Tree-ring carbon isotope data and drought maps
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Drought reconstructions for the continental United States.
Journal of Climate 12: 1145-1162.
Francey, R.J. and Farquhar, G.D., 1982.
An explanation of 13C/12C variations in tree rings.
Nature 297: 28-31.
Friedl, M., McIver, D.K., Hodges, J.C.F., Zhang, X.Y., Muchoney, D., Strahler, A.H., Woodcock, C.E., Gopal, S., Schneider, A., Cooper, A., Baccini, A., Gao, F. and Schaaf, C., 2002.
Global land cover mapping from MODIS: algorithms and early results.
Remote Sensing of Environment 83 (1): 287-302.
Dupouey, J.-L., Leavitt, S., Choisnel, E. and Jourdain, S., 1993.
Modelling carbon isotope fractionation in tree rings based on effective evapotranspiration and soil water status.
Plant, Cell and Environ. 16: 939-947.
Hansen, M.C., DeFries, R.S., Townshend, J.R.G., Dimiceli, C., Carroll, M. and Sohlberg, R., 2003.
Global eprcent tree cover at a spatial resolution of 500 meters: First results of the MODIS vegetation continuous fields algorithm.
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Hemming, D.L., Switsur, V.R., Waterhouse, J.S., Heaton, T.H.E. and Carter, A.H.C., 1998.
Climate variation and the stable carbon isotope composition of tree ring cellulose:
an intercomparison of Quercus robur, Fagus sylvatica and Pinus silvestris.
Tellus 50B: 25-33.
Lawrence, P.J. and Chase, T.N., 2006.
Representing a MODIS consistent land surface in the community land model (CLM 3.0).
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Leavitt, S. W., 1993.
Seasonal 13C/12C changes in tree rings: species and site coherence, and a possible drought influence.
Can. J. For. Res. 23: 210-218.
Leavitt, S.W. and Long, A., 1985.
The global biosphere as net CO2 source or sink: evidence from carbon isotopes in tree rings.
In Planetary Ecology, Caldwell, D.E., Brierly, J.A. and Brierly, C.L., eds.
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Leavitt, S.W. and Long, A., 1986.
Trends of 13C/12C ratios in pinyon pine tree rings of the American southwest and the global carbon cycle.
Radiocarbon 28: 376-382.
Leavitt, S.W. and Long, A. 1988.
Stable carbon isotope chronologies from trees in the southwestern United States.
Global Biogeochemical Cycles 2: 189-198.
Leavitt, S.W. and Long, A. 1989a.
Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings.
Water Resources Bulletin 25: 341-347.
Leavitt, S.W. and Long, A., 1989b.
The atmospheric d13C record as derived from 56 pinyon trees at 14 sites in the southwestern U.S.
Radiocarbon 31: 469-474.
Leavitt, S. W., W. E. Wright, and Long, A., 2002.
Spatial expression of ENSO, drought and summer monsoon in seasonal d13C of ponderosa pine tree rings in southern Arizona and New Mexico.
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Ramankutty, N. and Foley, J.A., 1999.
Estimating Historical Changes in Global Land Cover: Croplands from 1700 to 1992.
Global Biogeochemical Cycles 13 (4): 997-1027.
Saurer, M. and Siegenthaler, U. 1989.
13C/12C ratios in tree are sensitive to relative humidity.
Dendrochronologia 7: 9-13.
Saurer, M., Siegenthaler, U. and Schweingruber, F., 1995.
The climate-carbon isotope relationship in tree rings and the significance of site conditions.
Tellus 47B: 320-330.
Siebert, S., Doll, P., Feick, S., and Hoogeveen, 2006.
Global map of irrigated areas version 4.0,
Johann Wolfgang Goethe University, Frankfurt am Main, Germany
Food and Agriculture Organization of the United Nations, Rome, Italy.
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