Mid-Latitude (30°–60° N) climatic warming inferred by combining borehole temperatures with surface air temperatures Public Deposited

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  • We construct a mid-latitude (30° – 60° N) reduced temperature-depth profile from a global borehole temperature database compiled for climate reconstruction. This reduced temperature profile is interpreted in terms of past surface ground temperature change and indicates warming on the order of 1°C over the past 100 to 200 years. The combination of an initial temperature (the primary free parameter) with the last 140 years of gridded surface air temperature (SAT) data yields a synthetic temperature profile that is an excellent fit to observations, accounting for 99% of the observed variance and a RMS misfit of only 12 mK. The good correlation suggests that this reduced temperature profile shares much information with the mean SAT record over large areas and long time-scales. Our analysis indicates 0.7° ± 0.1°C of ground warming between pre-industrial time and the 1961-1990 mean SAT.
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  • Chapman, D. S., Harris, R. N., (2001) Mid-Latitude (30°–60° N) climatic warming inferred by combining borehole temperatures with surface air temperatures, Geophys. Res. Lett, 28, 5, 747-750.
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  • description.provenance : Made available in DSpace on 2010-05-26T16:03:55Z (GMT). No. of bitstreams: 1 Harris&Chapman_GRL01.pdf: 447978 bytes, checksum: 9436ba377964380cba95860c275be243 (MD5) Previous issue date: 2001
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-05-26T16:03:55Z (GMT) No. of bitstreams: 1 Harris&Chapman_GRL01.pdf: 447978 bytes, checksum: 9436ba377964380cba95860c275be243 (MD5)
  • Vol. 28 No. 5 (2001)
  • Geophysical Research Letters
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2010-05-25T22:44:35Z No. of bitstreams: 1 Harris&Chapman_GRL01.pdf: 447978 bytes, checksum: 9436ba377964380cba95860c275be243 (MD5)

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