Fact: The ten hottest years in record happened in our lifetime.
Source: Science Daily
Credentials: Research News
Credibility: Somewhat credible because I didn't find anything about who wrote this article, but I think it is somewhat credible because it is a research news website.
What It Says About the Fact: "The year 2007 is on pace to become one of the 10 warmest years for the contiguous U.S....The year was marked by exceptional drought in the U.S. Southeast and the West, which helped fuel another extremely active wildfire season. The year also brought outbreaks of cold air, and killer heat waves and floods. Meanwhile, the global surface temperature for 2007 is expected to be fifth warmest since records began in 1880....Including 2007, seven of the eight warmest years on record have occurred since 2001 and the 10 warmest years have all occurred since 1997. The global average surface temperature has risen between 0.6°C and 0.7°C since the start of the twentieth century, and the rate of increase since 1976 has been approximately three times faster than the century-scale trend."
Do I Believe the Source: I do believe this source.
Why or Why Not?: I believe this source because it is a research news website and I also believe this because it seems to be accurate because of the data they are providing.
Source: NASA
Credentials: Western Kentucky University and Suffolk University. Public Affairs Officer / (and a Meteorologist) at NASA. Public Affairs Specialist at NASA Goddard Space Flight Center.
Credibility: Very credible
What It Says About the Fact: "Over the past 30 years, the Earth has warmed by 0.6° C or 1.08° F. Over the past 100 years, it has warmed by 0.8° C or 1.44° F....The year 2005 was the warmest year in over a century, according to NASA scientists studying temperature data from around the world....2005 was the warmest year since the late 1800s, according to NASA scientists. 1998, 2002 and 2003 and 2004 followed as the next four warmest years....The result indicates that a strong underlying warming trend is continuing. Global warming since the middle 1970s is now about 0.6 degrees Celsius (C) or about 1 degree Fahrenheit (F). Total warming in the past century is about 0.8° C or about 1.4° F...."The five warmest years over the last century occurred in the last eight years," said James Hansen, director of NASA GISS. They stack up as follows: the warmest was 2005, then 1998, 2002, 2003 and 2004.""
Do I Believe the Source: I do believe this source.
Why or Why Not?: I believe this source because NASA is a government website. It has the .gov at the end of the web address.
Source: Scientists in Britain. UK Met Office and the University of East Anglia. Climatic Research Unit at the University of East Anglia . Fred Singer from the Science & Environmental Policy Project in Washington DC
Credentials: They all have degrees of some sort in their field.
Credibility: Very credible.
What It Says About the Fact: "This year has been the warmest on record in the northern hemisphere, say scientists in Britain. It is the second warmest globally since the 1860s, when reliable records began, they say...The global increase is 0.48 Celsius, making 2005 the second warmest year on record behind 1998, though the 1998 figure was inflated by strong El Nino conditions..."The data also show that the sea surface temperature in the northern hemisphere Atlantic is the highest since 1880," said Dr David Viner from the Climatic Research Unit at the University of East Anglia (UEA). However, he says, the long-term trend is clearly upwards — rapidly over the last decade — indicating the reality of human-induced global warming....However, Fred Singer from the Science & Environmental Policy Project in Washington DC, a centre of the "climate sceptics" community, disputed this interpretation. "If indeed 2005 is the warmest northern hemisphere year since 1860, all this proves is that 2005 is the warmest northern hemisphere year since 1860," he told the BBC News website. "It doesn't prove anything else, and certainly cannot be used by itself to prove that the cause of warming is the emission of greenhouse gases. "It requires a more subtle examination to know how much of warming is due to man-made causes — there must be some — and how much is down to natural causes." Eight of the 10 warmest years since 1860 have occurred within the last decade.""
Do I Believe the Source: I do believe this source.
Why or Why Not: I believe this because they have very good information and they also have degrees in their fields and they have data to back up their information.
Believing: I believe this fact because it has been backed up by all three of my sources and my sources are all reliable.
