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Mathes, Theresa; Held, Andreas (2025): Gradient system processed data from the expedition ARTofMELT, Arctic Ocean, 2023 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.974993 (DOI registration in progress), In: Mathes, T; Held, A (2025): Particle flux-gradient relationships for the expedition ARTofMELT, Arctic Ocean, 2023 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.974992 (DOI registration in progress)

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Published: 2025-04-01

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Abstract:
In spring 2023, near-surface particle and heat fluxes were measured using the gradient method during the ARTofMELT Arctic Ocean Expedition aboard the icebreaker Oden. The gradient system was used to measure the number of particles, temperature and wind speed at five different heights close to the surface. We divided the surface conditions into three categories: open water, open lead and closed ice. To measure the concentration of particles near the surface, we used a 1.50 m high linear actuator with a sensor board. The sensor board included a temperature sensor, a heat wire anemometer, an inlet connected to a condensation particle counter (CPC) and a distance sensor. The gradient system was set up to approach six different height levels in sequence. The distance to the surface from the inlet varied depending on the height level, with measurements taken at 5 cm, 10 cm, 17 cm, 32 cm, 67 cm and 129 cm.
Keyword(s):
aerosol flux; Arctic aerosol; ARTofMELT2023; fluxes; icebreaker oden; particle fluxes; particle number concentration; Particle source area; sensible heat flux
Documentation:
Readme: Particle flux-gradient relationships for the expedition ARTofMELT, Arctic Ocean, 2023
Project(s):
Atmospheric rivers and the onset of sea ice melt 2023 (ARTofMELT)
Funding:
German Research Foundation (DFG), grant/award no. 495992836: Vertical Turbulent Aerosol Particle Transport above open Water and Ice in the central Arctic during Summertime (APAICA) - Aerosol particle sources and transformation in the Arctic marine boundary layer
German Research Foundation (DFG), grant/award no. 521926906: Turbulent Aerosol Fluxes in the central Arctic during the ARTofMELT expedition
Coverage:
Median Latitude: 79.792006 * Median Longitude: 2.452081 * South-bound Latitude: 79.444569 * West-bound Longitude: -1.918209 * North-bound Latitude: 80.466461 * East-bound Longitude: 4.958374
Date/Time Start: 2023-05-17T13:46:39 * Date/Time End: 2023-06-10T05:43:44
Minimum HEIGHT above ground: 0.05 m * Maximum HEIGHT above ground: 1.29 m
Event(s):
ARTofMELT2023_underway_GS * Latitude Start: 79.832460 * Longitude Start: -1.918209 * Latitude End: 79.501980 * Longitude End: 3.690410 * Date/Time Start: 2023-05-17T13:46:39 * Date/Time End: 2023-06-10T05:43:44 * Campaign: ARTofMELT2023 * Basis: Oden * Method/Device: Gradient system
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeMathes, TheresaGeocode – UTC
2LATITUDELatitudeMathes, TheresaShip positionGeocode
3LONGITUDELongitudeMathes, TheresaShip positionGeocode
4HEIGHT above groundHeightmMathes, TheresaUltrasonic distance sensor, AZ Delivery, HC-SR04Geocode – Height of the sensor above the surface
5Particle numberCP_conc#/cm3Mathes, TheresaCondensation particle counter (CPC), TSI, 3007
6Wind speedffm/sMathes, TheresaHeat wire anemometer, Modern Device, Rev. PWindspeed at the sensor board
7Temperature, airTTT°CMathes, TheresaHeat wire anemometer, Modern Device, Rev. PTemperature at the sensor board
8Temperature, airTTT°CMathes, TheresaPrecision resistance thermometer, Electrotherm, PT100Temperature at the sensor board
9Temperature, airTTT°CMathes, TheresaPrecision resistance thermometer, Electrotherm, PT100at 8 cm
10Temperature, airTTT°CMathes, TheresaPrecision resistance thermometer, Electrotherm, PT100at 90 cm
11Temperature, airTTT°CMathes, TheresaPrecision resistance thermometer, Electrotherm, PT100at 120 cm
12Wind direction, relativeRelWindDirdegMathes, TheresaSonic anemometer, LI-COR, LI-550F TriSonica MiniRelative to the sensor board
13Wind speedffm/sMathes, TheresaSonic anemometer, LI-COR, LI-550F TriSonica Mini
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2172977 data points

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