A study of the freshwater discharge from the Amazon River into the tropical Atlantic using multi-sensor data

Details A study of the freshwater discharge from the Amazon River into the tropical Atlantic using multi-sensor data A study of the freshwater discharge from the Amazon River into the tropical Atlantic using multi-sensor data

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3202605j&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 2, CiteID L02605

Physics

2

Oceanography: Physical: Nearshore Processes, Oceanography: General: Coastal Processes, Oceanography: General: Equatorial Oceanography, Oceanography: Physical: Upper Ocean And Mixed Layer Processes, Oceanography: General: Descriptive And Regional Oceanography

Scientific paper

We study freshwater discharge from the Amazon River into the tropical Atlantic using monthly mean multi-sensor data from September 1997 to July 2003. In order to demonstrate freshwater discharge, we used chlorophyll concentration (Chl_a) and diffuse attenuation coefficient (DAC) measured by the Sea-viewing Wide Field-of-view Sensor (SeaWiFS), and salt steric height anomaly (Δη'S) derived from Integrated Multi-Sensor Data Analysis (IMSDA). IMSDA was obtained from estimating the long term-time series of Δη'S by removing the thermal steric height anomaly (η'T) from altimetry data. Comparisons of long-term time series of Δη'S, Chl_a, and DAC were made with mooring data at 8°N, 38°W, which were highly correlated. There are three- to five-month lags between the Amazon River discharge and 4°N latitude estimated from latitude-time diagram derived from SeaWiFS measurements.

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