Til Øyvind Seland og evt. andre interesserte, her et ny dokumentajon
for oppvarmingen.
Karsten Johansen
Sjekk denne (fra: EPA Climate Change Outdoor List
<CLIMATE-OUTDOOR-L@LISTSERV.ICFCONSULTING.COM>):
***Warming Trend Seen in New Data Record
A team of 13 scientists recently published data showing a steady 150-year
warming trend in global temperatures. This effort produced one of the
largest and longest records of observable climate data ever assembled.
The scientists looked at lake and river records from around the world to
find fall freeze dates or spring breakup dates from 1846-1995. This
information was obtained from sources ranging from newspaper archives to
transportation ledgers.
"We think this is a very robust observation: It is clearly getting warmer
in the Northern Hemisphere," says John Magnuson, of the University of
Wisconsin and the lead author of the study. "The importance of these
records is that they come from very simple, direct human observations,
making them very difficult to refute in any general way."
Magnuson cautions that these results do not provide proof that greenhouse
gases are responsible for this warming trend, but does point out that his
findings are consistent with climate change models predicted by computers.
The full text of Magnuson's article appears in the September 8, 2000, issue
of Science. For a more extensive summary, please see
http://www.newswise.com/articles/2000/9/LAKEICE.UWI.html
To learn about climate change, check out EPA's website at
www.epa.gov/globalwarming The site has a wealth of information on the
climate system; greenhouse gas emissions; impacts of climate change; and
actions that can be taken at the national, state, local, business, and
individual levels.
Use EPA's ClimateLink service at www.epa.gov/globalwarming/climatelink to
sign up for additional climate change listservs, share ideas about climate
change information and outreach, and access EPA's library of downloadable
climate change information and outreach materials.
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