Ice day

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Climatological knowledge

Day temperature T: max / med / min
Day temperature  T : max / med / min

Air temperature dependent days
  • T max  ≥ 35 ° C
    		•  Desert day
  • T max  ≥ 30 ° C
    		•  Hot day
  • T min ≥ 20 ° C
    		•  Tropical night
  • T max ≥ 25 ° C
    		•  Summer day
  • T med <15 ° C / 12 ° C
    		•  Heating day
  • T med ≥ 5 ° C
    		•  Vegetation day
  • T min <0 ° C
    		•  Frost day
  • T max <0 ° C
    		•  Ice day
    not uniformly defined: Cold day
    Weather- dependent days
    Cloud cover Bright day
    Cloud cover Cloudy day
    Cloud cover Foggy day
    Humidity / temperature Sultry day
    Precipitation Precipitation day
    Precipitation Rainy day
    Precipitation Hail day
    Precipitation Snow (cover) day
    storm Storm day
    storm Thunderstorm day

    An ice day is the meteorological-climatological term for a day on which the air temperature always remains below 0 ° C. If the temperature does not exceed freezing point for a long time, the term permafrost is also used. An ice day is always counted as a frost day, whereby the difference between frost and ice days is called frost change days .

    Mostly, however, the plural of ice days is used, which indicates the number of ice days for a period, for example a month or a winter . The sum of the ice days in a winter is a good comparison value for its severity. This makes it easy to compare the winters of different years or the climate of different regions in one period.

    Ice days were of great importance when ice was still obtained from natural cold for cooling purposes, especially on the ice gallows .

    List of readings in one place

    Ice days per year on a long-term average
    place Country Height * Days / a Averaging period
    Berlin-Dahlem Germany   23.2  
    Bremen Germany   17.9  
    Dresden Germany   19.1  
    Essen - Mülheim Germany   10.3  
    Frankfurt am Main Germany 112 16.5  
    Halle (Saale) Germany 88 20.6  
    Hamburg Germany 6th 20.3  
    Hanover Germany 55 19.6  
    Karlsruhe Germany 115 17.1  
    Kiel-Holtenau Germany 15th 22.8  
    Cologne - Leverkusen Germany 60 7.9  
    Magdeburg Germany 55 21.3  
    Munich Germany 519 23.4 1982-2014
    Stuttgart city ​​center Germany 312 14.6 1951-1980
    Mainz ( Marienborn ) Germany 153 11.3 1991-2017
    Dreis-Brück Germany 526 23.1 1994-2017
    Schifferstadt Germany 110 10.7 1991-2017
    Bolzano -LKH Italy (South Tyrol) 254 1.8 1981-2000
    Bregenz Austria 424 17.3 1971-2000
    Neusiedl Austria 135 21.1 1971-2000
    Graz University Austria 366 19.8 1971-2000
    Innsbruck University Austria 578 13.8 1971-2000
    Klagenfurt Austria 447 31.9 1971-2000
    Hörsching ( Linz Airport ) Austria 298 27.3 1971-2000
    Sankt Pölten Austria 272 25.8 1971-2000
    Salzburg Airport Austria 430 20.5 1971-2002
    Sonnblick 2 Austria 3105 239.0 1971-2002
    Vienna -Inner City Austria 171 18.6 1971-2002
    Zwettl - Pen 1 Austria 505 36.8 1971-2000
    Basel / Binningen Switzerland 316 15.8 1961-2009
    Bern / Zollikofen Switzerland 522 22.7 1961-2009
    Davos Switzerland 1594 64.2 1961-2009
    Geneva (Genève- Cointrin ) Switzerland 420 11.2 1961-2009
    Jungfraujoch 2 Switzerland 3580 274.8 1961-2009
    Lugano Switzerland 273 0.8 1961-2009
    Magadino / Cadenazzo Switzerland 203 2.0 1961-2009
    Samedan Switzerland 1708 72.0 1961-2009
    St. Gallen Switzerland 775 36.5 1961-2009
    Zurich / Fluntern Switzerland 555 26.1 1961-2009
    Source Switzerland: MeteoSwiss
    1 “Cold pole” of Austria
    2 Permafrost zone, partly currently with decreasing frost penetration

    See also

    Individual evidence

    1. ↑ Note: In contrast to the color markings for the temperature thresholds, the 0 ° C line on the graphic is on the border between turquoise and blue. →  Annual cycle of the graphic (animated)
    2. ↑ a b c d e f g h i j k l m n o Climatological knowledge days in the weather dictionary of the German Weather Service
    3. ↑ Germany : 15 ° C according to VDI 2067 ; Austria , Switzerland , Liechtenstein : 12 ° C according to Usance
    4. ↑ also T med ≥ 10 ° C: day of the main vegetation period
    5. ↑ Climate data: Ice days ( Memento of the original from March 6, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. MeteoSwiss  @1@ 2Template: Webachiv / IABot / www.bfs.admin.ch

    Web links

    Wiktionary: Eistag  - explanations of meanings, word origins, synonyms, translations