Difference between revisions of "Frost day"

From Glossary of Meteorology
imported>Perlwikibot
(Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == frost day == </div> <div class="definition"><div class="short_definition">An [[observationa...")
 
imported>Perlwikibot
Line 9: Line 9:
 
   </div>
 
   </div>
  
<div class="definition"><div class="short_definition">An [[observational day]] on which [[frost]] occurs; one of a family of climatic indicators (e.g.,  [[thunderstorm day]], [[rain day]]).</div><br/> <div class="paragraph">The definition is somewhat arbitrary, depending upon the accepted criteria for a frost observation.  Thus, it may be 1) a day on which the minimum [[air temperature]] in the [[thermometer  shelter]] falls below 0&deg;C (32&deg;F); 2) a day on which a deposit of [[white frost]] is observed on the  ground; 3) in British usage, a day on which the [[minimum temperature]] at the level of the ground  or on the tops of low, close-growing vegetation falls to &minus;0.9&deg;C (30.4&deg;F) or below (also called a  &ldquo;day with ground frost&rdquo;); and perhaps others. The present trend is to drop such terms in favor of  something less ambiguous, such as &ldquo;day with minimum temperature below 0&deg;C (32&deg;F).&rdquo;</div><br/> </div>
+
<div class="definition"><div class="short_definition">An [[observational day]] on which [[frost]] occurs; one of a family of climatic indicators (e.g.,  [[thunderstorm day]], [[rain day]]).</div><br/> <div class="paragraph">The definition is somewhat arbitrary, depending upon the accepted criteria for a frost observation.  Thus, it may be 1) a day on which the minimum [[air temperature]] in the [[thermometer  shelter]] falls below 0&#x000b0;C (32&#x000b0;F); 2) a day on which a deposit of [[white frost]] is observed on the  ground; 3) in British usage, a day on which the [[minimum temperature]] at the level of the ground  or on the tops of low, close-growing vegetation falls to -0.9&#x000b0;C (30.4&#x000b0;F) or below (also called a  "day with ground frost"); and perhaps others. The present trend is to drop such terms in favor of  something less ambiguous, such as "day with minimum temperature below 0&#x000b0;C (32&#x000b0;F)."</div><br/> </div>
 
</div>
 
</div>
  

Revision as of 15:17, 20 February 2012



frost day

An observational day on which frost occurs; one of a family of climatic indicators (e.g., thunderstorm day, rain day).

The definition is somewhat arbitrary, depending upon the accepted criteria for a frost observation. Thus, it may be 1) a day on which the minimum air temperature in the thermometer shelter falls below 0°C (32°F); 2) a day on which a deposit of white frost is observed on the ground; 3) in British usage, a day on which the minimum temperature at the level of the ground or on the tops of low, close-growing vegetation falls to -0.9°C (30.4°F) or below (also called a "day with ground frost"); and perhaps others. The present trend is to drop such terms in favor of something less ambiguous, such as "day with minimum temperature below 0°C (32°F)."