|The Discovery of Global Warming|
Variations of oxygen isotopes in the Camp Century ice core (with
changes from a smoothed curve set off in black), going back 14,000 years.
Higher temperatures to right. (Difference of isotopes
in parts per thousand graphed against years Before Present.)
Viewing a section of core, 1964. Compare the picture here of the 1989-92 GISP trench.
BACK to Climate Cycles
Photo by David Atwood, U.S. Army-ERDC-CRREL
(Cold Regions Research and Engineering Laboratory), courtesy Herb Ueda.