Carlisle Rainfall 1757-1783

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Paul C
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Carlisle Rainfall 1757-1783

Post by Paul C » Thu Oct 09, 2014 5:29 pm

Darren very kindly found this at a local library ( I think) and made a copy for me. I have added the data to a spreadsheet and converted the readings into millimetres. At the bottom of the chart is a direct comparison with data from RAF Carlisle (14MU) rainfall averages 1961-1990.

Both sites are comparable in altitude, and within 3 miles or so of each other. I am guessing that Abbey Street may have been sheltered and inferior equipment and this may account for the differences. Or has our climate changed ?
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Re: Carlisle Rainfall 1757-1783

Post by Carl M » Thu Oct 09, 2014 6:18 pm

Interesting, though as you say Paul being ''sheltered and inferior equipment'' depends on what sort
of gauge was in use then plus height and shelter.
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Re: Carlisle Rainfall 1757-1783

Post by darrog » Thu Oct 09, 2014 7:17 pm

Paul - don't forget what I said about the 'Little Ice age' - it will have had an impact
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Re: Carlisle Rainfall 1757-1783

Post by darrog » Thu Oct 09, 2014 7:19 pm

Also to put this Carlisle data into an historical context, an extract from a little piece of mine:

In the archives at Carlisle I have found the monthly rainfall records for Carlisle for the years 1757 – 1783 (part of which were published in 'The life of Dr. John Heysham M.D' – Pb 1870 – rainfall readings and general weather observations taken by Dr. Carlyle who '..kept an account of the quantity of rain which fell at Carlisle during 1757-76.’)
This is one of the very earliest rainfall records in Great Britain, only the records of a Mr. Townley (Townley, Lancs 1677 - 1705), Rev. W. Derham (Upminster 1696 -1714) and Thomas Barker (Rutland 1736 - 1794) appear to be older.
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Re: Carlisle Rainfall 1757-1783

Post by Anne » Fri Oct 10, 2014 11:15 pm

The thing is, he was probably using the same equipment throughout so the figures should be consistent with themselves. They do appear low and it would be interesting to know if other very early records are all lower then the present day?

Do we have any indication of what the equipment was like or exactly where in Abbey Street it was sited?

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Re: Carlisle Rainfall 1757-1783

Post by Paul C » Mon Oct 13, 2014 5:25 pm

It gives the grid reference as NY(35) 400559
82feet Above Sea Level ( 25m )

Dr Carlyle at Carlisle, Cumberland

( may need to do some googling with name and check or ordnance survey maps etc

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Re: Carlisle Rainfall 1757-1783

Post by Anne » Mon Oct 13, 2014 10:36 pm

So that GR is close to the Cathedral then. Still doesn't tell us if it was sheltered or open though. Guess we'll never know!
Anne

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