edu.ucar.opensky::articles:13299 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T03:34:11.796068 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7cv4jp8 A curious local surface salinity maximum in the northwestern tropical Atlantic 2014-01-21T00:00:00Z publication https://n2t.org/ark:/85065/d7cv4jp8 https://doi.org/10.1002/2013JC009450 Grodsky, S. author Carton, J. author Bryan, F. author UCAR/NCAR - Library publisher Sea surface salinity (SSS) measurements from the Aquarius/SAC-D satellite reveal the seasonal development of a local salinity maximum in the northwestern tropical Atlantic in boreal winter to early spring. This seasonal tropical SSS maximum, which is confirmed by comparison to in situ observations, is centered at 8°N, and is up to 0.5 psu saltier than the surrounding water despite its location in the latitude band of the highly precipitating Intertropical Convergence Zone. Its existence seems to be the result of the differing phases in the seasonal variations of Amazon discharge and ocean currents. In late boreal fall/winter, when the discharge is at its minimum, but the North Brazil Current (NBC) and its retroflection are still present, a mixture of high-salinity water of equatorial and South Atlantic origin is transported along the shelf break by the NBC retroflecting into the western part of the North Equatorial Countercurrent (NECC). This salt transport produces the salty signature of the western part of the NECC, which is seen as a localized salinity maximum on satellite imagery, in contrast to the fresh signature present in summer-early fall. The seasonal slowing/reversal of the NECC in boreal spring stops this eastward salt transport, thus leading to the disappearance of this northwestern tropical SSS maximum. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2014 American Geophysical Union. None eng geoscientificInformation