tree-ring proxy reconstructions are reliable before 1960, tracking closely with the instrumental record and other independent proxies.
tree-ring proxy reconstructions are reliable before 1960, tracking closely with the instrumental record and other independent proxies.
temperature record of the past 1000 years:5
individual proxy records, such as tree ring widths and densities used in dendroclimatology, are calibrated against the instrumental record for the period of overlap.