Particulate light absorption coefficients (350 – 750 nm) measured using the filter pad method during the Antarctic Circumnavigation Expedition (ACE) during the Austral Summer of 2016/2017.

Data file(s): ace_UW_particulate_absorption_metadata_20200819CMRRSGCUR.csv

ACE_Sample_Number [string]: unique sample code from ACE, formatted as follows: shipname/ACE/legnumber/projectnumber/julianday[UTC]/eventnumber/PIinitials/projectsampleID
project_sample_number [string]: ACE project 1 sample ID code
Leg [string]: Leg of ACE voyage during which sample was collected, 1-3
Sampling_DateTime_UTC [YYYY-MM-DDTHH:MM:SS+HH:MM]: date and time at which the underway seawater sample was collected in ISO8601 format YYYY-MM-DDTHhh:mm:ss+00:00 [UTC]
Latitude [decimal_deg_N]: Latitude of seawater sample collection [degree_north]
Longitude [decimal_deg_E]: Longitude of seawater sample collection [degree_east]
Depth [m]: Depth sample was collected from [metres]
Volume Filtered [L]: volume of seawater sample filtered [litres]

Data file(s): ace_UW_particulate_absorption_20200612CMRRSGCUR.csv

Wavelength [nm]: Wavelength [nanometres]
Samples are stored in columns and labelled with ACE_Sample_Number [string] for matching with metadata file

Data file(s): ace_CTD_particulate_absorption_metadata_20200819CMRRSGCUR.csv

ACE_Sample_Number [string]: unique sample code from ACE, formatted as follows: shipname/ACE/legnumber/projectnumber/julianday[UTC]/eventnumber/PIinitials/projectsampleID
project_sample_number [string]: ACE project 1 sample ID code
Leg [string]: Leg of ACE voyage during which sample was collected, 1-3
Sampling_DateTime_UTC [YYYY-MM-DDTHH:MM:SS+HH:MM]: date and time at which the CTD seawater sample was collected in ISO8601 format YYYY-MM-DDTHhh:mm:ss+00:00 [UTC]
Latitude [decimal_deg_N]: Latitude of seawater sample collection [degree_north]
Longitude [decimal_deg_E]: Longitude of seawater sample collection [degree_east]
Depth [m]: Depth sample was collected from [metres]
Station_number [string]: CTD Station Number
Cast_number [string]: CTD Cast Number, number resets each leg
Bottle_number [string]: CTD niskin bottle number
Volume Filtered [L]: volume of seawater sample filtered [litres]

Data file(s): ace_CTD_particulate_absorption_20200819CMRRSGCUR.csv

Wavelength [nm]: Wavelength [nanometres]
Samples are stored in columns and labelled with ACE_Sample_Number [string] for matching with metadata file

Data file(s): ace_UW_nonalgal_30m_absorption_20200612CMRRSGCUR.csv

Wavelength [nm]: Wavelength [nanometres]
Samples are stored in columns and labelled with ACE_Sample_Number [string] for matching with metadata file

Data file(s): ace_UW_nonalgal_90m_absorption_20200612CMRRSGCUR.csv

Wavelength [nm]: Wavelength [nanometres]
Samples are stored in columns and labelled with ACE_Sample_Number [string] for matching with metadata file

Data file(s): ace_UW_nonalgal_24h_absorption_20200612CMRRSGCUR.csv

Wavelength [nm]: Wavelength [nanometres]
Samples are stored in columns and labelled with ACE_Sample_Number [string] for matching with metadata file

Null values: NaN