Major impact of dust deposition on the productivity of the Arabian Sea
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2019 |
| Auteurs (7) | : | GUIEU Cecile AL AZHAR Muchamad AUMONT O MAHOWALD N LÉVY Marina ETHÉ Christian LACHKAR Z |
| Revue scientifique | : | Geophysical Research Letters |
| Volume | : | 0 |
| Fascicule | : | 0 |
| Pages | : | |
| DOI | : | 10.1029/2019GL082770 |
| URL | : | https://doi.org/10.1029/2019gl082770 |
| Abstract | : | In the Arabian Sea (AS), spatio‐temporal nutrient limitation patterns of primary production and the possible role of nutrient inputs from the atmosphere are still not well understood. Using a biogeochemical model forced by modelled aerosol deposition, we show that without high atmospheric iron inputs through dust deposition during the summer monsoon, primary production over the AS would be reduced by half. Atmospheric iron deposition also supports most of the nitrogen fixation over the AS. However, our ocean biogeochemistry modelling results suggest that dinitrogen fixation constitutes a negligible fraction of the primary production. Finally, we show that atmospheric inputs of nitrogen, mostly from anthropogenic activities in India, have a negligible impact on primary production. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Guieu C, Al Azhar M, Aumont O, Mahowald N, Lévy M, Ethé C, Lachkar Z (2019) Major impact of dust deposition on the productivity of the Arabian Sea. Geophys Res Lett | doi: 10.1029/2019GL082770
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