Reconstructing the glacier contribution to sea-level rise back to 1850 J. Oerlemans1, M. Dyurgerov2, and R. S. W. van de Wal1 1Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, Utrecht 3584CC, The Netherlands 2Department of Physical Geography and Quaternary Geology, Stockholm University, 10654 Stockholm, Sweden
Abstract. We present a method to estimate the glacier contribution to sea-level rise
from glacier length records. These records form the only direct evidence of
glacier changes prior to 1946, when the first continuous mass-balance
observations began. A globally representative length signal is calculated
from 197 length records from all continents by normalisation and averaging
of 14 different regions. Next, the resulting signal is calibrated with
mass-balance observations for the period 1961–2000. We find that the glacier
contribution to sea level rise was 5.5±1.0 cm during the period 1850–2000 and 4.5±0.7
cm during the period 1900–2000.
Citation: Oerlemans, J., Dyurgerov, M., and van de Wal, R. S. W.: Reconstructing the glacier contribution to sea-level rise back to 1850, The Cryosphere, 1, 59-65, doi:10.5194/tc-1-59-2007, 2007.