Yamal 2009 data

Site measurements and statistics

For each site:

• Corr - Shows a summary of the quality of crossdating, largely in the form of a correlation matrix of highpass filtered inter-series correlations for the data at the site, along with several between-site correlations and a measure of the overall within-site crossdating 'signal'. The program generating these cross-dating reports employs the same default options as used in COFECHA (Holmes 1986).
• RAW - Contains measurement data for each tree or each core in Tucson format.
• Stats - Shows statistics for each tree or core at the appropriate site.
• Figure in final column shows the distribution of trees over time for the appropriate site.

LIVE	LIVE_Corr	LIVE_RAW	LIVE_Stats
JAH	JAH_Corr	JAH_RAW	JAH_Stats	Yamal_JAH_Corr	Yamal_JAH_raw	Yamal_JAH_Stats
POR	POR_Corr	POR_RAW	POR_Stats	Yamal_POR_Corr	Yamal_POR_raw	Yamal_POR_Stats
YAD	YAD_Corr	YAD_RAW	YAD_Stats	Yamal_YAD_Corr	Yamal_YAD_raw	Yamal_YAD_Stats
KHAD	KHAD_Corr	KHAD_RAW	KHAD_Stats	Yamal_KHAD_Corr	Yamal_KHAD_raw	Yamal_KHAD_Stats
AD				Yamal_AD_Corr	Yamal_AD_raw	Yamal_AD_Stats
All				Yamal_All_Corr	Yamal_All_raw	Yamal_All_Stats
SF				Yamal_SF_Corr	Yamal_SF_raw	Yamal_SF_Stats

Yamal_All chronology indices

	Individual-tree index series produced as fractional deviations from a single "all-site" (i.e. Yamal_All) RCS curve. The equivalent indices (from the same trees but standardised with different RCS curves) made up the modern parts of the Briffa (2000) and Briffa et al. (2008) chronologies. Note that the data for the 5 uppermost series are those not selected for substitution in McIntyre's analysis and the raw measurements, therefore, are included for convenience among the "sub-fossil" data common to all chronologies except those based only on local site data (i.e. for POR, YAD, JAH and KHAD).
	The individual-tree index series for the JAH site produced as fractional deviations from a single "all-site" (i.e. Yamal_All) RCS curve. Note that not all trees show the relative increase in growth in the late 20th century that is characteristic of the data set as a whole.
	The individual-tree index series for the POR site produced as fractional deviations from a single "all-site" (i.e. Yamal_All) RCS curve.
	The individual-tree index series for the YAD site produced as fractional deviations from a single "all-site" (i.e. Yamal_All) RCS curve. Note that not all trees show the same relative increase in growth in the late 20th century that is characteristic of the data set as a whole.
	The individual-tree index series for the KHAD site produced as fractional deviations from a single "all-site" (i.e. Yamal_All) RCS curve. Note that the gaps in some series occur because these ring-width data were acquired from densitometric measurements of sample cores and not from direct measurement of ring width.

Miscellaneous RCS and chronology data

For files with "crn" suffix the data are in Tucson Index format. The header lines contain a brief description of the standardisation options used and the meaning of the descriptors are:

RCM = Mean ring width by age RCS = Smoothed RCS curve STD = Standard chronology CSM = Smooth chronology CSD = Chronology standard deviation SPL = High-pass filtered chronology

Additional tree-ring data from this region

Additional tree-ring width data reported by Vaganov, E.A., Shiyatov, S.G., and Mazepa, V.S. (1996: Dendroclimatic study in Ural-Siberian Subarctic. Novosibirsk: Nauka, 246 pp., in Russian) are available here though they have not been used in the Yamal sensitivity studies described in these web pages.