www.millenniumproject.net
Climate proxy data
- far less accurate than meteorological
observations
- decreasing data network back in time
- less information about paleohydrology
than paleotemperature
IPCC 2007, Fig. 6.11
Northern Hemisphere mean
temperature last 1500 years
Mann et al. Science 2009, 326, p.1257, Figs. 1-2
Stockholm winter/spring temperatures
last
500 years
Data: Leijonhufvud et al. Climatic
/media/ces/Moberg_Anders_CES_2010.pdf