Isopycnal Mixing in the North Atlantic Oxygen Minimum Zone Revealed by RAFOS Floats
نویسندگان
چکیده
منابع مشابه
Changes in the Ventilation of the Oxygen Minimum Zone of the Tropical North Atlantic
Changes in the ventilation of the oxygen minimum zone (OMZ) of the tropical North Atlantic are studied using oceanographic data from 18 research cruises carried out between 28.58 and 238W during 1999–2008 as well as historical data referring to the period 1972–85. In the core of the OMZ at about 400-m depth, a highly significant oxygen decrease of about 15 mmol kg is found between the two perio...
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In the ocean, sinking of particulate organic matter (POM) drives carbon export from the euphotic zone and supplies nutrition to mesopelagic communities, the feeding and degradation activities of which in turn lead to export flux attenuation. Oxygen (O2) minimum zones (OMZs) with suboxic water layers (< 5 μmol O2 kg−1) show a lower carbon flux attenuation compared to welloxygenated waters (> 100...
متن کاملOn long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats
[1] Argo float data (subsurface tracks and temperature profiles collected from March 2004 through May 2005) are used to detect signatures of long Rossby waves in the velocity of the currents at 1000-m depth and temperature, between the ocean surface and 950 m, in the zonal band of 4 N–24 N in the tropical North Atlantic. Different types of long Rossby waves (with the characteristic scales betwe...
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[1] During deglaciation at 17 ka the intensity and footprint of the oxygen minimum zone (OMZ) increased in the Eastern Tropical North Pacific (ETNP) before a subsequent expansion on the California Margin. Evidence for the earlier increase is found in trace metal concentrations, lamination preservation and dN values from cores located between 540–750 m water depth in the Gulf of Tehuantepec, Sou...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Oceans
سال: 2019
ISSN: 2169-9275,2169-9291
DOI: 10.1029/2019jc015148