17 Feb 2021

17 Feb 2021

Review status: this preprint is currently under review for the journal ESSD.

NYTEFOX – The NY-Ålesund TurbulencE Fiber Optic eXperiment investigating the Arctic boundary layer, Svalbard

Marie-Louise Zeller1,, Jannis-Michael Huss2,, Lena Pfister2,a, Karl E. Lapo2,3, Daniela Littmann1, Johann Schneider2, Alexander Schulz1, and Christoph K. Thomas2,3 Marie-Louise Zeller et al.
  • 1Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
  • 2Micrometeorology Group, University Bayreuth, Bayreuth, Germany
  • 3Bayreuth Center of Ecology and Environmental Research, BayCEER, University Bayreuth, Bayreuth, Germany
  • anow at: Department of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, Austria
  • These authors contributed equally.

Abstract. The NY-Ålesund TurbulencE Fiber Optic eXperiment, NYTEFOX, was a field experiment at the Arctic site Ny-Ålesund (11.9° E, 78.9° N) and yielded a unique meteorological data set. These data describe the distribution of heat, airflows, and exchange in the Arctic boundary layer for a period of 14 days from 26 February to 10 March 2020. NYTEFOX is the first field experiment to investigate the heterogeneity of airflow and its transport in temperatures, wind, and kinetic energy in the Arctic environment using the Fiber-Optic Distributed Sensing (FODS) technique for horizontal and vertical observations. FODS air temperature and wind speed were observed at a spatial resolution of 0.127 m and 9 s in time along a horizontal array of 700 m at 1 m height above ground level (agl) and along three 7 m vertical profiles. Ancillary data were collected from three sonic anemometers and an acoustic profiler (miniSodar, SOund Detection And Ranging) yielding turbulent flow statistics and vertical profiles in the lowest 300 m agl, respectively. The observations from this field campaign are publicly available on Zenodo ( and supplement the data set operationally collected by the Basic Surface Radiation Network (BSRN) meteorological data set at Ny-Ålesund, Svalbard.

Marie-Louise Zeller et al.

Status: open (until 14 Apr 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-37', Anonymous Referee #1, 03 Mar 2021 reply

Marie-Louise Zeller et al.

Data sets

NYTEFOX - The NY-Ålesund TurbulencE Fiber Optic eXperiment investigating the Arctic boundary layer, Svalbard Jannis-Michael Huss, Marie-Louise Zeller, Lena Pfister, Karl E. Lapo, Daniela Littmann, Johann Schneider, Alexander Schulz, and Christoph K. Thomas

klapo/pyfocs v0.5 (Version v0.5) Karl Lapo and Anita Freundorfer

Marie-Louise Zeller et al.


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Short summary
The Boundary Layer (BL) is well understood when convectively mixed, yet we lack this understanding when it turns stable and no longer follows classic similarity theories. The NYTEFOX campaign collected a unique meteorological data set in the Arctic BL of Svalbard during polar night, where it tends to be highly stable. Using innovative Fiber-Optic Distributed Sensing we are able to provide unique insight into atmospheric motions across large distances resolved continuously in space and time.