Dataset: Particle beam attenuation coefficient (Cp) data from ODF (Ocean Data Facility) rosette, R/V Knorr KN199-04, KN204-01 in the Subtropical northern Atlantic Ocean, 2010-2011 (U.S. GEOTRACES NAT project)

Calibrated transmissometer data (particle beam attenuation coefficient, Cp) for the two deployed transmissometers (trace-metal clean Geotraces Carousel, GT-C; and the Ocean Data Facility conventional rosette, ODF, also known as the SIOR rosette). The transmissometers were WET Labs, Inc., 25 cm pathlength, C-Star transmissometer (660 nm). Traditional CTD readings (pressure, temp, sal, oxygen, depth) are reproduced here for convenience. Metadata for data other than Cp reported here should be consulted.

NOTE: Revised dataset was served on 5 Nov. 2013. 

Please note that data may not be final, pending intercalibration results and further analysis. If you are interested in following changes to US GEOTRACES data, there is an RSS feed available from the GEOTRACES-NAT project page.