Atmospheric snow particle flux in the Central Arctic during MOSAiC 2019-20

Particle number flux of airborne snow particles was measured near-continuously at 1-min resolution above the sea ice surface from October 2019 to July 2020 during the year-round MOSAiC expedition. Sensors where mounted at 0.08 m and 10 m on the mast in MetCity on the MOSAiC ice floe drifting during the measurement period within an area of 79.2 N to 88.6 N and 2.7 W to 133.6 E.



The SPC measurements were part of the BAS measurement suite during MOSAiC to quantify sea salt aerosol production from blowing snow above sea ice and potential impacts on clouds and climate. Instrument and data quality checks during the year-round campaign were carried out by BAS scientists and the MOSAiC ATMOS team.





Funding was provided by UKRI Natural Environment Research Council (NERC) project "Sea Salt Aerosol above Arctic Sea Ice - sources, processes and climate impacts" (SSAASI-CLIM) grant NE/S00257X/1.



The project was part of the international Multi-disciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) with the tag MOSAiC20192020.

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Date (Creation)
2023-04-25
Date (Revision)
2023-04-25
Date (Publication)
2023-04-25
Date (released)
2023-04-25
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1.0
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https://doi.org/10.5285/7d8e401b-2c75-4ee4-a753-c24b7e91e6e9
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GB/NERC/BAS/PDC/01740
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https://data.bas.ac.uk/

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NE/S00257X/1
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Please cite this item as: Frey, M., Wagner, D., Kirchgaessner, A., Uttal, T., & Shupe, M. (2023). Atmospheric snow particle flux in the Central Arctic during MOSAiC 2019-20 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/7d8e401b-2c75-4ee4-a753-c24b7e91e6e9

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Organisation name Individual name Electronic mail address Role
British Antarctic Survey Frey, Markus Author

WSL Institute for Snow and Avalanche Research SLF

 		Wagner, David Author
British Antarctic Survey Kirchgaessner, Amelie Author
NOAA Physical Science Laboratory Uttal, Taneil Author
NOAA Physical Science Laboratory Shupe, Matthew Author
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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Maintenance and update frequency
As needed
Maintenance note
Completed
Global Change Master Directory (GCMD) Science Keywords
Theme

  • Arctic blowing snow

  • MOSAiC

  • drifting snow

  • snow particle drift density

  • snow particle number flux
Place

  • Arctic Ocean

GEMET - INSPIRE themes, version 1.0
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Data supplied under Open Government Licence v3.0
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doi
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  • Climatology, meteorology, atmosphere
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Begin date
2019-10-14
End date
2020-07-30

Vertical extent

Minimum value
0.1
Maximum value
10.0

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Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
Date (Publication)
2008-11-12
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European Petroleum Survey Group

EPSGadministrator@iogp.org

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urn:ogc:def:crs:EPSG::3031
Version

6.18.3

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NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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Methodology:

To measure airborne snow particles Snow Particle Counters (SPC) (SPC-95, Niigata Electric Co., Ltd) were employed manufactured and calibrated in Japan. The open-path SPC has a wind vane to steer into the prevailing wind direction and is equipped with a super-luminescent diode sensor, which acts as a constant light source during the measurement. Once a snow particle enters the beam first the light energy detected by the upwind sensor decreases then that seen by the down-wind sensor. These signals are converted to two successive voltage pulses, which are proportional to particle size. Each signal is classified into one of 64 size classes (30 to 500 μm particle diameter). The SPC measures number flux of snow particles within each size class. Number flux can be converted into number concentration or drift density by dividing by horizontal wind speed from the nearest wind speed sensor on the mast (Level 2.4 NOAA doi:10.18739/A2K649V1F). The project was part of the international Multi-disciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) with the tag MOSAiC20192020.





The latitude/longitude indicate the spatial bounds of the MOSAiC ice floe drift during the period covered by the entire dataset (October 2019 to July 2020).

Data collection:

Instrumentation used: Snow Particle Counters SPC-95 (Niigata Electric Co., Ltd)

Data quality:

The two SPC units (Unit 1104 at 0.08 m; Unit 1206 at 10 m) did run near-continuously from Oct 2019 until the end of Jul 2020, except during power cuts during March to May, and when the ice floe was abandoned for 5 weeks from mid-May 2020. SPC Unit 1104 started recording only from 2 Dec 2019. Calibrations were done for Unit 1104 on 19.06.2019 and for Unit 1206 on 26.09.2012. Unit 1206 showed occasionally malfunctioning: i) spurious small particle increases in the absence of drifting snow or precipitation, and ii) size spectra were clipped at the smaller sizes. In this data version no data were removed.

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English
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dataset
Date stamp
2023-04-25
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Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

polardatacentre@bas.ac.uk

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Keywords

Arctic blowing snow MOSAiC drifting snow snow particle drift density snow particle number flux
GEMET - INSPIRE themes, version 1.0

Atmospheric conditions
Global Change Master Directory (GCMD) Science Keywords

EARTH SCIENCE > Atmosphere > Precipitation > Snow


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