Number of Winter Precipitation Days Reconstructed from Southwestern Tree Rings
نویسندگان
چکیده
منابع مشابه
Chihuahua (Mexico) winter-spring precipitation reconstructed from tree-rings, 1647–1992
The state of Chihuahua lies in an arid to semiarid zone in the NW central plain of Mexico. Its agricultural economy is highly vulnerable to frequent droughts. In this study, we reconstruct winter-spring precipitation from 1647–1992 using 6 earlywood width chronologies of Douglas fir from around Chihuahua. The tree-ring data explain 56% of the winter-spring precipitation variance in a linear reg...
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Both algorithms were applied to an 8000-year long time series of annual precipitation that was reconstructed from tree rings in the southwestern USA. One of the algorithms is the scanning t-test, which detects significant changes in subseries means (the first center moments) on various time scales. Another is the scanning F -test, which detects significant changes in subseries variances (the se...
متن کاملMulti-century variability in the Pacific North American circulation pattern reconstructed from tree rings
We here present a reconstruction (1725–1999) of the winter Pacific North American (PNA) pattern based on three winter climate sensitive tree ring records from the western USA. Positive PNA phases in our record are associated with warm phases of ENSO and PDO and the reorganization of the PNA pattern towards a positive mode is strongest when ENSO and PDO are in phase. Regime shifts in our PNA rec...
متن کاملMillennium-long summer temperature variations in the European Alps as reconstructed from tree rings
This paper presents a reconstruction of the summer temperatures over the Greater Alpine Region (44.05– 47.41 N, 6.43–13 E) during the last millennium based on a network of 38 multi-centennial larch and stone pine chronologies. Tree ring series are standardized using an Adaptative Regional Growth Curve, which attempts to remove the age effect from the low frequency variations in the series. The ...
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ژورنال
عنوان ژورنال: Journal of Climate
سال: 1997
ISSN: 0894-8755,1520-0442
DOI: 10.1175/1520-0442(1997)010<2663:nowpdr>2.0.co;2