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- Ahmed, Moinuddin, et al.
(författare)
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Continental-scale temperature variability during the past two millennia
- 2013
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Ingår i: Nature Geoscience. - 1752-0894 .- 1752-0908. ; 6:5, s. 339-346
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Tidskriftsartikel (refereegranskat)abstract
- Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.
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- Charpentier Ljungqvist, Fredrik, 1982-
(författare)
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1600-talet – det kallaste århundradet
- 2011
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Ingår i: Sveriges historia : 1600–1721. - Stockholm : Norstedts. - 9789113024400 ; , s. 441-445
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Bokkapitel (populärvet., debatt m.m.)
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3. |
- Charpentier Ljungqvist, Fredrik, 1982-
(författare)
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A new reconstruction of temperature variability in the extra-tropical Northern Hemisphere during the last two millennia
- 2010
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Ingår i: Geografiska Annaler. Series A, Physical Geography. - Oxford : Wiley-Blackwell. - 0435-3676 .- 1468-0459. ; 92A:3, s. 339-351
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Tidskriftsartikel (refereegranskat)abstract
- A new temperature reconstruction with decadal resolution, covering the last two millennia, is presented for the extra-tropical Northern Hemisphere (90–30°N), utilizing many palaeotemperature proxy records never previously included in any large-scale temperature reconstruction. The amplitude of the reconstructed temperature variability on centennial time-scales exceeds 0.6°C. This reconstruction is the first to show a distinct Roman Warm Period c. AD 1–300, reaching up to the 1961–1990 mean temperature level, followed by the Dark Age Cold Period c. AD 300–800. The Medieval Warm Period is seen c. AD 800–1300 and the Little Ice Age is clearly visible c. AD 1300–1900, followed by a rapid temperature increase in the twentieth century. The highest average temperatures in the reconstruction are encountered in the mid to late tenth century and the lowest in the late seventeenth century. Decadal mean temperatures seem to have reached or exceeded the 1961–1990 mean temperature level during substantial parts of the Roman Warm Period and the Medieval Warm Period. The temperature of the last two decades, however, is possibly higher than during any previous time in the past two millennia, although this is only seen in the instrumental temperature data and not in the multi-proxy reconstruction itself. Our temperature reconstruction agrees well with the reconstructions by Moberg et al. (2005) and Mann et al. (2008) with regard to the amplitude of the variability as well as the timing of warm and cold periods, except for the period c. AD 300–800, despite significant differences in both data coverage and methodology.
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7. |
- Charpentier Ljungqvist, Fredrik, 1982-
(författare)
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Female Shame, Male Honor : The Chastity Code in Juan Luis Vives’ De institutione feminae Christianae
- 2012
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Ingår i: Journal of Family History. - : SAGE Publications. - 0363-1990 .- 1552-5473. ; 37:2, s. 139-154
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Tidskriftsartikel (refereegranskat)abstract
- In the light of some key concepts from the chastity codes described by anthropological research for honor societies in the Mediterranean region and the Middle East, this article examines the chastity code for women that the Spanish Renaissance humanist Juan Luis Vives (1492/3–1540) advocated in his work De institutione feminae Christianae (1524/1538). Aspects, such as gender order, restrictions on women’s physical freedom of movement, regulations and instructions regarding women’s clothing, and various rules for women’s outward conduct, are studied. It can be established that Vives advocated a very traditional, patriarchal view of women, exhorting very strict gender segregation and female seclusion. He prescribed very tight restrictions on women’s freedom, with a view to controlling female sexuality, an aspect of Vives that previous research has not paid full attention to.
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9. |
- Charpentier Ljungqvist, Fredrik, 1982-
(författare)
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Jakten på kung Magnus
- 2013
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Ingår i: Populär Historia. - 1102-0822. ; :11, s. 30-35
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Tidskriftsartikel (populärvet., debatt m.m.)
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10. |
- Charpentier Ljungqvist, Fredrik, 1982-
(författare)
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Klimat, missväxt och extremt väder 1830–1920
- 2012
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Ingår i: Sveriges historia : 1830–1920. - Stockholm : Norstedts Förlag. - 9789113024424 ; , s. 289-292
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Bokkapitel (populärvet., debatt m.m.)
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