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Mean Annual Temperature Trends and Their Vertical Structure in the Tropical Andes
Geophysical Research Letters (2000)
  • M. Vuille
  • Raymond S Bradley, University of Massachusetts - Amherst
Mean annual temperature trends in the tropical Andes were determined over the last six decades (1939–1998), to investigate the apparent inconsistency between the observed glacier retreat and the reported slight cooling trend in the lower tropical troposphere after 1979. Our results indicate that temperature in the tropical Andes has increased by 0.10°–0.11°C/decade since 1939. The rate of warming has more than tripled over the last 25 years (0.32°–0.34°C/decade) and the last two years of the series, associated with the 1997/98 El Niño, were the warmest of the last six decades. Temperature trends vary with altitude and show a generally reduced warming with increasing elevation. However, despite the lower rate of warming, the trend toward increased temperatures is still significant at the 95% confidence level, even at the highest elevations. Clearly high elevation surface stations in the Andes do not reflect the slight cooling trend observed in the tropical lower‐troposphere.
Publication Date
Publisher Statement
Doi:10.1029/2000GL011871 An edited version of this paper was published by AGU. Copyright 2000 American Geophysical Union.
Citation Information
M. Vuille and Raymond S Bradley. "Mean Annual Temperature Trends and Their Vertical Structure in the Tropical Andes" Geophysical Research Letters Vol. 27 Iss. 20 (2000)
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