Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jass...25..395c&link_type=abstract
Journal of Astronomy and Space Sciences. Vol. 25, no. 4, 395-404
Astronomy and Astrophysics
Astronomy
Periodicity, Climate Change, Solar Activity
Scientific paper
We explore the linkage between the long term variability of the Sun and earth's climate change by analysing periodicities of time series of solar proxies and global temperature anomalies. We apply the power spectral estimation method named as the periodgram to solar proxies and global temperature anomalies. We also decompose global temperature anomalies and reconstructed total solar irradiance into each local variability components by applying the EMD (Empirical Mode Decomposition) and MODWT MRA (Maximal Overlap Discrete Wavelet Multi Resolution Analysis). Powers for solar proxies at low frequencies are lower than those of high frequencies. On the other hand, powers for temperature anomalies show the other way. We fail to decompose components which having lager than 40 year variabilities from EMD, but both residuals are well decomposed respectively. We determine solar induced components from the time series of temperature anomalies and obtain 39% solar contribution on the recent global warming. We discuss the climate system can be approximated with the second order differential equation since the climate sensitivity can only determine the output amplitude of the signal.
Chang Heon-Young
Cho Il-Hyun
No associations
LandOfFree
Long Term Variability of the Sun and Climate Change does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Long Term Variability of the Sun and Climate Change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long Term Variability of the Sun and Climate Change will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-968375