Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 27, Issue 24, Pages 4101-4104Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2000GL012159
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Monthly-mean, near-surface temperatures are examined for records and trends after accounting for the influences of ENSO and the volcanic eruptions of Agung, El Chichon and Pinatubo. Of the 16 consecutive recordbreaking months in 1997-98, at least six can be attributed to ENSO-associated warmth. The period is still unusual, but no more unusual than 1990-91 when an equal number of records occurred in the ENSO-adjusted data. The warming trend over the past two decades is also shown to be unusual, but is found tin the raw data) to be not significantly different from the warming trend of the 1910s-1930s. When ENSO and volcanic effects are removed, however, the recent warming trend increases (to 0.25 degreesC/decade) and becomes highly significant compared to the earlier period.
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