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Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.

Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.
Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.
Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.
Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.
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Four chlorofluorocarbon (CFC) sections taken south of the Grand Banks.
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01/01/1997
Jenkins 4-up color.jpg
Date is approximate.
Caption from Oceanus magazine, Vol. 39, No. 2, Pg. 31:
Four chlorofluorocarbon (CFC) sections taken at various times along 55°W south of the Grand Banks. Note the absence of any significant CFC signal at the depth of the Labrador Sea Water (about 1,500 meters depth) in 1983, but the sudden flooding of these depths with CFCs in the later sections, as newly formed Labrador Sea Water flows around the Grand Banks and into the Sargasso Sea. These changes correspond to the tritium increases seen in the Bermuda time series.
Courtesy of William Jenkins
© Woods Hole Oceanographic Institution
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