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Comparison of radionuclide-based solar reconstructions and sunspot observation the last 2000 years

Artursson, Christopher LU (2014) In Dissertations in Geology at Lund University GEOL01 20141
Department of Geology
Abstract
The sun is an important reason to why there is life on earth. To be able to predict future solar activity it is important to uncover past solar activity and its cyclicity. This thesis investigates the solar activity throughout the past 2000-years to the beginning of 21th century. Diagrams which contain relevant data from radionuclide and sunspot records have been constructed to get a better overview of solar activity variations during the investigated period. They show a trend of increasing span in solar maxima and minima from year 0 to present.
Correlation analysis between radionuclide records and naked sunspot number (sunspot archives) resulted in bad correlation. This in contrast to the results when radionuclide records were... (More)
The sun is an important reason to why there is life on earth. To be able to predict future solar activity it is important to uncover past solar activity and its cyclicity. This thesis investigates the solar activity throughout the past 2000-years to the beginning of 21th century. Diagrams which contain relevant data from radionuclide and sunspot records have been constructed to get a better overview of solar activity variations during the investigated period. They show a trend of increasing span in solar maxima and minima from year 0 to present.
Correlation analysis between radionuclide records and naked sunspot number (sunspot archives) resulted in bad correlation. This in contrast to the results when radionuclide records were correlated to GSN (Group sunspot numbers) data based on telescope observations, which resulted in a better correlation. The conclusion is the naked eye sunspot record is very difficult to use as a primary source for estimating past solar activity, apart from a few periods with a high amount of observations. (Less)
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author
Artursson, Christopher LU
supervisor
organization
alternative title
En jämförelse mellan radionuklid-baserade solrekonstruktioner och solfläck observationer de senaste 2000 åren
course
GEOL01 20141
year
type
M2 - Bachelor Degree
subject
keywords
solar reconstruction, radionuclide, sunspot, correlation, analysis
publication/series
Dissertations in Geology at Lund University
report number
390
language
English
id
4461042
date added to LUP
2014-06-12 09:52:07
date last changed
2016-06-09 04:08:40
@misc{4461042,
  abstract     = {The sun is an important reason to why there is life on earth. To be able to predict future solar activity it is important to uncover past solar activity and its cyclicity. This thesis investigates the solar activity throughout the past 2000-years to the beginning of 21th century. Diagrams which contain relevant data from radionuclide and sunspot records have been constructed to get a better overview of solar activity variations during the investigated period. They show a trend of increasing span in solar maxima and minima from year 0 to present. 
Correlation analysis between radionuclide records and naked sunspot number (sunspot archives) resulted in bad correlation. This in contrast to the results when radionuclide records were correlated to GSN (Group sunspot numbers) data based on telescope observations, which resulted in a better correlation. The conclusion is the naked eye sunspot record is very difficult to use as a primary source for estimating past solar activity, apart from a few periods with a high amount of observations.},
  author       = {Artursson, Christopher},
  keyword      = {solar reconstruction,radionuclide,sunspot,correlation,analysis},
  language     = {eng},
  note         = {Student Paper},
  series       = {Dissertations in Geology at Lund University},
  title        = {Comparison of radionuclide-based solar reconstructions and sunspot observation the last 2000 years},
  year         = {2014},
}