Surface underway measurements of carbon dioxide partial pressure, fugacity, and related variables were collected during two R/V Sonne research cruises in the Indian Ocean from July to August 2014. The data include mole fraction of CO2 in equilibrator headspace and outside air, barometric pressure, sea surface temperature, and salinity. Tobias Steinhoff of GEOMAR Helmholtz Centre for Ocean Research collected these observations using carbon dioxide gas analyzers and shower head equilibrators.
Use Cases
- Modeling air-sea carbon dioxide exchange based on fugacity of CO2 in seawater.
- Analyzing spatial variability of ocean carbon chemistry based on surface underway measurements.
- Calibrating satellite-derived sea surface temperature and salinity products with in-situ data.
- Studying seasonal or event-driven changes in the Indian Ocean carbon sink based on time-series observations.
Strengths
- Data includes multiple directly measured chemical and physical variables relevant for carbon flux calculations.
- Observations were collected during two dedicated research cruises (SO234 and SO235) with specific EXPOCODEs (06BE20140710, 06BE20140723).
- Measurements cover a specific time period from 2014-07-10 to 2014-08-08 in the Indian Ocean.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Last updated 2014-08-08; freshness should be verified.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- NOAA_NCEI
- Collection Method
- Surface underway observations using carbon dioxide gas analyzer and shower head equilibrator.
- Time Range
- 2014-07-10 to 2014-08-08
- Freshness
- Last updated 2014-08-08 00:00:00
- Geography
- Indian Ocean