Work

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

Year: 2003

Type: article

Abstract: 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 CO 2 can be detected by this time in most records.

Source: Geophysical Research Letters

DOI: 10.1029/2002gl016635

Authors: Gabriele C. Hegerl, Thomas J. Crowley, Steven K. Baum, Kwang‐Yul Kim, William T. Hyde

Institutions: Duke University, Texas A&M University, Florida State University

Language: English

Topic: Geology and Paleoclimatology Research

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDG: Climate action

Open Access status: bronze

Funders: National Science Foundation, National Oceanic and Atmospheric Administration, Biological and Environmental Research