Global Warming Facts
Is Global Warming Really Happening?
Yes. The Earth is already showing many signs of worldwide climate
change.
• Average temperatures have climbed 1.4 degrees Fahrenheit (0.8
degree Celsius) around the world since 1880, much of this in recent decades, according to
NASA's Goddard Institute for Space Studies.
• The rate of warming is increasing. The 20th century's last
two decades were the hottest in 400 years and possibly the warmest for several millennia,
according to a number of climate studies. And the United Nations' Intergovernmental Panel
on Climate Change (IPCC) reports that 11 of the past 12 years are among the dozen warmest
since 1850.
• The Arctic is feeling the effects the most. Average
temperatures in Alaska, western Canada, and eastern Russia have risen at twice the global
average, according to the multinational Arctic Climate Impact Assessment report compiled
between 2000 and 2004.
Here are the basic facts on
global warming.
FACT: There is no debate among scientists about the
basic facts of global warming.
FACT: Although water vapor traps more heat than CO2,
because of the relationships among CO2, water vapor and climate, to fight
global warming nations must focus on controlling CO2.
FACT: Any beneficial effects of global warming will
be far outweighed by damage and disruption.
MYTH: Global warming is just part of a
natural cycle. The Arctic has warmed up in the past.
FACT: The global warming we are experiencing is not
natural. People are causing it.
FACT: Although humans as a whole have survived things
such as drought, stretches of warmth and cold and more, entire societies have collapsed
from dramatic climatic shifts.
FACT: While different pockets of different countries
have experienced some cold winters here and there, the overall trend is warmer winters.
FACT: In most parts of the world, the retreat of
glaciers has been dramatic. The best available scientific data indicate that Greenland's
massive ice sheet is shrinking, less ice leads to more warming and feeds global
warming.
FACT: Climate prediction is fundamentally different
from weather prediction, just as climate is different from weather.
FACT: Global warming and the ozone hole are two
different problems.
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