| Parameter | Description | Units |
|---|
| date | date sampling began (GMT) | YYYYMMDD |
| event | unique sampling event | dimensionless |
| ev_code | event code from cruise log | alphanumeric |
| lon | longitude, negative denotes West | decimal degs |
| lat | latitude, negative denotes South | decimal degs |
| cruise_deployment | cruise and tether deployment number | text |
| cup | IRS cup number | dimensionless |
| sinking_rate_fraction | cup 1 has >820 m/d, cup 2 has 410 to 820 m/day etc | m per day |
| cup_duration_per_cycle | time each cup is under funnel, each cycle of ball valve | minutes |
| PC_flux_tot_per_cup | total particulate carbon flux | umol/m2/day |
| PIC_flux_per_cup | particulate inorganic carbon flux | umol/m2/day |
| PC_flux_per_cup | particulate carbon (calculated by difference PC-PIC) flux | umol/m2/day |
| PN_flux_per_cup | particulate nitrogen flux | umol/m2/day |
| Bsi_flux_per_cup | biogenic silica flux | umol/m2/day |
| PC_flux_per_cup_duration | flux normalized to cup duration (as the longer a cup is open the more it can collect) | umol/m2/day/min |
| POC_K2_1_swimmers | K2-1 POC contents of zooplankton removed from the samples and analysed separately | umol/m2/day |
| PC_flux_fraction | % PC in cup of total POC in trap | percent |
| PC_flux_cumulative_fraction | % PC in cup and all preceding cups of total POC in trap | percent |
| POC_to_PN | molar ratio | dimensionless ratio |
| PO_to_PIC | molar ratio (=mass ratio as have carbon/carbon) | dimensionless ratio |
| PC_to_POC | molar ratio | dimensionless ratio |
| PC_to_BSi | molar ratio bd indicates below detectable limit or bad data | dimensionless ratio |
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