Data · collection
Oceanic Total Carbon Dioxide, Partial Carbon Dioxide and Alkalinity Measured during the JGOFS Equatorial Pacific Process Study
Listed in NASA Earthdata CMR
The Equatorial Pacific Process Study (EQPAC) was conducted along 140 deg W longitude during 1992.
Description
Four cruises took place: February 3 - March 9, March 19 - April 15, August 5 - September 18, and September 24 - October 21. A fifth benthic cruise and sediment trap legs were added.
During the first cruise (TT007), 15 stations were occupied along 140 deg W longitude from 12 deg N latitude to 12 deg S latitude. During the second cruise (TT008), data was collected at 8 stations along 140 deg W longitude from 9 deg S latitude to 9 deg N latitude. During the third cruise (TT011), data was collected at 15 stations along 140 deg W from 12 deg N latitude to 12 deg S latitude.
Read the rest (3 more)
During the fourth cruise (TT012), data was collected at 5 stations along 140 deg W longitude from 17 deg S latitude to the equator. Water bottles were mounted on a rosette CTD and cast at each station to different depths. Total carbon dioxide was measured using coulometric techniques.
Partial pressure of carbon dioxide in sea water was measured using two methods: 1) a gas-seawater equilibrator combined with a gas chromatograph, and 2) an NDIR analyzer. Total alkalinity was measured by titration. Partial pressure of carbon dioxide in sea surface air was also measured.
Sea surface temperature and salinity were measured as well. The data is public domain and can be retrieved on-line at "usjgofs.whoi.edu/jg/dir/jgofs/"
Links
Get the data
- Access US JGOFS data usjgofs.whoi.edu/jg/dir/jgofs ↗
download · from NASA CMR
Documentation and papers
- US JGOFS Home Page usjgofs.whoi.edu ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214605519-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214605519-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Alkalinity · Carbon Dioxide · CO2 ANALYZERS · COULOMETERS · GAS CHROMATOGRAPHS · Nondispersive Infrared Gas Analyzer · Salinity · Sea Surface Temperature · SHIPS · Total Carbon Dioxide · WATER BOTTLES · Water Pressure
- Inferred from text
- Climate change science 70%
Provenance · 1 source records, 19 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214605519-SCIOPS | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3702 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[instrument].gcmd_instrument:co2-analyzers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:coulometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:gas-chromatographs | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:ndir-gas-analyzer | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:water-bottles | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/carbon-and-hydrocarbon-compounds/carbon-dioxide | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-chemistry/alkalinity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-chemistry/carbon-dioxide/total-carbon-dioxide | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-pressure/water-pressure | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-temperature/sea-surface-temperature | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/salinity-density/salinity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ships | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |