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Dean, Walter E.; Anderson, Roger Y.; Bradbury, J. Platt; Anderson, David M.

doi:10.1023/a:1016062207440

Cited by 69 publications

(8 citation statements)

References 30 publications

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“…The most prominent, at 90 yr, can be attributed to the 88-yr Gleissberg solar cycle (e.g. Gleissberg, 1944;Stuiver and Braziunas, 1993;Hoyt and Schatten, 1997) that has previously been recorded in several glacial (Anderson and Koopmans, 1963;Vos et al, 1997;Prasad et al, 2004) and interglacial varve time series (Anderson and Koopmans, 1963;Vos et al, 1997;Dean et al, 2002;Brauer et al, 2008). The 25-and 10.5-yr peaks from Dethlingen may correlate to the 22-yr Hale and 11-yr Schwabe solar cycles, respectively (e.g.…”

Section: Solar-cyclicity-like Variabilitymentioning

confidence: 84%

“…The 25-and 10.5-yr peaks from Dethlingen may correlate to the 22-yr Hale and 11-yr Schwabe solar cycles, respectively (e.g. Hoyt and Schatten, 1997) that have also been widely found in Quaternary varve time series of glacial (Anderson, 1961;Anderson and Koopmans, 1963;Vos et al, 1997;Rittenour et al, 2000) and interglacial origin (Anderson, 1961(Anderson, , 1992Anderson and Koopmans, 1963;Zolitschka, 1992;Vos et al, 1997;Livingstone and Hajdas, 2001;Dean et al, 2002;Theissen et al, 2008). The statistically significant expression of all three prominent decadal-scale solar cycles makes the Dethlingen varve record unique because most known varve records only contain evidence for one or two of these cycles, probably because of insufficient sensitivity of each individual lake's sedimentological properties to record the solar magnetic modulation (e.g.…”

Section: Solar-cyclicity-like Variabilitymentioning

confidence: 93%

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Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments

et al. 2011

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Abstract.To unravel the short-term climate variability during Marine Isotope Stage (MIS) 11, which represents a close analogue to the Holocene with regard to orbital boundary conditions, we performed microfacies and time series analyses on a ∼3200-yr-long record of annually laminated Holsteinian lake sediments from Dethlingen, northern Germany. These biogenic varves comprise two sub-layers: a light sub-layer, which is controlled by spring/summer diatom blooms, and a dark sub-layer consisting mainly of amorphous organic matter and fragmented diatom frustules deposited during autumn/winter. Time series analyses were performed on the thickness of the light and dark sub-layers. Signals exceeding the 95 % and 99 % confidence levels occur at periods that are near-identical to those known from modern instrumental data and Holocene palaeoclimatic records. Spectral peaks at periods of 90, 25, and 10.5 yr are likely associated with the 88-, 22-and 11-yr solar cycles, respectively. This variability is mainly expressed in the light sublayer spectra, suggesting solar influence on the palaeoproductivity of the lake. Significant signals at periods between 3 and 5 yr and at ∼6 yr are strongest expressed in the dark sub-layer spectra and may reflect an influence of the El Niño-Correspondence to: A. Koutsodendris (koutsodendris@em.uni-frankfurt.de) Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO) during autumn/winter. Our results suggest that solar forcing and ENSO/NAO-like variability influenced central European climate during MIS 11 similarly to the present interglacial, thus demonstrating the comparability of the two interglacial periods at sub-decadal to decadal timescales.

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Section: Solar-cyclicity-like Variabilitymentioning

confidence: 84%

Section: Solar-cyclicity-like Variabilitymentioning

confidence: 93%

Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments

et al. 2011

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“…However, Elk Lake, a varved lake in Minnesota located on the prairie͞forest boundary, has been extensively studied at century scale for the Holocene record (29) and at subdecadal scale for the last 1,500 years (30)(31)(32). The dominance of planktonic diatom taxa F. crotonensis and Stephanodiscus minutulus over the Holocene record suggests a relatively stable limnology (33).…”

Section: Discussionmentioning

confidence: 99%

Persistent millennial-scale shifts in moisture regimes in western Canada during the past six millennia

Cumming

Laird

Bennett

et al. 2002

Proc. Natl. Acad. Sci. U.S.A.

