Coefficients of primary temperature correction: correct_tmp_pri_MR1306_p490.txt
Coefficients of dependencies for pressure (Pcor) and time (Tcor) and offset were calculated from the data > 490dbar.
corrCTDTMP = CTDTMP - (Pcor * CTDPRS + Tcor * Sumdate + offset)
(Sumdate is assumed to be elapsed days from the sensor calibration date)
Coefficients of primary conductivity correction: correct_cnd_pri_MR1306_t.txt
Coefficients of dependencies for pressure (Pcor), conductivity (Ccor), conductivity * pressure (CPcor) and time (Tcor) and offset were calculated from the data, the standerd deviation of which was < 0.0002, with a less weighted operation if the data were < 500dbar.
corrCTDCND = CTDCND - (Pcor * CTDPRS + Ccor * CTDCND + CPcor * CTDCND * CTDPRS + Tcor * Sumdate + offset)
(Sumdate is assumed to be elapsed days from the time of the first observation at Sta. 000, Cast 1 (000M001), when the CTD was at the bottom.)
- Dissolved oxygen (RINKO III)
Coefficients of primary RINKO III correction: correct_rnk_pri_MR1306_t.txt
Time variables of primary RINKO III: MR1306_prs_scanmax.txt
- Dissolved oxygen (SBE43)
Coefficients of primary SBE43 correction: correct_o43_pri_MR1306.txt
First, we calculated gradients of up cast dissolved oxygen profiles from the bottle data. Then, we weighted the gradients and calculated correction coefficients for the dissolved oxygen based on SBE_application note 64-2. The corrected dissolved oxygen was estimated from the coefficients as follows.
corrCTDOXY = (soc + cof1) * (CTDOXV + voffset + cof6) * (1.0 + ((A1 + cof2) * CTDTEMP) + ((B1 + cof3) * CTDTEMP^2) + ((C1 + cof4) * CTDTEMP^3)) * saturation * exp((E1 + cof5) * CTDPRS / (CTDTEMP + 273.15))
Coefficients of fluorescence correction: correct_fl_MR1306_w.txt
We linearly correlated the fluorescence with the bottle data obtained from the Welschmeyer method. The data used for the calculation were sampled from mid night to 5 a.m. (LST).
corrCTDFL = slope * CTDFL + offset
- Light transmission
Time variable of light transmission: xmiss_sumdate_MR1306.txt
Vdark was an average of CTD pre-casts for all stations.
Vref was calculated from slopes of temporal variation in the following casts; 029M001, 030M001, 031M001, 032M001, 033M001, and 056M001.
Vref offset was set to be a value not to exceed 100% for the light transmission and fall below 0 for the coefficient of beam attenuation, when they were calculated from the above-mentioned slope.