Does the Sun contribute to Climate Change?

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Variations in the UV and climate change• The North Atlantic Oscillation isassumed to be affected by naturalvariations (e.g. solar activity).• NAO-index is important for theclimate in Europe• NAO can be reconstructed back to1658 from pressure, temperatruesand percipitation.• Climate models suggest that lowsolar activity between 1400-1700altered the atmospheric circulation.• A “weaker” Sun reduced thewesterly winds and cooled Europa.Shindell et al. Science, v294, 2149, 2001tirsdag 1. november 1120
Cosmic rays and climate - is there a link?• GCR seeds low clouds (Svensmark + + +)• The GCR affects the electrical conductivity of the atmosphere through ionproduction (Tinsley +++)Eg. Ram, Stoltz and Tinsley, EOS, 90, 44, 2009tirsdag 1. november 1121
Page 1: Does the Sun contribute to Climate
Page 7 and 8: The electromagnetic spectrumtirsdag
Page 9: The dynamic Sun9tirsdag 1. november
Page 12 and 13: Total Solar Irradiance (TSI)12tirsd
Page 14 and 15: Reconstructing solar irradianceDiff
Page 16 and 17: Reconstructed temperatures• The c
Page 18 and 19: Total Solar Spectral Irradiance (TS
Page 22 and 23: CGR - if they affect cloudsMore act
Page 24 and 25: Are there short term effects from G
Page 26 and 27: CLOUD eksperimentetHowever, in the
Page 28 and 29: GCR - climate effects• Siberian c
Page 30 and 31: Status of the Earth´s temperatureH
Page 32 and 33: Dim Sun causes cold winters in Euro
Page 34 and 35: Different solar and anhtropogenic f
Page 36 and 37: What is happening with the Sun?A mi
Page 38: Natural climate cyclesPacific Decad
Page 41 and 42: Natural climate cyclesOle Humlumtir
Page 43: tirsdag 1. november 11Hard-cover, E

Does the Sun contribute to Climate Change?

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