Deep Ocean Temperatures used to be 10 to 15 degrees warmer

My March 8th post shows a chart illustrating deep ocean temperatures for the last 100 million years. At the website Global Climate Change Student Guide, the original home of the chart, I also found the following excerpt comparing prehistoric deep ocean temperatures with today:

… evidence from oxygen isotope records (Douglas & Woodruff, 1981) revealed that deep sea ocean temperatures were at least 10°C to 15°C warmer than they are today (see Figure 5.6). Early Cenozoic sea surface temperatures around Antarctica were also considerably warmer than today (Shackleton & Kennet, 1975) .

The early Eocene (55 to 50Ma) was the warmest period during the Cenozoic. Various climatic indices suggest that tropical conditions extended 10° to 15° of latitude poleward of their present limits.

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CarolChapman is an author and inspirational speaker. She speaks at weekend retreats,day-long events, and half-day programs. Her seminars are not onlyinformative and transformational but also fun and entertaining. They ofteninclude participatory workshops and visual aids, such as videos andphotographs. She specializes in dream interpretation, reincarnation, andAtlantis, and is the author of When WeWere Gods, Arrival of the Gods in Egypt, and Have Your Heart’s Desire.

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