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  2. List of solar cycles - Wikipedia

    en.wikipedia.org/wiki/List_of_solar_cycles

    The start of solar cycle 25 was declared by SIDC on September 15, 2020 as being in December 2019. [9] This makes cycle 24 the only "11-year solar cycle" to have lasted precisely 11 years. Details of cycles 1 to 25

  3. Solar minimum - Wikipedia

    en.wikipedia.org/wiki/Solar_minimum

    Solar minimum is the regular period of least solar activity in the Sun's 11-year solar cycle. During solar minimum, sunspot and solar flare activity diminishes, and often does not occur for days at a time. On average, the solar cycle takes about 11 years to go from one solar minimum to the next, with duration observed varying from 9 to 14 years.

  4. Solar cycle - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle

    The solar cycle variation of 0.1% has small but detectable effects on the Earth's climate. [100] [101] [102] Camp and Tung suggest that solar irradiance correlates with a variation of 0.18 K ±0.08 K (0.32 °F ±0.14 °F) in measured average global temperature between solar maximum and minimum. [103]

  5. Solar cycle 25 - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle_25

    Solar cycle 25 is the current solar cycle, the 25th since 1755, when extensive recording of solar sunspot activity began. It began in December 2019 with a minimum smoothed sunspot number of 1.8. [2] It is expected to continue until about 2030. [3] [4]

  6. Solar activity and climate - Wikipedia

    en.wikipedia.org/wiki/Solar_activity_and_climate

    The updated figure (right) shows the variations and contrasts solar cycles 14 and 24, a century apart, that are quite similar in all solar activity measures (in fact cycle 24 is slightly less active than cycle 14 on average), yet the global mean air surface temperature is more than 1 degree Celsius higher for cycle 24 than cycle 14, showing the ...

  7. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    During the solar cycle's declining phase, energy shifts from the internal toroidal magnetic field to the external poloidal field, and sunspots diminish in number and size. At solar-cycle minimum, the toroidal field is, correspondingly, at minimum strength, sunspots are relatively rare, and the poloidal field is at its maximum strength.

  8. Category:Solar cycles - Wikipedia

    en.wikipedia.org/wiki/Category:Solar_cycles

    Maunder Minimum (17 P) Pages in category "Solar cycles" The following 31 pages are in this category, out of 31 total. ... Solar cycle 1; Solar cycle 2; Solar cycle 3 ...

  9. Dalton Minimum - Wikipedia

    en.wikipedia.org/wiki/Dalton_Minimum

    The Dalton Minimum was a period of low sunspot count, representing low solar activity, named after the English meteorologist John Dalton, lasting from about 1790 to 1830 [1] or 1796 to 1820, [2] corresponding to the period solar cycle 4 to solar cycle 7. While the Dalton Minimum is often compared with the Maunder Minimum, its sunspot number was ...