1) Last 1000 Years: Mann et al., 1999 Northern Hemisphere Temperature Reconstruction for the Past Millennium. LAST UPDATE: 3/1999 (Original Receipt by WDCA Paleo). IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 1999-014 SUGGESTED DATA CITATION: Michael E. Mann, Raymond S. Bradley, and Malcolm K. Hughes, 1999, Northern Hemisphere Temperature Reconstruction for the Past Millennium, IGBP PAGES/World Data Center-A for Paleoclimatology Data Contribution Series # 1999-014. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. The data are published at http://www.ngdc.noaa.gov/paleo/. 2) Projections (2000 - 2100) Data from IPCC - Intergovernmental Panel on Climate Change (2001): Climate change 2001: the scientific basis.
See further: Mann, M.E., Bradley, R.S. and Hughes, M.K. (1999): 'Northern hemisphere temperatures during the past millennium: inferences, uncertainties, and limitations', Geophysical Research Letters, 26 (the last hundred years); IPCC (2001a): Climate change 2001: The scientific basis, Cambridge University Press, Cambridge, UK (projection for the next hundred years).
Be careful when buying for your garden. People are one of the main introducers of invasive species, especially flora. Many of the invasive species have been introduced for ornamental purposes. Do put an extra effort in finding out whether the plant you want is native to your environment.
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