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- Solar_variation abstract "Solar variation is the change in the amount of radiation emitted by the Sun (see Solar radiation) and in its spectral distribution over years to millennia. These variations have periodic components, the main one being the approximately 11-year solar cycle (or sunspot cycle). The changes also have aperiodic fluctuations. In recent decades, solar activity has been measured by satellites, while before it was estimated using 'proxy' variables. Scientists studying climate change are interested in understanding the effects of variations in the total and spectral solar irradiance on Earth and its climate.Variations in total solar irradiance were too small to detect with technology available before the satellite era, although the small fraction in ultra-violet light has recently been found to vary significantly more than previously thought over the course of a solar cycle. Total solar output is now measured to vary (over the last three 11-year sunspot cycles) by approximately 0.1%, or about 1.3 Watts per square meter (W/m2) peak-to-trough from solar maximum to solar minimum during the 11-year sunspot cycle. The amount of solar radiation received at the outer limits of Earth's atmosphere averages 1366 W/m2. There are no direct measurements of the longer-term variation, and interpretations of proxy measures of variations differ. The intensity of solar radiation reaching Earth has been relatively constant through the last 2000 years, with variations estimated at around 0.1–0.2%. Solar variation, together with volcanic activity are hypothesized to have contributed to climate change, for example during the Maunder Minimum. Changes in solar brightness are too weak to explain recent climate change.".
- Solar_variation thumbnail Solar-cycle-data.png?width=300.
- Solar_variation wikiPageExternalLink 2000ESASP.463...51S.
- Solar_variation wikiPageExternalLink tsi_data.htm.
- Solar_variation wikiPageExternalLink fs-0095-00.
- Solar_variation wikiPageExternalLink halifax_brekke.pdf.
- Solar_variation wikiPageExternalLink reid00.html.
- Solar_variation wikiPageExternalLink 122.htm.
- Solar_variation wikiPageExternalLink i1052-5173-13-7-4.pdf.
- Solar_variation wikiPageExternalLink ch2s2-7-1-1.html.
- Solar_variation wikiPageExternalLink 351042a0.html.
- Solar_variation wikiPageExternalLink solar_variability.html.
- Solar_variation wikiPageExternalLink 1627.pdf.
- Solar_variation wikiPageExternalLink Rahmstorf%20et%20al.%202004%20EOS.pdf.
- Solar_variation wikiPageExternalLink halifax_brekke.pdf.
- Solar_variation wikiPageID "299024".
- Solar_variation wikiPageRevisionID "605269218".
- Solar_variation caption "1979".
- Solar_variation direction "vertical".
- Solar_variation footer "Multiple factors have affected terrestrial climate change, including internal forcings and human influences such as greenhouse gas emissions and land use change on top of any effects of solar variability.".
- Solar_variation hasPhotoCollection Solar_variation.
- Solar_variation image "NASAdata1979to2009.jpg".
- Solar_variation width "220".
- Solar_variation subject Category:Climate_forcing_agents.
- Solar_variation subject Category:Periodic_phenomena.
- Solar_variation subject Category:Solar_phenomena.
- Solar_variation type PeriodicPhenomena.
- Solar_variation type Phenomenon100034213.
- Solar_variation type PhysicalEntity100001930.
- Solar_variation type Process100029677.
- Solar_variation type SolarPhenomena.
- Solar_variation comment "Solar variation is the change in the amount of radiation emitted by the Sun (see Solar radiation) and in its spectral distribution over years to millennia. These variations have periodic components, the main one being the approximately 11-year solar cycle (or sunspot cycle). The changes also have aperiodic fluctuations. In recent decades, solar activity has been measured by satellites, while before it was estimated using 'proxy' variables.".
- Solar_variation label "Aktywność słoneczna".
- Solar_variation label "Fluttuazioni solari".
- Solar_variation label "Solar variation".
- Solar_variation label "Sonnenaktivität".
- Solar_variation label "Variación solar".
- Solar_variation label "Variação solar".
- Solar_variation label "Солнечная активность".
- Solar_variation label "نشاط شمسي".
- Solar_variation label "太阳活动".
- Solar_variation label "太陽変動".
- Solar_variation sameAs Sluneční_aktivita.
- Solar_variation sameAs Sonnenaktivität.
- Solar_variation sameAs Variación_solar.
- Solar_variation sameAs Variasi_Matahari.
- Solar_variation sameAs Fluttuazioni_solari.
- Solar_variation sameAs 太陽変動.
- Solar_variation sameAs Aktywność_słoneczna.
- Solar_variation sameAs Variação_solar.
- Solar_variation sameAs m.01rnnt.
- Solar_variation sameAs Q744654.
- Solar_variation sameAs Q744654.
- Solar_variation sameAs Solar_variation.
- Solar_variation wasDerivedFrom Solar_variation?oldid=605269218.
- Solar_variation depiction Solar-cycle-data.png.
- Solar_variation isPrimaryTopicOf Solar_variation.
