DOI: 10.5281/zenodo.14018201
title: Vertically pointing doppler radar profiles (24 GHz Metek MRR-2) at Concordia Station (Dome C, Antarctica), aggregated to 5min, monthly netCDF archive

description: Vertical profiles along the first three kilometres of atmosphere above the ground (from 300 to 3000 m AGL) of equivalent radar reflectivity factor (Ze), Doppler velocity (W) and Doppler spectral width (Sw) from a 24-GHz vertically pointing Micro Rain Radar MRR-2 by METEK GmbH positioned at Concordia Station (Dome C, Antarctica).

Metadata available at https://antarcticdatacenter.cnr.it/geonetwork/srv/eng/catalog.search#/metadata/6dc25ff0-4c03-4ca8-af0d-cba06a411dc2 

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Example of netCDF file structure:

File "DMC_MRR_MeK_201901_5min.nc"

  dimensions:
    range = 31;
    time = UNLIMITED;   // (7736 currently)
  variables:
    float Ze(range=31, time=7736);
      :description = "Equivalent reflectivity factor relative to the most significant peak, dealiased, 5min non-logarithmic average. NaN means clear sky at the specified height.";
      :units = "dBZ";
      :_ChunkSizes = 31U, 1U; // uint

    long time_UTC(time=7736);
      :description = "Measurement time. Timestamp indicates the end of the aggregation interval, e.g. 01-Mar-2020 00:05:00 represents the average of the variables between 01-Mar-2020 00:00:01 and 01-Mar-2020 00:05:00.";
      :time_zone = "UTC";
      :units = "Seconds since 1970-01-01 00:00:00 (Unix time).";
      :_ChunkSizes = 512U; // uint

    float W(range=31, time=7736);
      :description = "Mean Doppler Velocity of the most significant peak, dealiased, 5min average. Value not available in clear-sky conditions.";
      :units = "m s^-1";
      :_ChunkSizes = 31U, 1U; // uint

    float height(range=31, time=7736);
      :description = "Height above instrument.";
      :units = "m";
      :_ChunkSizes = 31U, 1U; // uint

    float spectralWidth(range=31, time=7736);
      :description = "Doppler Spectral Width of the most significant peak, dealiased, 5min average. Value not available in clear-sky conditions.";
      :units = "m s^-1";
      :_ChunkSizes = 31U, 1U; // uint

  // global attributes:
  :title = "Micro rain radar data processed with IMProToo (Maahn, M. and Kollias, P., 2012), aggregated to 5min, monthly netCDF archive.";
  :comment = "IMProToo has been developed for improved snow measurements. Note that this data has been processed regardless of precipitation type.";
  :time_label = "Jan 2019";
  :source = "Micro Rain Radar 2 (MRR-2), METEK GmbH, at DMC (Antarctica), frequency: 24 GHz, power: 50 mW, antenna diameter: 60 cm [https://metek.de/product/mrr-2/]";
  :institution = "CNR-INO, Florence (IT)";
  :contact_person = "Gianluca Di Natale, CNR-INO, Florence (IT), gianluca.dinatale@ino.cnr.it";
  :location = "Concordia Station (Dome C, Antarctica, 75°06\'S, 123°21\'E, 3233 m a.s.l.)";
  :author = "Giacomo Roversi, Ca\' Foscari University, Venice (IT) and CNR-ISAC, Rome (IT), g.roversi@isac.cnr.it";
  :creation_date = "22-Oct-2024 17:32:24 UTC";
  :coverage = "Monthly coverage (Jan 2019): 90.3226 %";
  :time_resolution = "5 minutes";
  :history = "Created with IMProToo v0.107 [https://github.com/maahn/IMProToo], aggregated to 5 minutes temporal resolution with an average of the 1-minute values if least 3 out of 5 are not NaN.";