Natural climate variability and limited observational records have made identifying human-influenced climate change at the poles difficult. But a human signature is now emerging in rising Arctic and Antarctic temperatures.
机构:
Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92103 USA
Univ Cambridge, Ctr Sci & Policy, Cambridge CB2 1TN, EnglandUniv Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92103 USA