[NatureNS] Frost in the morning

Date: Sat, 10 Oct 2015 11:16:01 -0300 (ADT)
From: "rita.paul@ns.sympatico.ca" <rita.paul@ns.sympatico.ca>
To: naturens@chebucto.ns.ca
References: <904484737.68429.1444393880884.open-xchange@webmail.bellaliant.net> <BB70A87CFE8B8B4597E5A9D5EDDAB6FB548458F9@AS446.prov.gov.ns.ca>
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   <span style="font-size: 12pt;">Sounds reasonable Andrew.</span>
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   <span style="font-size: 12pt;">The old Irishman at home ( his name wasn&#39;t McKenna ) used<br/></span>
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   <span style="font-size: 12pt;">to say &#34;For big spuds, the tops have to stay green until Oct 10&#34;</span>
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   <span style="font-size: 12pt;">Doesn&#39;t happen many years but a lot of green tops around yet.<br/></span>
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   <span style="font-size: 12pt;">One of these nights they will be black. Times don&#39;t change much!<br/></span>
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   <span style="font-size: 12pt;">Enjoy the fall<br/></span>
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   <span style="font-size: 12pt;">Paul<br/></span>
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   <span style="font-size: 12pt;">&#160;</span>
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   &#160;
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   On October 9, 2015 at 9:55 AM &#34;Hebda, Andrew J&#34; &#60;Andrew.Hebda@novascotia.ca&#62; wrote:
   <br/>&#62; 
   <br/>&#62; 
   <br/>&#62; 
   <br/>&#62; Hi Paul
   <br/>&#62; 
   <br/>&#62; I remember reading somewhere that the reason was that the sun would hit the top of the hills first, drawing heat upwards (convection?), that would then draw the colder air down the slopes to the hollows.. can&#39;t remember where I saw that, but it seems to make sense (from the point of physics of air mass movement)
   <br/>&#62; 
   <br/>&#62; Andrew
   <br/>&#62; 
   <br/>&#62; S________________________________________
   <br/>&#62; From: naturens-owner@chebucto.ns.ca [naturens-owner@chebucto.ns.ca] on behalf of rita.paul@ns.sympatico.ca [rita.paul@ns.sympatico.ca]
   <br/>&#62; Sent: October-09-15 9:31 AM
   <br/>&#62; To: naturens@chebucto.ns.ca
   <br/>&#62; Subject: [NatureNS] Frost in the morning
   <br/>&#62; 
   <br/>&#62; Hi All
   <br/>&#62; In the old days on the farm we would be out before the
   <br/>&#62; Sun in early October. Not so much anymore! Then we would notice
   <br/>&#62; that the white frost would form just as the sun broke the horizon
   <br/>&#62; on a morning like this.
   <br/>&#62; This morning that happened also. When I went out before sun up there
   <br/>&#62; was no white frost anywhere but half an hour latter everything was white.
   <br/>&#62; I assume it was enough to kill tender plants but we need wait and see.
   <br/>&#62; There used to be an explanation for that but I forget - I was never sure if
   <br/>&#62; it was correct or not! Perhaps someone will remember.
   <br/>&#62; Enjoy the beautiful day
   <br/>&#62; Paul
   <br/>&#62; 
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