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Ice Core Data
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Last 100,000 Years
Includes the last glacial cycle, revealing patterns of long, cold glacial periods and shorter, warmer interglacials. Dust and gas records indicate large-scale environmental changes.
Last 800,000 Years
Ice core data extends over eight glacial cycles, with detailed insights into the CO2 and CH4 cycles, showing natural oscillations and the 'Mid-Brunhes Event', a significant climate warm period.
Last 1,000 Years
Climate has been relatively stable compared to deeper time spans; famous 'Little Ice Age' and 'Medieval Warm Period' are evident. Carbon dioxide levels have risen markedly since the Industrial Revolution.
Last 400,000 Years
Encompasses four glacial cycles with evidence of corresponding shifts in temperature, sea level, and atmospheric composition including variations in greenhouse gases.
Last 20,000 Years
Marking the end of the last glacial period, the ice core data shows a significant warming trend and transition into our current interglacial period, with increased greenhouse gases like CO2 and CH4.
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