A singular evolutive extended Kalman filter to assimilate real in situ data in a 1-D marine ecosystem model

I. Hoteit, G. Triantafyllou*, G. Petihakis, J. I. Allen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

A singular evolutive extended Kalman (SEEK) filter is used to assimilate real in situ data in a water column marine ecosystem model. The biogeochemistry of the ecosystem is described by the European Regional Sea Ecosystem Model (ERSEM), while the physical forcing is described by the Princeton Ocean Model (POM). In the SEEK filter, the error statistics are parameterized by means of a suitable basis of empirical orthogonal functions (EOFs). The purpose of this contribution is to track the possibility of using data assimilation techniques for state estimation in marine ecosystem models. In the experiments, real oxygen and nitrate data are used and the results evaluated against independent chlorophyll data. These data were collected from an offshore station at three different depths for the needs of the MFSPP project. The assimilation results show a continuous decrease in the estimation error and a clear improvement in the model behavior.

Original languageEnglish (US)
Pages (from-to)389-397
Number of pages9
JournalAnnales Geophysicae
Volume21
Issue number1 PART 2
DOIs
StatePublished - Jan 1 2003

Keywords

  • Biological and chemical
  • Ecosystems and ecology
  • General
  • Numerical modelling
  • Ocean prediction
  • Oceanography

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Geology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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