Swiss Polar Institute: Antarctic Circumnavigation Expedition (ACE)

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Published July 2, 2019 | Version 1.0
Dataset Open

Ice Nucleating Particle number concentration 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:

  • 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) cruise 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. We give INP number concentrations for sampling periods of 8 hours (or 2 hours in special cases) each.

Dataset contents

  • ACESPACE_ice_nucleating_particle_number_concentration_Tminus15degC.csv, data file, comma-separated values
  • data_file_header.txt, metadata, text format
  • README.txt, metadata, text format

For latitude and longitude NaN values are given, in cases positioning data was not available for given time period. INP number concentration values can be equal zero, indicating material sampled not being ice active at given temperature. In some cases, given INP number concentration values represent the upper detection limit of the used method.

Notes

The Antarctic Circumnavigation Expedition was made possible by funding from the Swiss Polar Institute and Ferring Pharmaceuticals. We acknowledge funding from DFG within SPP 1158 (Grant no. STR 453/12-1).

Files

ACESPACE_ice_nucleating_particle_number_concentration_Tminus15degC.csv

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Additional details

Related works

Is supplemented by
10.5281/zenodo.1443511 (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