التفاصيل البيبلوغرافية
| العنوان: |
Modelling the water isotopes distribution in the Mediterranean Sea using a high-resolution oceanic model (NEMO-MED12-watiso-v1.0): Evaluation of model results against in-situ observations. |
| المؤلفون: |
Ayache, Mohamed, Dutay, Jean-Claude, Mouchet, Anne, Tachikawa, Kazuyo, Risi, Camille, Ramstein, Gilles |
| المصدر: |
Geoscientific Model Development Discussions; 1/10/2024, p1-33, 33p |
| مصطلحات موضوعية: |
WATER distribution, STABLE isotopes, SEASONAL temperature variations, ISOTOPIC signatures, SALINITY |
| مستخلص: |
Stable water isotopes (δ18 Osw and δD) have been successfully implemented for the first time in a high-resolution model of the Mediterranean sea (NEMO-MED12). In this numerical study, model results are compared with available in-situ observations to evaluate the model performance about the present-day distribution of stable water isotopes and their relationship with salinity on a sub-basin-scale. There is good agreement between the modelled and observed distributions of δ18 Osw in the surface water. The model successfully simulates the observed east-west gradient of δ18 Osw characterising surface, intermediate and deep waters. The results also show good agreement between the simulated δD and the in-situ data. The δD shows a strong linear relationship with δ18 Osw (r2 = 0.98) and salinity (r2 = 0.94) for the whole Mediterranean Sea. Moreover, the modelled relationships between δ18 Osw and salinity agree well with observations, with a weaker slope in the eastern basin than in the western basin. We investigate the relationship of the isotopic signature of the CaCO3 shell (δ18Oc) with temperature and the influence of seasonality. Our results suggest a more quantitative use of δ18O records, combining reconstruction with modelling approaches. [ABSTRACT FROM AUTHOR] |
|
Copyright of Geoscientific Model Development Discussions is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
