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RECORD TYPE: FEDERAL (NOTES MAIL)
CREATOR:Dana M. Perino ( CN=Dana M. Perino/OU=CBQ/O=EOP [ CEQ
CREATION DATE/TIME: l-APR-2003 15:39:48.00
SUBJECT:: EPW: CLIMATE CHANGE
TO:bholbrook~rnchq.org @ mnet ( bholbr~oakrnchq.org ~ inet [ UNKNOWN I
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citation
------------ Forwarded by Dana M. Perino/CEQ/EOP on 04/01/2003
03:39 PM -- - - - - - - - - - - - -
MichaelCatanzaro~epw.senate.gov (Michael Catanzaro)
04/01/2003 12:27:54 PM
Record Type: Record
To: See the distribution list at the b~ottom of this message
CC:
Subject: EPW: CLIMATE CHANGE
THE SCIENCE OF CLIMATE CHANGE
E&One of many natural factors affecting climate may be changes in the
brightnessI
of the Sun over decades to centuries. The magnetism on the Sun's surface is
marked by the coverage of sunspots - cool areas of intense magnetic
fields. The
number of sunspots varies over an 11-year period. This magnetic cycle is
linked
to a brightening and fading in the Sun's total energy output. Solar
brightnessI
changes measuring a few tenths of a percent, sustained over decades, could
drive
global temperatures to change.
U&Assuming that the Sun's magnetic change is a proxy for the Sun's changing
brightness, computer simulations of th climate suggest that a change of
0.4% inI
the Sun's brightness would produce obs rved global average temperature
changes
of about 0.5 C over the last 100 years.D8
[From E&Increasing Carbon Dioxide and -GlobalClimate Change,3i8 by Sallie
Baliunas
and Willie Soon; http://www.marshall.org/article.php?id=13]
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