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Author Topic: question about baro pressure and sea level.  (Read 288 times)
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Tugmistress
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« on: January 20, 2009, 09:59:55 AM »

ok, we all know that tide tables are published for various ports etc, i am assuming they are published with a 'standard' in mind ie barometric pressure, but is there some sort of conversion where you can work out that if your baro reading is say 10mb below this average that the tide will be an extra Huh? ft above the prediction?

bet that's as clear as mud lol
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Tugmistress
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« Reply #1 on: January 20, 2009, 10:40:19 AM »

ok forget that question, i had a brainstorm and re googled and got the answer Cheesy

if you're interested it basically 10mb drop in pressure = 10cm rise in sea level (very rough guide but will do for i want)
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munrobaggins
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« Reply #2 on: January 20, 2009, 11:31:47 AM »

I remember trying without real success to find the answer to that question a while back....Have you got the link still for the reference  answer...'cos I still can't find an answer on Google even now!!!  Sad Sad Roll Eyes
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Baggins
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« Reply #3 on: January 20, 2009, 11:51:07 AM »

i used this one
http://www.brighton-hove.gov.uk/index.cfm?request=c1164148

Smiley

just on my way out to work so will look for the other link i found too, the search term i used was 'effect of barometric pressure on sea level'.
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munrobaggins
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« Reply #4 on: January 20, 2009, 01:19:07 PM »

Thanks for that...My use of key words on Google was obviously not up to scratch, although I was getting results without the detail that you had found.....Typical!!
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Baggins
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« Reply #5 on: January 20, 2009, 01:28:37 PM »

you might like this link i found, how to give me a headache in one easy lesson!

http://www.sandhurstweather.org.uk/barometric.pdf

i found a nice easy to read scale that gave mb at certain levels at 0c (ithink it was) and as i am near as damn it 300 asl i found my own guessing of 9mb to 'light' was nearly right, seems i should be about 11mb 'light' so have now put this crrection into wd. ....
http://www.sensorsone.co.uk/altitude-pressure-units-conversion.html
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munrobaggins
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« Reply #6 on: January 20, 2009, 01:33:48 PM »

Headache it is.. Grin  .that was the sort of info that I kept getting previously.. Sad
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Baggins
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