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Footnotes
for the Summary for
Policymakers of IPCC
Working Group II
Source
& © :
IPCC TAR SPM of WG II
1
Climate change in IPCC
usage refers to any
change in climate over
time, whether due to
natural variability
or as a result of human
activity. This usage
differs from that in
the Framework Convention
on Climate Change, where
climate change refers
to a change of climate
that is attributed directly
or indirectly to human
activity that alters
the composition of the
global atmosphere and
that is in addition
to natural climate
variability observed
over comparable time
periods. Attribution
of climate change to
natural forcing and
human activities has
been addressed by Working
Group I.
2
The report has been
written by 183 Coordinating
Lead Authors and Lead
Authors, and 243 Contributing
Authors. It was reviewed
by 440 government and
expert reviewers, and
33 Review Editors oversaw
the review process.
3
Delegations from 100
IPCC member countries
participated in the
Sixth Session of Working
Group II in Geneva on
13-16 February 2001.
4
A more comprehensive
summary of the report
is provided in the Technical
Summary, and relevant
sections of that volume
are referenced in brackets
at the end of paragraphs
of the Summary for Policymakers
for readers who need
more information.
5
There are 44 regional
studies of over 400
plants and animals,
which varied in length
from about 20 to 50
years, mainly from North
America, Europe, and
the southern polar region.
There are 16 regional
studies covering about
100 physical processes
over most regions of
the world, which varied
in length from about
20 to 150 years. See
Section
7.1 of the Technical
Summary for more
detail.
6
In this Summary
for Policymakers,
the following words
have been used where
appropriate to indicate
judgmental estimates
of confidence (based
upon the collective
judgment of the authors
using the observational
evidence, modeling results,
and theory that they
have examined): very
high (95% or greater),
high (67-95%), medium
(33-67%), low (5-33%),
and very low (5% or
less). In other instances,
a qualitative scale
to gauge the level of
scientific understanding
is used: well established,
established-but-incomplete,
competing explanations,
and speculative. The
approaches used to assess
confidence levels and
the level of scientific
understanding, and the
definitions of these
terms, are presented
in Section
1.4 of the Technical
Summary. Each time
these terms are used
in the
Summary
for Policymakers,
they are footnoted and
in italics.
7
Details of projected
climate changes, illustrated
in Figure
SPM-2, are provided
in the Working Group
I Summary for Policymakers.
8
Details of projected
contributions to sea-level
rise from the West Anarctic
Ice Sheet and Greenland
Ice Sheet are provided
in the
Working
Group I Summary for
Policymakers.
9
Global mean temperature
change is used as an
indicator of the magnitude
of climate change. Scenario-dependent
exposures taken into
account in these studies
include regionally differentiated
changes in temperature,
precipitation, and other
climatic variables.
10
Eight studies have modeled
the effects of climate
change on these diseases,
five on malaria and
three on dengue. Seven
use a biological, or
process-based approach,
and one uses an empirical,
statistical approach.
Source
& © : IPCC
TAR SPM of WG II
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