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Solar-cycle-data.png(700 × 466 pixels, file size: 37 KB, MIME type: image/png)


Español: Variaciones en el ciclo solar.

This picture depicts the last three solar cycles as measured in solar irradiance, sunspot numbers, solar flare activity, and 10.7 cm radio flux. Solar irradiance, i.e the direct solar power at the top of the Earth's atmosphere, is depicted as both a daily measurement and a moving annual average. All other data are depicted as the annual average value.

See w:solar variation for more information.


This image was created by Robert A. Rohde from the published data listed below and replaces an image created by William M. Connolley. It is part of 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.
GNU head 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.
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
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  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This licensing tag was added to this file as part of the GFDL licensing update.

Data sources

  1. Irradiance:
  2. International sunspot number:
  3. Flare index:
  4. 10.7cm radio flux:


File history

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current08:31, 1 February 2008Thumbnail for version as of 08:31, 1 February 2008700 × 466 (37 KB)Xiong Chiamiovoptimized using optipng
20:12, 20 July 2006Thumbnail for version as of 20:12, 20 July 2006700 × 466 (44 KB)Nils Simon== Description == thumb|right|350px|Variations in sunspot number since 1610. thumb|right|250px|Changes in solar activity since 1400. This picture depicts the last three solar cycles
12:55, 24 May 2005Thumbnail for version as of 12:55, 24 May 2005753 × 565 (9 KB)Xenoforme~commonswikiPic of 20 years of solar output data. Created by William M. Connolley using IDL. Data source: which is linked from

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