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CTD_TM_Nuts_Chl
Data Object CTD TM_Rosette Nutrients Chl
contact PIs:
Dataset description
IronExII CTD, TM Rosette CTD, nutrients and chlorophyll data
Acquisition description
Processing description
BCO-DMO Note:
No metadata supplied with these data
Some parameters and units require additional work
BCO-DMO Processing Notes
Prepared by WHOI OCB-DMO from original file: FeX2 edited CTD,TM ROS,nuts and C.XLS
Original file was downloaded on 16June2008 from http://www.mbari.org/sofex/IronEx_II.htm
Changes made to original file:
- Extensive editing to remove blank lines, organize data (stations, etc) into rows/columns
- Multiple occurrences of parameter header lines throughout file removed
- Single parameter header line at top retained after reformatting
- Misc comments replicated in cast log removed from file
- Parameter names edited to conform to BCO-DMO convention
- Discrepancy in units for parameters Total_PP and Total_HP
- Units reported as µgC/l in some cases, µM C in others
- This discrepancy still needs to be resolved (BCO-DMO, 22July2009)
- Duplicate parameter names Phaeo changed to Phaeo_a and Phaeo_b
- Station changed to Station_Id as parameter name
- Station_ids using multiple rows combined into one station id
- Spaces replaced with underscores in station_ids
- “#305” is sample number for Transect_thru_hull_#305 in these stations
- date, time, event, cast, lat, lon manually inserted from Cast Log using event in Cast Log
- Original lat/lons, dates, times checked against same data in Cast Log before using
- Found SLIGHT differences between original and cast log
- Used cast log values throughout (appeared to be more reliable/consistent)
- Original event replaced with event from Cast_Log for consistency
- “nd” inserted as no data value in blank cells
Issues/Notes:
TM-Rosette-test: “note NO3 rinse” comment removed
Cochlan (in original event column) - What does Cochlan mean/signify??
Event: 19951473510 – obvious incorrect time but no correction found
Station_Id: TM-Rosette_259 Original Time is 1440, Cast Log time is 1727 (Used Cast Log)
Station_Id: TM-Rosette_314 Original Time is 1402, Cast Log time is 0000
(Used Cast Log – 1402 is closer to on deck time)
Field Names List
| Parameter | Description | Units |
|---|
| date | Date UTC | YYYYMMDD |
| time | Time UTC | HHMM |
| lat | latitude, negative denotes South | decimal degrees |
| lon | longitude, negative denotes West | decimal degrees |
| event | Unique event number (Generated by BCO-DMO) | YYYYDAYHHMM |
| yrday | Day of year | integer |
| cast | Cast id | integer |
| depth | Depth in meters | meters |
| POC | POC | ug |
| Oxygen | Oxygen | uM |
| Chla | Chl-a | mg/m3 |
| NH4 | NH4 | uM |
| PO4 | PO4 | uM |
| SiO4 | SiO4 | uM |
| NO3 | NO3 | uM |
| Station_Id | Cruise station id | text |
| Phaeo_a | Phaeo_a | mg/m3 |
| Phaeo_b | Phaeo_b | µM(??) |
| SF6 | SF6 | mol dm-3 |
| Potemp | Potemp | (tbd) |
| Sal | Sal | (tbd) |
| Flour | Flour | (tbd) |
| Trans | Trans | (tbd) |
| Sigmat | Sigmat | (tbd) |
| Total_PP | Total_PP | µM |
| Total_HP | Total_HP | µM |
| Synoc | Synoc | (tbd) |
| RFP | RFP | (tbd) |
| Prymn | Prymn | (tbd) |
| Dino | Dino | (tbd) |
| Diatom | Diatom | (tbd) |
| H_Flagell | H_Flagell | (tbd) |
| H_Dino | H_Dino | (tbd) |
| H_Ciliate | H_Ciliate
| (tbd) |
| A_Ciliate | A_Ciliate
| (tbd) |
Platforms List
Instruments List
- Conductivity, Temperature, Depth:
- TM Rosette:
This document is created from the content of the BCO-DMO metadata database. 2010-03-14 16:08:08
info app: /home/bco/dbase-v2 v.100108 CLC
Data URL: http://data.bco-dmo.org/jg/serv/BCO/Fe_Synthesis/IronEx_II/CTD_TM_Nuts_Chl.