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Towards the time dependent modeling of sediment core data on a global basis
Author(s) -
Heinze Christoph
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013479
Subject(s) - sediment , geology , paleoclimatology , stratigraphy , glacial period , biogeochemical cycle , climatology , oceanography , climate change , paleontology , chemistry , environmental chemistry , tectonics
The procedure for the simulation of a time dependent sediment stratigraphy for 4 different sediment species with a global biogeochemical ocean general circulation model is presented. In this feasibility study, a sediment column for the last 131 kyr was accumulated through use of a variable ocean velocity field (mixed from preindustrial and glacial ocean time slices in a kinematic approach). The biogenic components of sediment are entirely a model product. Artificial sediment cores were “recovered” from the simulated stratigraphy. The approach is the foundation for a systematic comparison of paleoclimate simulations with the sediment record. Through use of adjoint model codes the direct 4‐dimensional data assimilation of paleoclimate observations will become possible in the long range.