caa a22 4500 445345926 CHVBK 20180317142828.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s11207-011-9733-6 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9733-6 Is Cycle 24 the Beginning of a Dalton-Like Minimum? [Elektronische Daten] [M. Nielsen, H. Kjeldsen] The unexpected development of cycle 24 emphasizes the need for a better way to model future solar activity. In this article, we analyze the accumulation of spotless days during individual cycles from 1798 - 2010. The analysis shows that spotless days do not disappear abruptly in the transition toward an active Sun. A comparison with past cycles indicates that the ongoing accumulation of spotless days is comparable to that of cycle 5 near the Dalton minimum and to that of cycles 12, 14, and 15. It also suggests that the ongoing cycle has as much as 20±8 spotless days left, from July 2010, before it reaches the next solar maximum. The last spotless day is predicted to be in December 2012, with an uncertainty of 11 months. This trend may serve as input to the solar dynamo theories. Springer Science+Business Media B.V., 2011 Cycle 24 nationallicence Dalton minimum nationallicence Prediction nationallicence Spotless days nationallicence Nielsen M. Aarhus University, Aarhus, Denmark aut Kjeldsen H. Aarhus University, Aarhus, Denmark aut Solar Physics Springer Netherlands 270/1(2011-05-01), 385-392 0038-0938 270:1<385 2011 270 11207 https://doi.org/10.1007/s11207-011-9733-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9733-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nielsen M. Aarhus University, Aarhus, Denmark aut NATIONALLICENCE 700 1- Kjeldsen H. Aarhus University, Aarhus, Denmark aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 270/1(2011-05-01), 385-392 0038-0938 270:1<385 2011 270 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer