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    "en": "Freeze"
  },
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    "en": [
      "Freeze event,",
      "Frost,",
      "Killing frost"
    ]
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  "definition": {
    "en": "A freeze is an air temperature equal to or less than the freezing point of water (D °C) (adapted from WMO, 1992). <br /> <p>WMO, 1992. <a href=\"https://library.wmo.int/doc_num.php?explnum_id=4712\">International Meteorological Vocabulary. World Meteorological Organization (WMO)</a>. Accessed 18 November 2019.</p>"
  },
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    "en": [
      "source:UNDRR HIPS"
    ]
  },
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    "en": [
      "Technically, the word ‘frost’ refers to the formation of ice crystals on surfaces, either by freezing of dew or a phase change from vapour to ice; however, the word is widely used by the public to describe a meteorological event when crops and other plants experience freezing injury (FAO, 2005). Growers often use the terms ‘frost’ and ‘freeze’ interchangeably, with the vague definition being ‘an air temperature less than or equal to 0°C’. A ‘frost’ is the occurrence of an air temperature of 0°C or lower, measured at a height of between 1.25 and 2.0 m above soil level, inside an appropriate weather shelter. Water within plants may or may not freeze during a frost event, depending on several avoidance factors (e.g., supercooling and concentration of ice nucleating bacteria). A ‘freeze’ occurs when extracellular water within the plant freezes (i.e., changes from liquid to ice) (FAO, 2005)."
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