CLIVAR I09N Underway Ocean Carbon and Meteorological Measurements

From March 22 to April 28, 2007, this dataset contains underway surface observations collected aboard the R/V Roger Revelle during cruise 33RR20070322 in the Bay of Bengal and Indian Ocean. It includes measurements of carbon dioxide partial pressure in air and water, sea surface temperature, salinity, fluorescence, wind speed and direction, and barometric pressure. The data were collected for the CLIVAR Global Ocean Carbon and Repeat Hydrography Program to quantify changes in heat, freshwater, and CO2 storage and transport.

Use Cases

• Calculating air-sea CO2 flux based on partial pressure difference measurements.
• Analyzing spatial variability of sea surface salinity and temperature across the Bay of Bengal.
• Correlating wind speed and direction with surface ocean carbon parameters.
• Calibrating and validating ocean carbon cycle models using in-situ underway data.

Strengths

• Data collected over a focused 38-day research cruise provides a coherent temporal snapshot.
• Includes directly measured, co-located atmospheric and oceanic carbon dioxide parameters.
• Cross-platform presence on NASA EarthData and Data.gov signals importance and curation.

Limitations

• Key metadata such as row count, specific column names, and data license are not provided by any source.
• Conflicting last-update dates (2007-04-28 vs. 2026-03-05) create uncertainty about data versioning.
• Documentation gaps exist regarding instrument calibration and data processing methods.

Provenance

Source

Dr. Rik H. Wanninkhof of NOAA's Atlantic Oceanographic and Meteorological Laboratory (AOML).

Collection Method

Underway surface observations using barometric pressure sensors, CO2 gas analyzers, equilibrators, and thermosalinographs aboard the R/V Roger Revelle.

Time Range

2007-03-22 to 2007-04-28

Freshness

Last updated 2026-03-05 according to one source, but another cites the collection end date of 2007-04-28.

Geography

Bay of Bengal and Indian Ocean