Physical and biogeochemical oceanography data from Conductivity, Temperature, Depth (CTD) rosette deployments during the Antarctic Circumnavigation Expedition (ACE)

Data file(s): ace_ctd_CTD20200406CURRSGCMR/cACEYYYYLL_XXX_ct1.csv, ace_ctd_BOTTLE_20200406CURRSGCMR_hy1.csv

File header: 

EXPOCODE [NO UNITS]: expedition code as per https://exchange-format.readthedocs.io 
SECT_ID [NO UNITS]: ACE Expedition Leg
RUB3YYYYMMDD where RUB3 is the ICES 4 character platform code and YYYYMMDD is the date of departure of the expedition
STNNBR [NO UNITS]: ACE station number
CASTNO [NO UNITS]: ACE CTD cast number
CASTTYPE [NO UNITS]: Indicates downcast or upcast file
BOTTOM_DATE [YYYYMMDD]: UTC date of CTD cast at cast bottom [UTC]
BOTTOM_TIME [HHMM]: UTC time of CTD cast at cast bottom [UTC]
BOTTOM_LATITUDE [N]: Latitude of CTD cast at cast bottom [decimal degrees North]
BOTTOM_LONGITUDE [E]: Longitude of CTD cast at cast bottom [decimal degrees East]
BOTTOM_DEPTH [METERS]: Depth at CTD cast bottom [meters]
DATETIME_UTC [YYYY-MM-DDTHH:MM:SS+00:00]: UTC datetime of CTD cast at cast bottom in ISO8601 format [UTC]
LATITUDE [N]: Latitude of CTD cast at cast bottom [decimal degrees North]
LONGITUDE [E]: Longitude of CTD cast at cast bottom [decimal degrees East]
BTL_DATETIME [YYYY-MM-DDTHH:MM:SS+00:00]: UTC datetime of the bottle firing [UTC]
BTL_LAT [N]: Latitude of the bottle firing [decimal degrees North]
BTL_LON [E]: Longitude of the bottle firing [decimal degrees East]
SAMPNO [NO UNITS]: Rosette position (same as BTLNBR)
BTLNBR [NO UNITS]: Niskin bottle number
BTLNBR_FLAG_W [NO UNITS]: WOCE Bottle Quality Code
CTDPRS [DBAR]: CTD Pressure [decibars]
CTDPRS_FLAG_W [NO UNITS]: WOCE CTD Quality Code
DEPTH [METERS]: CTD depth [meters]
CTDTMP [ITS-90]: CTD temperature as per international temperature scale 1990 [degrees Celsius]
CTDTMP_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDSAL [PSS-78]: Practical salinity
CTDSAL_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDDENS [KG/M^3]: density sigma-theta [kilograms per cubic metre]
CTDDENS_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDSOUND [M/S]: sound velocity [metres per second]
CTDSOUND_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDOXY [UMOL/KG]: Dissolved oxygen concentration [micromol per kilogram]
CTDOXYFLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDOXYSAT [UMOL/KG]: Dissolved oxygen saturation [micromol per kilogram]
CTDOXYSAT_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDFLUOR1 [MG/M^3]: chlorophyll-a concentration from ECO fluorometer [milligrams per cubic metre]
CTDFLUOR1_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDFLUOR1Q [MG/M^3]: chlorophyll-a concentration from ECO fluorometer corrected for non-photochemical quenching [milligrams per cubic metre]
CTDFLUOR1Q_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDFLUOR2 [MG/M^3]: chlorophyll-a concentration from Sea-Point fluorometer [milligrams per cubic metre]
CTDFLUOR2_FLAG_W [NO UNITS]: WOCE CTD Quality Code
CTDFLUOR2Q [MG/M^3]: chlorophyll-a concentration from Sea-Point fluorometer corrected for non-photochemical quenching [milligrams per cubic metre]
CTDFLUOR2Q_FLAG_W [NO UNITS]: WOCE CTD Quality Code
BACKSC [1/M]: particulate backscattering at 700 nm [per metre]
BACKSC_FLAG_W [NO UNITS]: WOCE CTD Quality Code
PAR [UMOL/M^2/S]: photosynthetically active radiation [micromol per square metre per second]
PAR_FLAG_W [NO UNITS]: WOCE CTD Quality Code 

WOCE CTD Quality Codes are fully explained here: https://exchange-format.readthedocs.io/en/latest/quality.html

Null values: are filled with value ‘−999’