of man-made global warming is helping researchers obtain grants and money. But only if they say global warming is human induced.
It's pretty cold here too. But of course, that will be blamed on global warming also. hehe

2007-02-08 13:36:35 · answer #4 · answered by martinmagini 6 · 0 0

45 degrees is not cold my friend.Even in the equator the temperature is about 33 degrees.

2007-02-06 20:16:35 · answer #5 · answered by yan 2 · 0 0

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