GO-SHIP Easy Ocean: Gridded ship-based hydrographic section of temperature, salinity, and dissolved oxygen
Katsuro Katsumata1, Sarah G Purkey2, Rebecca Cowley3
1JAMSTEC, Yokosuka, 2370061, Japan. k.katsumata@jamstec.go.jp.
Scientific Data
|March 26, 2022
Summary
Ship-based hydrography provides essential ocean data. A new, standardized data product from the Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) makes decades of temperature, salinity, and oxygen measurements more accessible for climate science.
Area of Science:
- Oceanography
- Climate Science
- Marine Data Science
Background:
- Ship-based hydrography is crucial for high-resolution oceanographic measurements.
- The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) has collected extensive data over four decades.
- Existing GO-SHIP data are difficult to use due to inconsistent formatting.
Purpose of the Study:
- To create a unified, gridded data product of temperature, salinity, and dissolved oxygen.
- To enhance the accessibility and usability of historical hydrographic data.
- To support a wider range of oceanographic and climate research.
Main Methods:
- Combining and reformatting historical hydrographic data.
- Gridding data collected by Conductivity-Temperature-Depth-Oxygen (CTDO) profilers.
- Ensuring data product is machine-readable and compatible with analysis software.
Main Results:
- A new, accessible data product integrating decades of oceanographic measurements.
- Standardized temperature, salinity, and dissolved oxygen data.
- Facilitation of data analysis for deep ocean studies, model validation, and instrument calibration.
Conclusions:
- The new data product significantly improves access to vital oceanographic data.
- Standardized data enables broader application in climate science and ocean research.
- Repeatable data processing allows for customized analyses and validation.
Related Concept Videos
01:03Precipitation Gravimetry
7.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
7.8K
01:05Gravimetry: Overview
6.9K
Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
6.9K
03:12Freezing Point Depression and Boiling Point Elevation
36.9K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
36.9K
01:14Testing Water Quality
198
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
198
01:27Energy Line and Hydraulic Gradient Line
1.5K
Based on Bernoulli's equation, the energy line (EL) and hydraulic grade line (HGL) provide graphical representations of energy distribution in a fluid flow system. For steady, incompressible, inviscid flows, Bernoulli's equation is expressed as:
1.5K
01:14Temperature Measurement Sites
2.3K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
2.3K