HR: 08:45h
AN: PP21D-04    [Abstracts]
TI: Modeling stable water isotopes using the UK Hadley Centre GCM
AU: * Tindall, J
EM: julia.tindall@bristol.ac.uk
AF: BRIDGE, School of Geographical sciences, University Road, University of Bristol, Bristol, BS8 1SS United Kingdom
AU: Valdes, P
EM: P.J.Valdes@bristol.ac.uk
AF: BRIDGE, School of Geographical sciences, University Road, University of Bristol, Bristol, BS8 1SS United Kingdom
AU: Sime, L
EM: lsim@bas.ac.uk
AF: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET United Kingdom
AU: Wolff, E
EM: EWWO@bas.ac.uk
AF: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET United Kingdom
AB: The representation of stable water isotopes in general circulation models (GCM's) is useful for interpreting paleodata and verifying simulations of past climate. Currently a number of GCM's are able to model water isotopes but most GCM's still do not have this facility. The Hadley Centre GCM (HadCM3) is a sophisticated, state-of-the-art, climate model which has been used for many present-day, paleoclimate and future studies, but previously has not included any representation of stable water isotopes. This feature has now been added as part of the ISOMAP (ISOtope calibration and MAPping) study. Here the implementation and simulations of stable water isotopes in HadCM3 will be discussed. Results for present day will be compared with observational datasets and other isotope enabled GCM's. The temporal variability of the modelled isotopes will also be examined and compared to storm track diagnostics.
DE: 1041 Stable isotope geochemistry (0454, 4870)
DE: 1836 Hydrological cycles and budgets (1218, 1655)
DE: 3309 Climatology (1616, 1620, 3305, 4215, 8408)
DE: 3337 Global climate models (1626, 4928)
DE: 3344 Paleoclimatology (0473, 4900)
SC: Paleoceanography and Paleoclimatology [PP]
MN: Fall Meeting 2005