Swiss Polar Institute: Antarctic Circumnavigation Expedition (ACE)
Published December 10, 2020 | Version 1.1
Dataset Open

Ice Nucleating Particle number concentration from low-volume sampling over the Southern Ocean during the austral summer of 2016/2017 on board the Antarctic Circumnavigation Expedition (ACE).

Creators

  • 1. Leibniz Institute for Tropospheric Research, Leipzig, Germany
  • 2. ETH Zürich; MeteoSwiss, Payerne, Switzerland
  • 3. Paul Scherrer Institute, Villigen, Switzerland
  • 4. Finnish Meteorological Institute, Helsinki, Finland
  • 5. University of Helsinki, Finland

Contributors

Data curator:

Data manager:

  • 1. Leibniz Institute for Tropospheric Research, Leipzig, Germany
  • 2. ETH Zürich; MeteoSwiss, Payerne, Switzerland
  • 3. Paul Scherrer Institute, Villigen, Switzerland
  • 4. Finnish Meteorological Institute, Helsinki, Finland
  • 5. University of Helsinki, Finland
  • 6. Swiss Polar Institute, Lausanne, Switzerland

Description

Dataset abstract

Ice nucleating particles (INP) are a subclass of atmospheric aerosol particles, which can force heterogeneous freezing of cloud droplets at temperatures above -38 degrees C. In contrast, ice particles form from cloud droplets at temperatures below -38 degrees C due to homogeneous freezing, without INP. Due to their abundance, these particles can affect micro-physical properties of clouds, while acting as INP. During the Antarctic Circumnavigation Expedition (ACE) around the Southern Ocean, off-line filter sampling was performed. Filters were stored on the ship and analysed after the cruise at Leibniz-Institute for Tropospheric Research (TROPOS) concerning INP abundance. Here, we give INP number concentrations for sampling of 8 hour periods.

Dataset contents

  • ACESPACE_ice_nucleating_particles_frozen_fraction_from_lowvolume_filters.csv, data file, comma-separated values
  • ACESPACE_ice_nucleating_particles_number_concentration_from_lowvolume_filters.csv, data file, comma-separated values
  • data_file_header_frozen_fraction.txt, metadata, text format
  • data_file_header_number_concentration.txt, metadata, text format
  • README.txt, metadata, text format
  • change_log.txt, metadata, text format

Change log

v1.1 - data files updated

  • change dataset title to reflect low-volume sampling method
  • addition of INP number concentration data from different temperatures
  • addition of fraction of frozen droplets data
  • addition of field blank filter data
  • create separate data_file_header files
  • add change log

v1.0 - initial release of dataset

 

Notes

The Antarctic Circumnavigation Expedition (ACE) was a scientific expedition carried out under the auspices of the Swiss Polar Institute, supported by funding from the ACE Foundation and Ferring Pharmaceuticals. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority programme "Antarctic Research with comparative investigations in the Arctic sea ice areas" SPP 1158 (grant STR 453/12-1).

Files

ACESPACE_ice_nucleating_particles_frozen_fraction_from_lowvolume_filters.csv

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Additional details

Related works

Is compiled by
Software: 10.1109/MCSE.2007.53 (DOI)
Is supplemented by
Report: 10.5281/zenodo.1443511 (DOI)
Journal article: 10.1175/BAMS-D-18-0187.1 (DOI)
References
Journal article: 10.1029/2019GL082311 (DOI)
Journal article: 10.5194/amt-11-5315-2018 (DOI)

References

  • Hartmann, M., Blunier, T., Brügger, S. O., Schmale, J., Schwikowski, M., Vogel, A., Wex, H., and Stratmann, F.: Variation of ice nucleating particles in the European Arctic over the last centuries, Geophys. Res. Lett., 46, https://doi.org/10.1029/2019GL082311, 2019.
  • Polen, M., Brubaker, T., Somers, J., and Sullivan, R. C.: Cleaning up our water: reducing interferences from nonhomogeneous freezing of "pure" water in droplet freezing assays of ice-nucleating particles, Atmos. Meas. Tech., 11, 5315-5334, https://doi.org/10.5194/amt-11-5315-2018, 2018.
  • Fernando Pérez, Brian E. Granger, IPython: A System for Interactive Scientific Computing, Computing in Science and Engineering, vol. 9, no. 3, pp. 21-29, May/June 2007, doi:10.1109/MCSE.2007.53. URL: https://ipython.org
  • Python Software Foundation. Python Language Reference, version 2.7.14. Available at http://www.python.org