Historical ice data ad hoc and haphazard
Until recently, the arctic ice extent was measured only during expeditions. The satellite record is too short to justify claims that there is anything exceptional about the apparent shrinkage in Arctic ice.
Immediately related elementsHow this works
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Anthropogenic Climate Change »Anthropogenic Climate Change
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Human impact on the Earth's climate? »Human impact on the Earth's climate?
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Case for significant anthropogenic forcing is clear »Case for significant anthropogenic forcing is clear
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Scientific measurements provide strong supporting evidence »Scientific measurements provide strong supporting evidence
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Observed melting of snow and ice »Observed melting of snow and ice
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Historical ice data ad hoc and haphazard
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Systematic data for parts of Arctic since late 18th Century »Systematic data for parts of Arctic since late 18th Century
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