Alekseeva, Natalya; Gangnus, Ivan; Tarasenko, Anastasia; Kusse-Tiuz, Nikita; Vesman, Anna; Bloshkina, Ekaterina; Litina, Ekaterina; Aksenov, Peter; Polyakov, Igor: Nutrients, dissolved oxygen, pH, total alkalinity, salinity and temperature measured on water bottle samples during Akademik Tryoshnikov cruise NABOS 2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983870 (dataset in review)
Abstract:
This dataset presents in situ measurements of sea water chemical and physical parameters collected during the NABOS-2021 expedition aboard the R/V Akademik Tryoshnikov in the Nansen, Amundsen, and Makarov Basins of the Arctic Ocean (over the 125°E-170°W area) from September 15 to October 11, 2021.
Conducted with the Sea-Bird Electronics Inc SBE911plus CTD system and a SBE32 Carousel Water Sampler, a total of 9025 seawater samples were collected at 103 oceanographic stations. Physical parameters include temperature, salinity, and depth. Chemical analyses encompass dissolved inorganic nutrients (nitrate, nitrite, phosphate, ammonium, silicate), oxygen, total alkalinity, and pH. Dissolved inorganic nutrients were analyzed using a segmented flow analyzer from Seal Analytical. Ammonium was measured manually (via the colorimetric method) using a spectrophotometer (Shimadzu UV-1800). Dissolved oxygen was determined by the standard Winkler titration method using a handheld titrator (BRAND). Both pH and total alkalinity were measured by potentiometric titration using an automatic titrator (Metrohm 916 TiTouch).
This dataset is contributed by the NABOS project, a collaboration between the University of Alaska Fairbanks and the Arctic and Antarctic Research Institute, funded by the International Arctic Research Center (Fairbanks, USA).
Keyword(s):
Project(s):
Coverage:
Median Latitude: 78.741121 * Median Longitude: 158.392714 * South-bound Latitude: 73.779167 * West-bound Longitude: 125.889167 * North-bound Latitude: 81.998333 * East-bound Longitude: -170.098000
Date/Time Start: 2021-09-15T13:23:43 * Date/Time End: 2021-10-11T19:10:54
Minimum DEPTH, water: 1.27 m * Maximum DEPTH, water: 3950.90 m
Event(s):
NABOS2021_1 * Latitude: 81.962667 * Longitude: 125.931667 * Date/Time: 2021-09-15T13:23:43 * Elevation: -3978.0 m * Location: Arctic Ocean * Campaign: NABOS-2021 * Basis: Akademik Tryoshnikov * Method/Device: CTD/Rosette (CTD-RO)
NABOS2021_2 * Latitude: 81.706500 * Longitude: 125.918333 * Date/Time: 2021-09-15T22:41:43 * Elevation: -3962.0 m * Location: Arctic Ocean * Campaign: NABOS-2021 * Basis: Akademik Tryoshnikov * Method/Device: CTD/Rosette (CTD-RO)
NABOS2021_3 * Latitude: 81.402667 * Longitude: 125.987333 * Date/Time: 2021-09-16T02:44:43 * Elevation: -3879.0 m * Location: Arctic Ocean * Campaign: NABOS-2021 * Basis: Akademik Tryoshnikov * Method/Device: CTD/Rosette (CTD-RO)
Comment:
The data is processed from raw measurements to quality checked parameters (the bad data was deleted).
QF - quality flag:
0 - good quality
1 - unknown quality
4 - questionable quality
8 - bad quality
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Polyakov, Igor | |||
| 2 | Latitude of event | Latitude | Polyakov, Igor | |||
| 3 | Longitude of event | Longitude | Polyakov, Igor | |||
| 4 | Date/Time of event | Date/Time | Polyakov, Igor | |||
| 5 | Elevation of event | Elevation | m | Polyakov, Igor | ||
| 6 | Station label | Station | Polyakov, Igor | |||
| 7 | Pressure, water | Press | dbar | Kusse-Tiuz, Nikita | CTD, Sea-Bird, SBE 911plus | |
| 8 | DEPTH, water | Depth water | m | Kusse-Tiuz, Nikita | Calculated | Geocode |
| 9 | Temperature, water | Temp | °C | Kusse-Tiuz, Nikita | CTD, Sea-Bird, SBE 911plus | |
| 10 | Salinity | Sal | Kusse-Tiuz, Nikita | Calculated | PSU | |
| 11 | Bottle number | Bottle | # | Gangnus, Ivan | ||
| 12 | Oxygen, dissolved | DO | ml/l | Vesman, Anna | Titration, Winkler | |
| 13 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of oxygen, dissolved [ml/l] | |
| 14 | Oxygen, dissolved | DO | % | Gangnus, Ivan | Calculated | |
| 15 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of oxygen, dissolved [%] | |
| 16 | pH | pH | Alekseeva, Natalya | Potentiometric titration, Metrohm 916 TiTouch | ||
| 17 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of pH in situ | |
| 18 | Alkalinity, total | AT | mmol(eq)/l | Alekseeva, Natalya | Potentiometric titration, Metrohm 916 TiTouch | |
| 19 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Alkalinity, total [mmol(eq)/l] | |
| 20 | Phosphate | [PO4]3- | µmol/l | Gangnus, Ivan | Segmented flow analyzer, Seal Analytical | |
| 21 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Phosphate [µmol/l] | |
| 22 | Silicate | Si(OH)4 | µmol/l | Gangnus, Ivan | Segmented flow analyzer, Seal Analytical | |
| 23 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Silicate [µmol/l] | |
| 24 | Nitrate | [NO3]- | µmol/l | Gangnus, Ivan | Segmented flow analyzer, Seal Analytical | |
| 25 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Nitrate [µmol/l] | |
| 26 | Nitrite | [NO2]- | µmol/l | Gangnus, Ivan | Segmented flow analyzer, Seal Analytical | |
| 27 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Nitrite [µmol/l] | |
| 28 | Ammonium | [NH4]+ | µmol/l | Gangnus, Ivan | Spectrophotometer Shimadzu UV-1800 | |
| 29 | Quality flag | QF | Gangnus, Ivan | Ocean Data View Quality Flags (ODV) | QF of Ammonium [µmol/l] |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
30929 data points
Download Data (login required; moratorium until 2026-04-30)
View dataset as HTML (shows only first 2000 rows)