File:Short Instrumental Temperature Record.png

Summary[edit]

Expanded record of instrumental temperatures showing recent global warming

This figure shows the last 25 years of globally averaged instrumental surface temperature measurements according to data collected by the Hadley Centre of the UK Meteorological Office and the Climatic Research Unit of the University of East Anglia. Data set TaveGL2v was used. The most recent documentation for this data set is Jones, P.D. and Moberg, A. (2003).

Also shown is a history of fluctuations in the El Nino Southern Oscillation and the period of volcanic disturbance due to the stratosphere-piercing eruption of Mount Pinatubo. The volcanic period is defined as the period of satellite discernable volcanic ash in the upper atmosphere (Luo et al. 2002). The El Nino / La Nina periods are defined here as times when the five month average of the Nino-3 Index deviated from its mean (over these 25 years) by more than 0.5 °C. Many of the interannual variations in temperature relative to the trend can be explained by the release (during El Nino) or uptake (during La Nina) of thermal energy by the oceans. The eruption of Mount Pinatubo, one of the largest of the century, may have depressed global temperature as a result of expelled ash and sulfates.

Copyright[edit]

This figure was prepared by Robert A. Rohde from publicly available data and is incorporated into the Global Warming Art project.

Image from Global Warming Art

This image is an original work created for Global Warming Art. Please refer to the image description page for more information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

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References[edit]

1. Jones, P.D. and Moberg, A. (2003) "Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001". Journal of Climate, 16, 206-223.
2. Luo Z, Rossow WB, Inoue T, Stubenrauch CJ (2002) Did the eruption of the Mt. Pinatubo volcano affect cirrus properties? J Clim 15:2806-2820 DOI: 10.1175/1520-0442(2002)015<2806:DTEOTM>2.0.CO;2

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