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bottle

Data Object Niskin bottle samples
contact PIs:
name        title
Dr Nick Bates         Principal Investigator

Dataset description

 PI:              Nick Bates
 of:              Bermuda Biological Station for Research (BBSR)
 dataset:         Niskin bottle and CTD data; nutrients, oxygen, DIC, POC, PON
 platform:        R/V Weatherbird II
 
 Methodology: see Chapter 3: CTD & Related Measurements in U.S. JGOFS BATS  
    Method Manual Version 4 (1997).  Bermuda Atlantic Time-Series Study April 1997. 
    Anthony H. Knap, Anthony F. Michaels et al., 136 pp.
    (link to BATS Method Manual version 4 local copy)
 
 OCB DMO Note: Longitude changed to negative values indicating West;
    depth_n estimated, surface at 1 meter;  Niskin_id (90409##nn) split 
    into sta '##' and Nis bottle number 'nn'.  HPLC from original datafile 
    not included because newer HPLC pigment data are already in database; 
    all data are from primary sensors; event number is taken from cruise 
    event log, and DMO added bot numbers to support data integration
 
 PI note: All bottle fires included; most include sampling data. Level 
    of Detection (LOD) not imposed for nutrient data. Typical methodology 
    suggests LOD's of ~ 0.03 umol/kg for NO3+NO2 and SRP. No sample, 
    Missing or bad data set to nd. Fluometric analysis for chl_a and 
    Phaeo using 500ml sample were performed by BIOS BBOP lab.
    
    Analysis Note: files listing SiO4 data from the sample rerun:
    WB Silicate reruns

 
 Caution:  this data set is considered final, but it is unknown whether 
    the CTD data have had any post-cruise calibrations applied.
 

Acquisition description

Processing description


Field Names List

ParameterDescriptionUnits
eventunique sampling event number from cruise event logYYYYMMDDhhmm
datestart date of event (GMT)YYYYMMDD
timestart time of event (GMT)hhmm
lonlongitude, negative denotes Westdecimal degrees
latlatitude, negative denotes Southdecimal degrees
stacast number for sampling eventdimensionless
botNiskin bottle numberdimensionless
NisNiskin bottle order numberdimensionless
Q_btlbottle quality flag 1 = good, -1 = misfire, -2 = suspect leakersigned integer
presspressure; from CTDdecibars
depthdepth, calculated from pressuremeters
depth_ndepth, nominal bottle firingmeters
temptemperature; from CTDdegrees Celsius
sal_CTDsalinity; from CTDdimensionless
sigma-tsigma-T (density)kilograms/meter^3
chla_fluorfluorescence, from CTD profiler rescaled, units are numerically equivalent to chlorophyll-a concentrationsmicrograms/liter
sal_botsalinity from bottle sampledimensionless
O2_umol_kgoxygen; dissolved; from bottlemicromoles/kilogram
DICdissolved inorganic carbonmicromoles C/kilogram
Alkalinitytotal alkalinitymicromoles/kilogram
NO3_NO2nitrates plus nitrites (NO2 in this region is essentially non-detectable)micromoles/kilogram
SRPsoluble reactive phosphorusmicromoles/kilogram
SiO4Silicatemicromoles/kilogram
POC_ug_kgparticulate organic Carbonmicrograms/kilogram
PON_ug_kgparticulate organic Nitrogen micrograms/kilogram
Pmax_npressure, nominal maximum for stationdecibars
fluorfluorescence from CTDmicrograms/liter

Platforms List

R/V Weatherbird II WB0409 R/V Weatherbird II WB0413 R/V Weatherbird II WB0506 R/V Weatherbird II WB0508

Instruments List

  1. Niskin:


This document is created from the content of the BCO-DMO metadata database.    2009-11-22  09:21:17

info app: /home/ocb/dbase v.090827 CLC
Data URL: http://ocb.whoi.edu/jg/serv/OCB/EDDIES/WB0508/bottle.