7d8e401b-2c75-4ee4-a753-c24b7e91e6e9 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2023-04-25 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Atmospheric snow particle flux in the Central Arctic during MOSAiC 2019-20 2023-04-25 creation 2023-04-25 revision 2023-04-25 publication 2023-04-25 released 1.0 https://doi.org/10.5285/7d8e401b-2c75-4ee4-a753-c24b7e91e6e9 doi GB/NERC/BAS/PDC/01740 https://data.bas.ac.uk/ NE/S00257X/1 award 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 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. No credit. completed Frey, Markus British Antarctic Survey Researcher author Wagner, David WSL Institute for Snow and Avalanche Research SLF Researcher author Kirchgaessner, Amelie British Antarctic Survey Researcher author Uttal, Taneil NOAA Physical Science Laboratory Researcher author Shupe, Matthew NOAA Physical Science Laboratory Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Atmosphere > Precipitation > Snow theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Arctic blowing snow MOSAiC drifting snow snow particle drift density snow particle number flux theme Arctic Ocean place Atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions Data supplied under Open Government Licence v3.0 otherRestrictions Please cite the reference papers when using the data url url crossReference doi doi crossReference doi doi crossReference doi doi crossReference url url largerWorkCitation url url largerWorkCitation textTable eng utf8 climatologyMeteorologyAtmosphere -2.7 133.6 79.2 88.6 2019-10-14 2020-07-30 0.1 10.0 urn:ogc:def:crs:EPSG::5714 MSL height Not specific to any location or epoch. Hydrography. 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. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/plain text/csv bytes 137363456 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=7d8e401b-2c75-4ee4-a753-c24b7e91e6e9 WWW:LINK-1.0-http--link Get Data Download data download bytes 137363456 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=7d8e401b-2c75-4ee4-a753-c24b7e91e6e9 WWW:LINK-1.0-http--link Get Data Download data download dataset 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. asNeeded completed