about 28% and losses from the polar ice sheets
contributing the remainder. From 1993 to 2003 the sum of these
climate contributions is consistent within uncertainties with the
total
sea level rise that is directly observed. {WGI 4.6, 4.8, 5.5, SPM, Table
SPM.1}
Observed decreases in snow and ice extent are also consistent
with warming (Figure 1.1). Satellite data since 1978 show that an-
nual average
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