Other Scholarly Content

 

Climate change in India inferred from geothermal observations Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/0z709225g

copyrighted by American Geophysical Union

Descriptions

Attribute NameValues
Creator
Abstract
  • Temporal variations in surface ground temperature impart a signal to the subsurface thermal regime that is captured in borehole temperature-depth profiles. Seventy temperature-depth profiles in India, located between 12° and 28°N, are analyzed to infer past changes in ground temperature. These profiles exhibit predominantly positive anomalous temperatures relative to the background thermal regime beginning at depths of 75–150 m and increasing toward the surface. This pattern is consistent with warming over the past century. An interpretation in terms of linear surface temperature change indicates warming of about 0.9° ± 0.1°C over the past 150 years. Relatively complete surface air temperature (SAT) records from meteorological stations near the boreholes indicate similar rates of warming over the last century. A combined analysis of borehole temperatures and SAT records yields a long-term, preobservational mean temperature, 0.8° ± 0.1°C lower than the 1961–1990 mean SAT. When the most recent decade is included directly in the analysis, the average total warming in India from the early 1800s to the late 1990s is ~1.2°C.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Roy, S., R. N. Harris, R. U. M. Rao, and D. S. Chapman (2002), Climate change in India inferred from geothermal observations, J. Geophys. Res., 107(B7), 2138.
Keyword
Rights Statement
Publisher
Replaces
Additional Information
  • Vol. 107 No. B7 (2002)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-06-01T20:59:30Z (GMT) No. of bitstreams: 1 Roy_etal_JGR01.pdf: 1368342 bytes, checksum: addb59402f2bacdaf661942b4f6b4a95 (MD5)
  • Journal of Geophysical Research
  • description.provenance : Made available in DSpace on 2010-06-01T20:59:30Z (GMT). No. of bitstreams: 1 Roy_etal_JGR01.pdf: 1368342 bytes, checksum: addb59402f2bacdaf661942b4f6b4a95 (MD5) Previous issue date: 2002
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2010-06-01T20:41:07Z No. of bitstreams: 1 Roy_etal_JGR01.pdf: 1368342 bytes, checksum: addb59402f2bacdaf661942b4f6b4a95 (MD5)

Relationships

Parents:

This work has no parents.

Items