The Maunder Minimum
@article{Eddy1976TheMM, title={The Maunder Minimum}, author={John Allen Eddy}, journal={Science}, year={1976}, volume={192}, pages={1189 - 1202} }
zero. In contrast, in the years around a sunspot maximum there is seldom a day when a number of spots cannot be seen, and often hundreds are present. Past counts of sunspot number are readily available from the year 1700 (3), [m and workers in solar and terrestrial studies often use the record as though it were of of uniform quality. In fact, it is not. Thus it is advisable, from time to time, to
1,697 Citations
THE MAUNDER MINIMUM IS NOT AS GRAND AS IT SEEMED TO BE
- Physics
- 2015
The Maunder Minimum (MM), which occurred between 1645 and 1715, is mainly known as an almost spotless period on the Sun. We analyze the nominal number of sunspot groups for each observer…
The revival of solar activity after Maunder minimum in reports and observations of E. Manfredi
- Physics
- 1982
We present information, published here for the first time, concerning observations of sunspots made at the beginning of the XVIIIth century. The information has been taken from specola's archives in…
How Deep Was the Maunder Minimum?
- Physics
- 2016
One of the most enigmatic features of the solar history is the Maunder minimum (MM). We analyze reports of solar observers from the group-sunspot-number database. Particular attention is given to…
Analyzing Solar Cycles
- PhysicsScience
- 2011
The recent longer-than-usual minimum in sunspot activity indicate that the authors are heading for an extended period of solar inactivity, which could pose radiation hazards for astronauts and aircraft crew.
Sunspot and Auroral Activity During Maunder Minimum
- Physics
- 2000
The extremely low sunspot activity during the period of the Maunder minimum 1645–1715 was confirmed by group sunspot numbers, a new sunspot index constructed by Hoyt and Schatten (1998a,b). Neither…
Aurorae, Sunspots and Weather, Mainly Since A.D. 1200
- Physics
- 1980
Auroral records received for the Spectrum of Time project were used in 1955 to estimate sunspot activity and the dates maxima and minima back to 649 B.C. An additional set of rules has been developed…
Solar cycles during the Maunder minimum
- Physics
- 2007
We have obtained new consistent versions of the 400-yr time series of the Wolf sunspot number W, the sunspot group number G, and the total sunspot area S (or the total sunspot magnetic flux Φ). We…
An Active Sun Throughout the Maunder Minimum
- Physics
- 1998
Measurements of 10Be concentration in the Dye 3 ice core show that magnetic cycles persisted throughout the Maunder Minimum, although the Sun's overall activity was drastically reduced and sunspots…
An Upper Limit on Sunspot Activity During the Maunder Minimum
- Physics
- 2004
We have estimated the upper and lower limits of sunspot activity, in terms of active day fraction during the Maunder minimum (1645–1710), using raw information on individual daily observations (Hoyt…
THE MAUNDER MINIMUM AND SOLAR ACTIVITY
- Physics
- 2006
The extension of sunspot number series and auroral observations backward in time is of considerable interest for dynamo theory, solar activity and climate research. It was known that the Maunder…
References
SHOWING 1-10 OF 56 REFERENCES
The sunspot cycle, 649 B.C. to A.D. 2000
- Physics
- 1955
Annual sunspot numbers since 1700 and the known maxima and minima since 1610 show a similarity of pattern from century to century. This suggests that the mean cycle is approximately 11-1/9 years.
…
The Geographic Incidence of Aurora and Magnetic Disturbance, Northern Hemisphere
- Physics
- 1944
Fritz [see 7 of “References” at end of paper] in a famous memoir published in 1881 discussed the frequency and characteristics of aurora observed in the Northern Hemisphere during the years 1700 to…
Chinese Records of Sunspots and Aurorae in the Fourth Century A. D
- Physics
- 1967
The Chinese did not realize that the activity on the sun was often associated with the northern lights in the terrestrial atmosphere; indeed, even when the two phenomena correspond there is usually a…
The sunspot‐cycle before 1750
- Physics
- 1947
Sunspot-numbers since 1749 form [Wolf, 1945] a long and reliable series of indices with an obvious but unexplained 11-year cycle (see Fig. 1). Harmonic analysis has hitherto proved unsuccessful in…
Volcanic Dust, Sunspots, and Temperature Trends
- Environmental Science, PhysicsScience
- 1975
The extent to which two often proposed external causes of climatic change, volcanic dust and variations in the solar constant correlated with variable sunspot activity, might account for the general…
VARIATIONS IN RADIOCARBON CONCENTRATION AND SUNSPOT ACTIVITY
- Physics, Environmental Science
- 1961
Variations in cosmic-ray intensities will produce variations in C/sup 14/ production in the atmosphere. A comparison is made between variations in sunspot activity and fluctuations in C/sup 14/…
Variation in Atmospheric Carbon-14 Activity Relative to a Sunspot-Auroral Solar Index
- Environmental Science, PhysicsScience
- 1967
Radiocarbon activity was negatively correlated (P≤.01) with a sunspot-auroral index during 25 designated solar activity periods from 129 B.C. to A.D. 1964. Change in carbon-14 activity during these…
Solar-Climate Relationships in the Post-Pleistocene
- Environmental ScienceScience
- 1971
The most conspicuous climatic aberration of the past two millennia was the temperature decline and glacial advance of the A.D. 1550 to 1900 period and there is evidence from both the post-Pleistocene glacial record and from oxygen-18 analysis that such an interval recurred at cyclic periods of around 2600 years.
LATE AND POSTGLACIAL CLIMATIC FLUCTUATIONS AND THEIR RELATIONSHIP TO THOSE SHOWN BY THE INSTRUMENTAL RECORD OF THE PAST 300 YEARS
- Environmental Science
- 1961
I propose in this paper to compare the evidence we have with regard to the characteristics of the smaller climatic fluctuations of recent centuries with that forthcoming with regard to late and…
Ancient aurorae seen in Japan
- Physics
- 1956
Historical data of auroral phenomena seen from Japan since the seventh century are summarized in this communication. Among several reference-books1 used, the chief was Nippon Kisho-Shiryo…