Image:Short Instrumental Temperature Record.png

From Wikipedia, the free encyclopedia

• Image
• File history
• File links

No higher resolution available.
Short_Instrumental_Temperature_Record.png‎ (800 × 566 pixels, file size: 33 KB, MIME type: image/png)

[edit] Description

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 HadCRUT3 was used. The most recent documentation for this data set is Brohan et al. (2006).

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 discernible 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. The eruption of Krakatoa in the 1880's caused global temperatures to drop dramatically. Mount Tambora erupted in 1815 with a rating of seven. The "Year without a summer" was a direct result of the eruption. Crops failed and frosty mornings in July across much of the northern states were common that year. Proof that a single volcano can affect the earth's temperatures.

[edit] Copyright

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

[edit] References

1. Brohan, P., J.J. Kennedy, I. Haris, S.F.B. Tett and P.D. Jones (2006). "Uncertainty estimates in regional and global observed temperature changes: a new dataset from 1850". J. Geophaysical Research 111: D12106. doi:10.1029/2005JD006548. .
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

This graph image was uploaded in a raster image format such as PNG, GIF, or JPEG. However, it contains information that could be stored more efficiently and/or accurately in the SVG format, as a vector graphic. If possible, please upload an SVG version of this image. After doing so, please replace all instances of the previous version throughout Wikipedia (noted under the “File links” header), tag the old version with {{Vector version available|NewImage.svg}}, and remove this tag. For more information, see Wikipedia:Preparing images for upload. For assistance with converting to SVG, please see the Graphics Lab.

This image or media file may be available on the Wikimedia Commons as Image:Short Instrumental Temperature Record.png. The uploader requests that the local copy of this work not be deleted.

The Wikimedia Commons has another file with the same name as this file. To include the Commons media file in Wikipedia, this locally stored file needs to be renamed.

File history

Click on a date/time to view the file as it appeared at that time.

• Search for duplicate files
• Edit this file using an external application

  See the setup instructions for more information.

File links