Warmer. The graph below shows that the mean trend is an increase in both land and ocean temperatures.
It depends on where you are, and which study you are reading. Antarctica has seen both warming and cooling in different regions, and depending on who’s research you are consulting it may be overall warmer or cooler. (http://www.usatoday.com/news/science/cold-science/2002-01-13-antarctic-cooling.htm and http://www.guardian.co.uk/environment/2009/jan/21/global-warming-antarctica)
There also is the newly discovered “coastal cooling” effect, which is notable along the coast of California. This region has seen colder and foggier winters, despite three years of major drought. Snow has also been more common in areas of California that traditionally never/rarely saw snow, such as Marin County and the South Bay.
As of July 2009, the earth’s oceans have had the warmest recorded temperatures. The burning of fossil fuels has led to the greenhouse effect, which has warmed the climate more and more for the last century, let alone the last 5 years. Even a degree of warming can affect the earth, and in the last century, we’ve had an average temperature change of 0.6° Celsius (1.1°F). Arctic sea ice, glaciers and permafrost are all melting, adding to global warming.
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