Sea & Land breezes

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Sea & Land breezes

Postby Nick Gardner » 2012 Aug 10, 18:42

There seems to be two dominant wind directions here, northerly and southerly. Rather unusual? The southerly is easy to explain and is the sea breeze that blows on most days here Spring & Summer. But the northerly, could that be a land breeze as it generally occurs at night? Or could it be the result of cold air drifting down the valley towards the sea, or even a combination of the two?

The Otter Valley generally runs north-south.

Below are a selection of wind direction radars for the last few months, and are pretty typical:
winddirmarch2012.png
winddirmarch2012.png (8.11 KiB) Viewed 500 times

winddirmay2012.png
winddirmay2012.png (8.17 KiB) Viewed 500 times

winddirjuly2012.png
winddirjuly2012.png (7.95 KiB) Viewed 500 times


Do other people with stations near the coast experience the same?
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: Sea & Land breezes

Postby Len Wood » 2012 Aug 15, 16:26

Seems a very local effect of the valley to me Nick.

Can't say the plots are similar at Plymouth.

What is your perception of the wind direction at your site?
Do your data back up your experience?

For example, what is the wind direction for a westerly gale?
Len

Wembury, SW Devon coast
N50.33 W4.13
Altitude 83 m asl
Len Wood
 
Posts: 349
Joined: 2012 Jan 28, 16:12
Location: Wembury, coastal SW Devon, 83 m asl


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