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| Titel |
Modeling of water stable isotopes in the ECHAM6 atmospheric general circulation model: current status and perspectives |
| VerfasserIn |
Alexandre Cauquoin, Martin Werner, Gerrit Lohmann |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250147915
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| Publikation (Nr.) |
 EGU/EGU2017-12132.pdf |
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| Zusammenfassung |
| We present here the first results for present-day conditions of the ongoing implementation of
water stables isotopes in the latest version of the ECHAM atmospheric general
circulation model, ECHAM6, enhanced by the JSBACH interactive land surface scheme
(ECHAM6-wiso). Major changes with respect to its predecessor ECHAM5 have to do with
the treatment of shortwave radiative transfer, the development of a new surface
albedo representation, a new aerosol climatology, the height of the model top, and
a more complex representation of the land surface [1]. Besides, a new five-layer
soil hydrology scheme can be used instead of the single soil moisture reservoir in
ECHAM5/JSBACH [2]. Our first analyses of the ECHAM6-wiso results concentrate on a
detailed comparison to the previous model release, ECHAM5-wiso, and potential
improvements in simulating the water stable isotopes signal due to overall model
enhancements.
This study represents the first step of the incorporation of water stable isotope tracers in all
components of the fully coupled Earth system model MPI-ESM. The project is part of the
PalMod initiative ("Paleo Modelling: A national paleo climate modelling initiative"), funded
by the German Federal Ministry of Education and Science (BMBF).
[1] Stevens et al., 2013, JAMES, 5, 146–172.
[2] Hagemann and Stacke, 2015, Clim. Dyn., 44, 1731–1750. |
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