1. Bias correction for the CTD salinity profiles The correction value, +0.0388, was added to the CTD salinity profiles to correct the CTD salinity bias. 2. Bias correction for the XCTD salinity profiles The following values were added to the XCTD salinity profiles to correct the XCTD salinity biases. 13710201.XCT 0.0522 13710501.XCT 0.0214 13710701.XCT 0.0320 13710801.XCT 0.0359 13710901.XCT 0.0167 13711001.XCT 0.0331 3. Correction for the XCTD salinity profiles The XCTD salinity profiles were corrected by using the following equation: S_corrected = S_original - (c0 + c1 * t) c0 = 0.0782602430582795 c1 = -0.00555037184810493 where t is temperature (degC) and c0 and c1 are the correction coefficients.