I constructed a temperature history for different parts of the world from 169\ud glacier length records. Using a first-order theory of glacier dynamics, I related\ud changes in glacier length to changes in temperature. The derived temperature\ud histories are fully independent of proxy and instrumental data used in earlier\ud reconstructions. Moderate global warming started in the middle of the 19th\ud century. The reconstructed warming in the first half of the 20th century is\ud 0.5 kelvin. This warming was notably coherent over the globe. The warming\ud signals from glaciers at low and high elevations appear to be very similar
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.