Reconstruction of precipitation in Morocco since 1100 A.D. based on Cedrus atlantica tree-ring widths
(1990) Quaternary Research — Vol. 33, n° 3, p. 337-351 (1990)
Files
pdfdocument.pdf
Restricted Access - Adobe PDF
- 1.03 MB
Details
- Authors
- Abstract
- Annual (October through September) precipitation from 1100 A.D. to modern times is reconstructed for Morocco, using Cedrus atlantica (Endl.) Carriere tree-ring chronologies. Both multiple regression on principal components and the bootstrap method are used to calibrate tree-ring width with precipitation; precipitation variation is reconstructed for three climatically distinct areas: the humid, subhumid, and arid regions of Morocco. A series of successive wet and dry periods is identified for the past 1000 years; the maximum length of the 13 dry periods (during which precipitation was at least 1 sigma below normal) is six years. Twenty-one years are identified during which precipitation fell more than 2 sigma below normal. There is no significant correspondence in climatic variation in Morocco, Europe, and the Sahel during this time period.
- Affiliations
Citations
Till, C., & Guiot, J. (1990). Reconstruction of precipitation in Morocco since 1100 A.D. based on Cedrus atlantica tree-ring widths. Quaternary Research, 33(3), 337-351. https://doi.org/10.1016/0033-5894(90)90060-X (Original work published 1990)