This directory link below contains data from the CLIMODE bobbers. The bobbers are modified APEX profiling floats that were acoustically tracked to yield the velocity and thickness of the subtropical mode water layer in the western subtropical Atlantic between 2005 and 2009.

Any use of or reference to this data should cite:

Fratantoni, D.M., T.K. McKee, B.A. Hodges, H.H. Furey, and J.M Lund, 2010. CLIMODE Bobber Data Report: July 2005-May 2009. Woods Hole Oceanographic Institution Technical Report WHOI-2010-03. 154 pp.


Data Contents:

There are 40 MATLAB data files, one for each float, named bobberXXX.mat, where XXX are the last three digits of the float ID. Each file contains 5 structures, to wit "argos", "eng", "park", "profile", and "rafos".

The fields of "argos" are "lon", "lat", and "time". These are the longitudes and latitudes from the satellite fixes obtained each time a float surfaced, and the respective times of the fixes. Longitudes and latitudes are expressed in decimal degrees, with longitudes west of the prime meridian negative. Times are in MATLAB "datenum" format. The same conventions are used for position and time data in other structures.

"eng" contains a variety of float engineering data, including buoyancy piston position, internal vacuum, and battery voltage.

"park" contains the daily pressure (dbar) and temperature (C) values recorded by the float while parked, and the times of these measurements.

Two of the fields of "profile" are arrays named "pressure" and "temperature". Each array column contains data from one bobber profile. The other fields are the longitude, latitude and time of each profile. When acoustic fixes are unavailable, longitude and latitude are interpolated from the nearest argos fixes.

"rafos" contains the acoustic data from each float. Fields "h1" through "h4" are the highest four source pong correlation heights recorded each day. The corresponding time of arrival delays, in deci-seconds, are fields "toa1" through "toa4". "toatime" is the date vector corresponding to these data. The calculated positions are contained in "lat", "lon", and "time". "u" and "v" are average horizontal velocities (cm/s), and "w" is average vertical velocity (mm/s).

Dr. David M. Fratantoni

Data Directory