Solar cycle 24 began on 4 January 2008, with minimal activity until early 2010. The cycle featured a "double-peaked" solar maximum. The first peak reached 99 in 2011 and the second in early 2014 at 101. Cycle 24 ended in December 2019 after 11.0 years.
When was the latest maximum sunspot activity?
When was the most recent year of maximum sunspot activity?
Solar Cycle 24 is the most recently completed solar cycle, the 24th since 1755, when extensive recording of solar sunspot activity began….
| Solar cycle 24 | |
|---|---|
| End date | December 2019 |
| Duration (years) | 11.0 |
| Max count | 81.8 |
| Max count month | April 2014 |
Which year had a sunspot maximum?
An example of a recent sunspot cycle spans the years from the solar min in 1986, when 13 sunspots were seen, through the solar max in 1989 when more than 157 sunspots appeared, on to the next solar min in 1996 (ten years after the 1986 solar min) when the sunspot count had fallen back down to fewer than 9.
What was the last solar maximum?
2014 There was a solar maximum in 2000. In 2006, NASA initially expected a solar maximum in 2010 or 2011, and thought that it could be the strongest since 1958. However, the solar maximum was not declared to have occurred until 2014, and even then was ranked among the weakest on record.
What is the maximum sunspot activity?
Generally speaking this occurs over a period of approximately 11 years, although it can be anything up to 14 or 15 years, and is called the Solar Cycle. During any given Solar Cycle, the number of sunspots rises to a maximum (Solar Maximum) and falls to a minimum (Solar Minimum).
When did solar 25 start?
January 2022 Solar 25 Update (January 2022)
What was the sunspot number in the last maximum?
Cycle 23. Solar cycle 23 lasted 11.6 years, beginning in May 1996 and ending in January 2008. The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 120.8 (March 2000), and the minimum was 1.7.
When was the most recent solar minimum?
Solar minimum is contrasted with the solar maximum, when hundreds of sunspots may occur….Solar minimum and maximum events with approximate dates.
| Event | Start | End |
|---|---|---|
| Maunder Minimum | 1645 | 1715 |
| Dalton Minimum | 1790 | 1820 |
| Modern Maximum | 1914 | 2008 |
| Unspecified | 2008 | present |
Which years were sunspot maximums after the year 1979?
The solar cycle lasted 10.5 years, beginning in March 1976 and ending in September 1986. The maximum smoothed sunspot number (SIDC formula) observed during the solar cycle was 232.9, in December 1979, and the starting minimum was 17.8.