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#1
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Frosts
Does anyone know the differences between frost, air frost and ground
frost and the implication each has for plants. Thanks John. John In limine sapientiae |
#2
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Frosts
"John Edgar" wrote in message ... Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. Thanks John. John Good old auntie Beeb : http://www.bbc.co.uk/weather/feature...cs_frost.shtml Jenny "~) |
#3
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Frosts
On Tue, 23 Sep 2003 14:48:01 +0200, "JennyC" wrote:
"John Edgar" wrote in message .. . Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. Thanks John. John Good old auntie Beeb : http://www.bbc.co.uk/weather/feature...cs_frost.shtml Jenny "~) Ta, I'll have a look John John In limine sapientiae |
#4
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Frosts
On Tue, 23 Sep 2003 13:12:31 +0100, John Edgar wrote:
Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. The beeb link already posted is good. In relation to plants a ground frost is probably the worse as that is temperature measured at ground level near foliage and *generally* speaking you'll get a ground frost forming before the actual air temperature has reached 0C. We had a moderate ground frost last night, still unthawed in the shade at 0900 despite bright clear sunshine since dawn (0730) and the air temp rising from 0.8C to 8C in those 1 1/2hrs. -- Cheers Dave. pam is missing e-mail |
#5
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Frosts
In article , John Edgar
writes Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. As I understand it, air frost is freezing or frozen mist and ground frost is freezing or frozen dew. Both are more dangerous if wind is blowing and both vary in volume with humidity. -- Alan & Joan Gould - North Lincs. |
#6
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Frosts
"Alan Gould" wrote in message ... In article , John Edgar writes Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. As I understand it, air frost is freezing or frozen mist and ground frost is freezing or frozen dew. Both are more dangerous if wind is blowing and both vary in volume with humidity. I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Franz |
#7
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Frosts
The message
from "Franz Heymann" contains these words: I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. You are correct. -- Rusty Hinge horrid·squeak&zetnet·co·uk http://www.users.zetnet.co.uk/hi-fi/tqt.htm |
#8
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Frosts
The message
from "Franz Heymann" contains these words: I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. You are correct. -- Rusty Hinge horrid·squeak&zetnet·co·uk http://www.users.zetnet.co.uk/hi-fi/tqt.htm |
#10
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Frosts
"Alan Gould" wrote in message ... In article , Franz Heymann notfranz. writes I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Neither air nor soil become frozen at zero temperature. Frost is frozen particles of moisture in the air or on the ground. I don't go by air frost/ground frost. I go by car frost, ie when you have to scrape it off the windscreens. First one today :-(( Steve |
#11
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Frosts
"shazzbat" wrote in message ... "Alan Gould" wrote in message ... In article , Franz Heymann notfranz. writes I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Neither air nor soil become frozen at zero temperature. Frost is frozen particles of moisture in the air or on the ground. I don't go by air frost/ground frost. I go by car frost, ie when you have to scrape it off the windscreens. First one today :-(( But on the other hand, it's a beautiful morning, so the early frost is a small price to pay :-)) Steve |
#12
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Frosts
"Alan Gould" wrote in message ... In article , Franz Heymann notfranz. writes I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Neither air nor soil become frozen at zero temperature. Frost is frozen particles of moisture in the air or on the ground. Both those statements are correct. So is my definition of the terms "air frost" and "ground frost" Franz -- Alan & Joan Gould - North Lincs. |
#13
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Frosts
"shazzbat" wrote in message ... "Alan Gould" wrote in message ... In article , Franz Heymann notfranz. writes I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Neither air nor soil become frozen at zero temperature. Frost is frozen particles of moisture in the air or on the ground. I don't go by air frost/ground frost. I go by car frost, ie when you have to scrape it off the windscreens. First one today :-(( That would be air frost. We have escaped it so far. Franz |
#14
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Frosts
On Wed, 24 Sep 2003 09:21:45 +0000 (UTC), Franz Heymann wrote:
I don't go by air frost/ground frost. I go by car frost, ie when you have to scrape it off the windscreens. First one today :-(( That would be air frost. No, technically it is a ground frost, ie a frost forming on a surface due to that surafce radiating heat and cooling below freezing. An air frost is when the temperature of the air in an standard stephenson screen (ie 1m above mown grass) is = 0C. Ground frosts can and do form with the air temperature well above 0C. Look back for that link to the BBC, it explains things very well. -- Cheers Dave. pam is missing e-mail |
#15
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Frosts
precisely
"Franz Heymann" wrote in message ... "Alan Gould" wrote in message ... In article , John Edgar writes Does anyone know the differences between frost, air frost and ground frost and the implication each has for plants. As I understand it, air frost is freezing or frozen mist and ground frost is freezing or frozen dew. Both are more dangerous if wind is blowing and both vary in volume with humidity. I thought air frost occurs when the temperature of the air falls below zero and ground frost occurs when the temperature of the soil falls below zero. Franz --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.516 / Virus Database: 313 - Release Date: 01/09/03 -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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