Preprints
https://doi.org/10.5194/essd-2021-52
https://doi.org/10.5194/essd-2021-52

  01 Mar 2021

01 Mar 2021

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

The EUREC4A turbulence dataset derived from the SAFIRE ATR 42 aircraft

Pierre-Etienne Brilouet1, Marie Lothon1, Jean-Claude Etienne2, Pascal Richard2, Sandrine Bony4, Julien Lernoult3, Hubert Bellec3, Gilles Vergez3, Thierry Perrin3, Julien Delanoë5, Tetyana Jiang3, Frédéric Pouvesle3, Claude Lainard3, Michel Cluzeau3, Laurent Guiraud3, Patrice Medina1, and Theotime Charoy3 Pierre-Etienne Brilouet et al.
  • 1Laboratoire d’Aérologie, University of Toulouse, CNRS, UPS, Toulouse
  • 2CNRM, Météo-France, CNRS, Toulouse
  • 3SAFIRE, CNRS, Météo-France, CNES, Toulouse
  • 4LMD/IPSL, CNRS, Sorbonne University, Paris, France
  • 5Laboratoire Atmosphères, Milieux, Observations Spatiales/UVSQ/CNRS/UPMC, Guyancourt, France

Abstract. During the EUREC4A field experiment that took place over the tropical Atlantic ocean, East of Barbados, the French ATR 42 environment research aircraft of SAFIRE aimed at characterizing the shallow cloud properties near cloud-base, and the turbulent structure of the subcloud-layer. For this purpose, the aircraft payload included radar and lidar remote sensing, microphysical probes, a laser spectrometer, and meteorological sensors. In particular, the aicraft was equipped with a 5-hole radome nose and several temperature and moisture sensors allowing for measurements of wind, temperature and humidity at a fast rate (25 Hz). This paper presents the high frequency measurements made with these sensors and their translation in terms of turbulent fluctuations, turbulent moments and characteristic length scales of the turbulence. A particular focus is put on the calibration and the quality control of the air moisture measurements, which remain a challenge at fine scales. Level-2 and Level-3 data are distributed as an ensemble of NetCDF files available to the public at AERIS (https://doi.org/10.25326/128; Brilouet et al. 2020).

Pierre-Etienne Brilouet et al.

Status: open (until 26 Apr 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-52', Anonymous Referee #1, 05 Apr 2021 reply
  • RC2: 'Comment on essd-2021-52', Anonymous Referee #2, 16 Apr 2021 reply

Pierre-Etienne Brilouet et al.

Data sets

ATR-42 - Turbulence Data 25 Hz Pierre-Etienne Brilouet and Marie Lothon https://doi.org/10.25326/128

Pierre-Etienne Brilouet et al.

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Short summary
During the EUREC4A field experiment that took place over the tropical Atlantic ocean, East of Barbados, the French ATR 42 environment research aircraft of SAFIRE aimed at characterizing the shallow cloud properties near cloud-base, and the turbulent structure of the subcloud-layer. The high frequency measurements of wind, temperature and humidity and their translation in terms of turbulent fluctuations, turbulent moments and characteristic length scales of the turbulence are presented.