Oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania

Anja Engel1, Soeren Thomsen1, Johannes Karstensen2, Marcus Dengler3 and Gerd Krahmann1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Kiel, Germany, (3)GEOMAR, Kiel, Germany