Detection of volcanic, solar and greenhouse gas signals in paleo-reconstructions of Northern Hemispheric temperature

We apply a multiple regression method to estimate the response to anthropogenic and natural climate forcings simultaneously from a number of paleo‐reconstructions of Northern Hemispheric average temperature. These long records (600 to 1000 years) provide a unique opportunity to distinguish between d...

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Veröffentlicht in:Geophysical research letters 2003-03, Vol.30 (5), p.46.1-n/a
Hauptverfasser: Hegerl, Gabriele C., Crowley, Thomas J., Baum, Steven K., Kim, Kwang-Yul, Hyde, William T.
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container_issue 5
container_start_page 46.1
container_title Geophysical research letters
container_volume 30
creator Hegerl, Gabriele C.
Crowley, Thomas J.
Baum, Steven K.
Kim, Kwang-Yul
Hyde, William T.
description We apply a multiple regression method to estimate the response to anthropogenic and natural climate forcings simultaneously from a number of paleo‐reconstructions of Northern Hemispheric average temperature. These long records (600 to 1000 years) provide a unique opportunity to distinguish between different external influences on climate. The response to volcanic forcing is reliably detected in all reconstructions, and the simulated temperature response to volcanic eruptions compares favorably with observations. The response to solar forcing is detected in Hemispheric mean data only over some periods in some records, and appears weak. Although most records can be used only to the middle of the 20th century, the temperature response to CO2 can be detected by this time in most records.
doi_str_mv 10.1029/2002GL016635
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source Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Climatology. Bioclimatology. Climate change
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
title Detection of volcanic, solar and greenhouse gas signals in paleo-reconstructions of Northern Hemispheric temperature
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