Results 191 to 200 of about 1,269 (230)

A Revisit of Large-Scale Patterns in Middle Stratospheric Circulation Variations. [PDF]

Entropy (Basel)
Tao N, Chen X, Xie F, Zhang Y, Xia Y, Ma X, Huang H, Wang H.   +7 more
europepmc   +1 more source

Energetic neutral atom imaging reveals nearly 11-year cycle of the ring current of Saturn. [PDF]

Nat Commun
Li Y, Yue C, Sun Y, Jia X, Zong Q, Zhou X.   +5 more
europepmc   +1 more source

A deep learning framework for instrument-to-instrument translation of solar observation data. [PDF]

Nat Commun
Jarolim R, Veronig AM, Pötzi W, Podladchikova T.   +3 more
europepmc   +1 more source

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Synchronization of Sunspot Numbers and Sunspot Areas

Solar Physics, 2009
Sunspot activity is usually described by either sunspot numbers or sunspot areas. The smoothed monthly mean sunspot numbers (SNs) and the smoothed monthly mean areas (SAs) in the time interval from November 1874 to September 2007 are used to analyze their phase synchronization.
K. J. Li, P. X. Gao, L. S. Zhan
openaire   +1 more source

Investigation of Sunspot Area Varying with Sunspot Number

Solar Physics, 2016
The statistical relationship between sunspot area (SA) and sunspot number (SN) is investigated through analysis of their daily observation records from May 1874 to April 2015. For a total of 1607 days, representing $3~\%$
K. J. Li, F. Y. Li, J. Zhang, W. Feng
openaire   +1 more source

Group Sunspot Numbers: Sunspot Cycle Characteristics

Solar Physics, 2002
We examine the "Group" sunspot numbers constructed by Hoyt and Schatten to determine their utility in characterizing the solar activity cycle. We compare smoothed monthly Group Sunspot Numbers to Zurich (International) Sunspot Numbers, 10.7-cm radio flux, and total sunspot area.
David H. Hathaway, Robert M. Wilson, Edwin J. Reichmann   +2 more
openaire   +1 more source

Relationship between sunspot numbers during years of sunspot maximum and sunspot minimum

Solar Physics, 1980
A correlation analysis shows that the sunspot numbers at the peaks of the last eight solar cycles are well-correlated with the sunspot numbers in heliolatitudes 20°–40° (specially in the southern hemisphere) occurring in the solar minimum years immediately preceding the solar maximum years.
R. P. Kane, N. B. Trivedi
openaire   +1 more source

The Schwabe and Gleissberg Periods in the Wolf Sunspot Numbers and the Group Sunspot Numbers

Solar Physics, 2005
Three wavelet functions: the Morlet wavelet, the Paul wavelet, and the DOG wavelet have been respectively performed on both the monthly Wolf sunspot numbers (R-z) from January 1749 to May 2004 and the monthly group sunspot numbers (R-g) from June 1795 to December 1995 to study the evolution of the Gleissberg and Schwabe periods of solar activity.
K. J. Li, P. X. Gao, T. W. Su
openaire   +1 more source