Solar cycles and equatorial climates

Schove, D. J.

doi:10.1007/bf01821196

Cited by 23 publications

(13 citation statements)

References 37 publications

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“…Especially the eleven year cycle is found in the tropics. It is effective when the maximum sunspot number lies between 85 and 150 [28]. Koteswaram and Alvi [ 19] observed a periodicity of 8-10 years at some west coast stations of India, Trivandrum and Cochin, showed a negative phase with sunspot numbers.…”

Section: Ten Year Oscillationmentioning

confidence: 99%

Rainfall Variations of Sri Lanka, Part 2: regional gluctuations

Suppiah

Yoshino

1984

Arch. Met. Geoph. Biocl., Ser. B

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SummaryBased on the regional division of another paper [39], the rainfall variations of Sri Lanka have been investigated for the respective regions by power spectrum analysis and filtering methods, making use of data for the period from 1881 to 1980. The 3-4 year periodicity was observed over the entire island, but other cycles differ from region to region. The 13=16 months oscillation arises in Regions A, D and E, which roughly correspond to the Wet Zone and Dry Zone. The I0 and 2 year oscillations emerge in Regions A, B mad C, where the southwest monsoon dominates the fluctuation patterns. In particular, it was confirmed that the quasi-biennial oscillation is not only in Sri Lanka, but also in other low latitude countries. The quasi-five year oscillation is noticed in Regions D and E, where the northeast monsoon influences on the fluctuation patterns. Irregularities in amplitude and in phase changes were noticed in their longer period fluctuation. Zusammenfassung

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Section: Ten Year Oscillationmentioning

confidence: 99%

Rainfall Variations of Sri Lanka, Part 2: regional gluctuations

Suppiah

Yoshino

1984

Arch. Met. Geoph. Biocl., Ser. B

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“…It is certainly present, for example, in the sunspot record itself, and any attempt to refute such presence on the basis of arguments centered on statistical rigor would surely be futile. It is also present in the aurora record published by Schove [52], and in the ENSO history given in Quinn [53] (as shown below). It is also present, apparently, in some of the records provided by Douglass, but not in others.…”

Section: Introductionmentioning

confidence: 92%

“…In addition to relatively short records (for calibration of tree rings with precipitation), Douglass [28] obtained records two thousand years long, from the stumps of Giant Sequoia trees in the Sierra Nevada in California. To get an independent estimate of the length of solar activity periods for that interval, I analyzed the aurora data of Schove [52], CORRELATION WITH SUNSPOTS. …”

Section: Solar Activity Cycles: What Are the Expectations?mentioning

confidence: 99%

“…It is interesting, however, that the variability of oxygen isotope values over the entire time span, within an eleven-year gliding window, has strong cycles at 66, 50.5, 34 and 26, which happens to correspond to 1/3, 1/4, 1/6 and 1/8 of a period near 200 years. Such a period has been proposed as a solar cycle, and is seen in the Schove aurora series [52], as mentioned.…”

Section: Solar Vs Tidal Cyclesmentioning

confidence: 99%

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Discovery of the 5.7-Year Douglass Cycle: A Pioneer’s Quest for Solar Cycles in Tree-Ring Records

Berger¹

2011

TOGEOGJ

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Abstract. The astronomer A.E. Douglass is generally recognized as the founding father of dendrochronology. He studied tree rings in the search for evidence that solar variation (as seen in sunspots) is reflected in climate variation. He was convinced that his quest was successful. Analysis of some of his early data using Fourier decomposition and comparison of tree-ring periodograms with those based on known solar cycles suggests that the cycles he found may not exist or may not be of pure solar origin. The findings here reported suggest a much stronger influence of tides on the tree-ring records than commonly considered. Douglass's great merit as the pioneer of tree-ring dating in archeology and tree-ring-based climatology remains unaffected by the findings here presented.

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“…During this period a terrestrial cycle of 3 yrs was well-developed, apparently associated with "equatorial inflation" in the Eastern Crescent (Eastern Pakistan -New Guinea -South Australia). (Schove 1963;1964; …”

Section: Triennial Cyclesmentioning

confidence: 99%

Meteorological cycles

Schove¹

1972

Journal of Interdisiplinary Cycle Research

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Solar cycles and equatorial climates

Cited by 23 publications

References 37 publications

Rainfall Variations of Sri Lanka, Part 2: regional gluctuations

Rainfall Variations of Sri Lanka, Part 2: regional gluctuations

Discovery of the 5.7-Year Douglass Cycle: A Pioneer’s Quest for Solar Cycles in Tree-Ring Records

Meteorological cycles

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