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Inferences of past climatic conditions from a sedimentary record from Big Lake, British Columbia, Canada, over the past 5,500 years show strong millennial-scale patterns, which oscillate between periods of wet and drier climatic conditions. Higher frequency decadal-to centennial-scale fluctuations also occur within the dominant millennial-scale patterns. These changes in climatic conditions are based on estimates of changes in lake depth and salinity inferred from diatom assemblages in a well dated sediment core. After periods of relative stability, abrupt shifts in diatom assemblages and inferred climatic conditions occur approximately every 1,220 years. The correspondence of these shifts to millennial-scale variations in records of glacial expansion͞recession and ice-rafting events in the Atlantic suggest that abrupt millennial-scale shifts are important to understanding climatic variability in North America during the mid-to late Holocene. Unfortunately, the spatial patterns and mechanisms behind these large and abrupt swings are poorly understood. Similar abrupt and prolonged changes in climatic conditions today could pose major societal challenges for many regions.

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“…For all sites, sediment chronologies are based on 210 Pb dating for the recent sediments and on linear interpolation or, at one site, linear regression between accelerator mass spectrometry radiocarbon dates for older sediments, except at Elk Lake, where annual (varved) layers were used (26). The average temporal resolution of diatom analyses ranged from 5 to 6 years, except for Coldwater Lake (25), which has an average resolution of 10 years.…”

Section: Methodsmentioning

confidence: 99%

Lake sediments record large-scale shifts in moisture regimes across the northern prairies of North America during the past two millennia

Laird

Cumming

Wunsam

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

150

121

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Six high-resolution climatic reconstructions, based on diatom analyses from lake sediment cores from the northern prairies of North America, show that shifts in drought conditions on decadal through multicentennial scales have prevailed in this region for at least the last two millennia. The predominant broad-scale pattern seen at all sites is a major shift in moisture regimes from wet to dry, or vice versa (depending on location), that occurred after a period of relative stability. These large-scale shifts at the different sites exhibit spatial coherence at regional scales. The three Canadian sites record this abrupt shift between anno Domini 500 and 800, and subsequently conditions become increasingly variable. All three U.S. sites underwent a pronounced change, but the timing of this change is between anno Domini 1000 and 1300, thus later than in all of the Canadian sites. The mechanisms behind these patterns are poorly understood, but they are likely related to changes in the shape and location of the jet stream and associated storm tracks. If the patterns seen at these sites are representative of the region, this observed pattern can have huge implications for future water availability in this region. Drought is a recurring natural feature of climate that has had dramatic environmental, economic, and social impacts on modern (1) and ancient (2) civilizations. Decade-to centuryscale episodes of prolonged drought or high rainfall have been recorded from North America in continental archives as diverse as tree rings (3), tree stumps (4), lake sediments (5), and river deposits (6, 7). The prairie region of North America is particularly susceptible to extreme droughts (8). However, few highresolution proxy records of climate exist from the prairies. Tree-ring records on the prairies typically are spatially limited to wooded areas at the periphery of the prairies (9) and temporally limited to, at best, Ϸ500 years (10). Sediments from closed-basin lakes can provide high-temporal-resolution paleoclimatic information from prairie regions for much longer periods.Here we provide evidence from high-resolution (subdecadal to decadal) sediment core records from six lakes on the Canadian and northern U.S. prairies (Fig. 1). All of the sites indicate that shifts in drought regimes have been a prevalent feature of this region, occurring on decadal through multicentennial scales. Inferred changes in climatic conditions over the past two millennia are based on analysis of diatom assemblages preserved in sediment cores, a commonly used technique for tracking past climatic conditions (11). Our focus here is on long-term dynamics and broad-scale similarities among the lake records. This approach is in part undertaken because of the inherent difficulties of comparing short-term dynamics across records constrained by carbon-dated chronologies. Materials and MethodsDiatom Inferences. Diatom remains in sediment cores from six lakes were used to reconstruct variables influenced by climatic conditions. Diatom-inferred salinity estimat...

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Cited by 69 publications

References 30 publications

Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments

Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments

Persistent millennial-scale shifts in moisture regimes in western Canada during the past six millennia

Lake sediments record large-scale shifts in moisture regimes across the northern prairies of North America during the past two millennia

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