This is a preliminary dataset that is undergoing changes and is not currently meant for public use

Float data files - version 0.1_2025_12

Grouped by region or individually. One file per float, similar format as GDAC files (details below)

Region Link File Size Date Updated
Global dataset BGC_Argo_Plus_Global 13.0 GB 2025-12
Individual Float Files FTP Directory 2,228 files, 29.9 GB total 2025-12

Gridded data

(X x Y x Z grid, not mapped or interpolated)

Region Link File Size Date Updated
N/A N/A N/A N/A

Float file details

Variables originally included in the Sprof files that are modified:

Variable name Type Description
[VAR] Unchanged Raw variable copied directly from DAC
[VAR]_ADJUSTED Unchanged ADJUSTED variable copied directly from DAC
[VAR]_BGCArgoPlus Biogeochemical Argo+ version Variable modified from DAC according to the processing level description
[VAR]_BGCArgoPlus_ProcessingLevel Biogeochemical Argo+ version Processing level of variable

Processing Level Descriptors:
“RTA/DM” - Mode allowed (RTA = Real Time Adjusted and delayed mode allowed, DM = only delayed mode allowed)
“F” - DAC QC flags applied (Bad data flagged as NaN)
“RO” - Outlier removed
“O2Bias” - O2 Bias correction applied (Bushinsky et al., 2025, Nachod et al., in prep)
“Thermo” - Thermodynamic correction applied to pK1/pK2 (Johnson et al., in prep)

Newly calculated derived variables added to the BGCArgoPlus files:

Variable name Description
TALK_BGCArgoPlus Alkalinity estimated from ESPER Mixed, which is an average of ESPER neural network and ESPER multiple linear regression (Carter et al. 2023)
DIC_BGCArgoPlus DIC calculated from float pH and TALK_BGCArgoPlus. O2 Bias Correction applied where possible and the Johnson et al. XXXX adjustment to pk1 and pk2 used.
sigma0 Potential Density calculated using gsw.SA_from_SP, gsw.CT_from_t, gsw.sigma0
cons_temp Conservative temperature calculated using gsw.CT_from_t
spiciness0 Spiciness calculated using using gsw.SA_from_SP, gsw.CT_from_t, gsw.spiciness0
gamma Neutral density calculated using Matlab eos80_legacy_gamma_n from XXXX
depth Depth calculated using gsw.conversions.z_from_p
MLD MLD calculated using De Boyer Montegue et al. 2004 (modified to work w/ under ice data as well)
DOXY_SAT The saturation concentration of oxygen using Garcia and Gordon 1992 (gsw.O2sol_SP_pt). Assumes standard atmospheric pressure.

Version notes

v0.1_2025_12 - Changed to “BGCArgoPlus” variable suffixes. v0.0 - Preliminary upload.