Simultaneous data-based optimization of a 1D-ecosystem model at three locations in the North Atlantic: Part II—Standing stocks and nitrogen fluxes
Clicks: 1
ID: 298733
2003
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
0.0
/100
1 views
0 readers
AI Quality Assessment
Not analyzed
Readership in this journal
Ranked #1,252 of 1,397 articles by views in journal of marine research
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 1,397 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
This study relates the performance of an optimized one-dimensional ecosystem model to observations at three sites in the North Atlantic Ocean: the Bermuda Atlantic Time Series Study (BATS, 31N 64W), the location of the North Atlantic Bloom Experiment (NABE, 47N 20W), and Ocean Weather Ship INDIA 59N 19W).The ecosystem model is based on nitrogen and resolves dissolved inorganic nitrogen (N), phytoplankton(P), zooplankton (Z) and detritus (D), therefore called the NPZD-model.Physical forcing, such as temperature and eddy diffusivities are taken from an eddy-permitting general circulation model of the North Atlantic Ocean, covering a period from 1989 through 1993.When an optimized parameter set is applied, the recycling of organic nitrogen becomes signi cantly enhanced, compared to previously published results of the NPZDmodel.The optimized model yields improved estimates of the annual ratio of regenerated to total primary production ( f-ratio).The annual f-ratios are 0.09, 0.31, and 0.42 for the locations of BATS, NABE, and OWS-INDIA, respectively.Nevertheless, three major model de ciencies are identi ed.Most conspicuous are systematic discrepancies between measured 1 4 C-xation rates and modeled primary production under nutrient depleted conditions.This error is primarily attributed to the assumption of a constant carbon-to-nitrogenratio for nutrient acquisition.Secondly, the initial period of the modeled phytoplankton blooms is hardly tracked by the model.That particular model de ciency becomes most apparent at the OWS-INDIA site.The interplay between algal growth and short-term alterations in strati cation and mixing is believed to be insuf ciently resolved by the physical model.Eventually, the model's representation of the vertical nitrogen export appears to be too simple in order to match, at the same time, remineralization within the upper 300 meters and the biomass export to greater depths.
| Reference Key |
openalex_W2524067523
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | Markus Schartau, Andreas Oschlies |
| Journal | journal of marine research |
| Year | 2003 |
| DOI |
10.1357/002224003322981156
|
| URL | |
| Keywords | Keywords not found |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.