rom sensor PIC010.
#
# these terms are described in Li et al. (2025) and in the parameter descriptions accompanying this data set.
#
# cst1035c=(cst1035-CST1035Z)/cst1035r
# cst1035cc=cst1035c+cst1035t*CST1035t_MULT-cum1035dr*CST1035DR_MULT
# tr1035=cst1035cc/CST1035NetVref
# cp1035=-4*ln(tr1035)+press*press_cft
# cp1035_sd=-4*ln((CST1035NetVref-cst1035_sd)/CST1035NetVref)
# cp1035_n=cst1035_n
#
# PIC sensor data reduction. PIC010
#
# pic010c=(pic010-PIC010Z-PIC010_V_CROSS*tr1035)/pic010r
# pic010simp=(pic010-PIC010Z-PIC010X)/pic010r+PIC010_PrCofft*press/1000
# pic010cc=pic010c/tr1035^0.5+PIC010_PrCofft*press/1000
# pic010Biref=pic010cc*PIC010_Birefringence
# pic010noTr_Biref=pic010simp*PIC010_Birefringence
# pic010Biref_sd=pic010_sd*PIC010_Birefringence
# pic010Biref_n=pic010_n
#
# Flourometer data reduction
#
# The main adjustment to data was to subtract readings found in deepwater
# The results are NOT absolutely calibrated in Chlorophyll units but are close
#
# Chl_flsp=flsp-flsp_z
# Chl_flsp_sd=flsp_sd
# Chl_flsp_n=flsp_n

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16:T51f,This data set was derived from optical particle sensors deployed during casts of the GEOTRACES Trace Metal Carousel (GTC) as part of the GEOTRACES GP17-OCE Expedition from the south Pacific gyre to Southern Ocean (R/V Roger Revelle RR2214). Data files are provided containing data for the 0-500 meter depth interval and also for the full water column. Data include measures of particle birefringence photon yield (units of parts per million per meter) and particle beam attenuation coefficient (units of per meter). The two PIC sensors (PIC010, and PIC011) used in this study have been extensively documented (Bishop et al. 2022). Briefly, the sensors are built on a digital WETLabs C-star 25-centimeter pathlength 6000-meter rated transmissometer. A 6

05_GP17_GTC_CTD_Profile_Average_6000m_data_Submit.csv