© Onyema Ogueri

New Denham, Uxbridge, United Kingdom of Great Britain and Northern Ireland

Latitude: 51° 33' 11'' N

Longitude: 0° 29' 35'' W

06 December 2014 1200 (Local Time)

Image P/S code: P.11.4.3

Image I.D.: 4070

• Images & related info Other Images Images of 1987 edition
• 

  White dew

  This picture shows, in extreme close-up, a couple of dew drops that have frozen. This type of deposit is known as white dew. It should not be confused with hoar frost. Note, however, that microscopic crystals of hoar frost have formed on the blade of grass and on the surface of the frozen dew drops.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Onyema Ogueri
  New Denham, Uxbridge, United Kingdom of Great Britain and Northern Ireland
  Latitude: 51° 33' 11'' N
  Longitude: 0° 29' 35'' W
  06 December 2014 1200 (Local Time)
  
  
  Image P/S code: P.11.4.3
  Image I.D.: 4070
• 

  White dew and hoar frost

  This picture shows both white dew and hoar frost together on blades of grass. Hoar frost is a deposit of ice that is generally crystalline in appearance, while white dew is a deposit of water drops (dew) that have subsequently become frozen.

  On this occasion, an area of high pressure (1 027 hPa), covered southern England. Under clear skies, the air temperature at Wokingham fell from a maximum of 5 °C the previous day to –7 °C overnight. The temperature at grass level fell below 0 °C at around 1540 hours the previous afternoon and reached a minimum overnight of –10 °C.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © George Anderson
  Wokingham, England, United Kingdom of Great Britain and Northern Ireland
  Latitude: 51° 25' 5'' N
  Longitude: 0° 51' 48'' W
  23 January 2015 0951 (Local Time)
  
  
  Image P/S code: S.11.4.3
  Image I.D.: 4046