San Francisco Bay Salinity Reconstruction: Readme File
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              World Data Center for Paleoclimatology, Boulder
                                and 
                   NOAA Paleoclimatology Program
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NOTE: PLEASE CITE ORIGINAL REFERENCES WHEN USING THIS DATA!!!!!

CONTRIBUTOR: David Stahle, University of Arkansas
NAME OF DATA SET: San Francisco Bay Salinity Reconstruction

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-031

SUGGESTED DATA CITATION: Stahle, et al., 2001, 
San Francisco Bay Salinity Reconstruction. 
International Tree-Ring Data Bank.  
IGBP PAGES/World Data Center for Paleoclimatology 
Data Contribution Series #2001-031.
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCE: Stahle, D.W., M.D. Therrell, M.K. Cleaveland, 
D.R. Cayan, M.D. Dettinger and N. Knowles. 2001.  Ancient blue oaks 
reveal human impact on San Francisco Bay salinity.  
Eos, Transactions, American Geophysical Union. 82(12): 141, 144-145.  


Tree-ring standardization reference:
Cook, E.R. 1985. A Time Series Analysis Approach to
Tree-Ring Standardization. PhD dissertation. Tucson:
U. of Arizona. (available from U. Microfilms International
Ann Arbor, MI) 171 p.

LAST UPDATE:  3/2001 (Original receipt by WDC-A Paleo)

GEOGRAPHIC REGION: San Francisco Bay, California USA
PERIOD OF RECORD:  1604-1997 AD

LIST OF FILES: Readme_SFBay_salinity.txt (this file), 
SFBay_Salinity.txt.


DESCRIPTION:
Reconstructed and observed San Francisco Bay (Ft. Point)
salinity (parts/million X 10). Reconstructed from the mean
of five standard chronologies (Cook 1985) of CA blue oak 
(Q. douglasii Hook. and Am.):

1. Clear Lk(CLR) 39.014D, 122.812D, 430m, 1642-1996;
2. American R(AMR) 38.762D, 121.105D, 185m, 1603-1996;
3. Mt. Diablo(DIA) 37.867D, 121.95D, 800m, 1645-1997;
4. Pacheco Pass(PPP) 37.046D, 121.168D, 395m, 1607-1996;
5. Pinnacles Nat Mon(PIN) 36.467D, 121.183, 350m, 1576-1996

Linear regression calibration 1922-52 (missing values 1946, 1948) 
with Jan-July mean salinity. 
Equation:

  YHATsubt=3.455-6.509Xsubt,

where YHATsubt is the estimated Jan-July salinity X 10 for year t, 
and Xsubt is the average tree-ring width for year t.