PACIFICA Ocean Interior Carbon Data from the North and South Pacific, 1994

PACIFICA_49HG19940413 is a dataset of biological, chemical, and physical oceanographic parameters collected during cruise 49HG19940413 and NH94-1 aboard the HAKUREI MARU. The data, collected from 1994-04-13 to 1994-06 11 in the North and South Pacific Ocean, include dissolved inorganic carbon, alkalinity, pH, nutrients, chlorophyll a, and CTD profile measurements. It was collected by researchers from Hokkaido University and the National Institute for Resources and Environment as part of the PACIFICA international project for synthesizing Pacific Ocean interior carbon data.

Use Cases

• Modeling ocean carbon uptake and storage based on dissolved inorganic carbon and alkalinity measurements.
• Studying ocean acidification trends based on pH and related carbonate system parameters.
• Analyzing nutrient distributions and their relationship to biological activity based on nitrate, phosphate, and silicate data.
• Calibrating and validating ocean biogeochemical models based on profile data from CTD casts.

Strengths

• Includes multiple key parameters for ocean carbon cycle studies, such as dissolved inorganic carbon, alkalinity, pH, and nutrients.
• Data collected during a dedicated research cruise (49HG19940413/NH94-1) with specified instruments (CTD, Coulometer).
• Part of the international PACIFICA project, suggesting a standardized synthesis effort.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a single cruise in 1994, limiting temporal scope for trend analysis.

Provenance

Source

Yutaka W. Watanabe of Hokkaido University and Ko Harada of the National Institute for Resources and Environment (now AIST).

Collection Method

Discrete sample and profile observations using CTD, Coulometer for DIC measurement, and bottle samples.

Time Range

1994-04-13 to 1994-06-11

Freshness

Last updated 2026-03-05 23:07:43.121112; freshness should be verified.

Geography

North Pacific Ocean and South Pacific Ocean