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Prompted by a desire to know more about the tides at Lympstone, I made some graphical tide tables for the Exe Estuary (click on the links below).
I hope you like them - do let me know if you have any suggestions for improvement.
Key:
- Blue means lots of water, red means not much.
- Day of month on the left.
- Time of day along the top and bottom (adjusted for British Summer Time where appropriate).
- Dashed yellow line indicates high tide.
- Day of week and lunar phase on the right.
- Sunrise and sunset shown by grey shading.
Technical:
- Tidal constants for Exmouth found by least squares fit to one year's high/low tide data.
- All calculations and graphics done with R.
- In 2019, Allan Reese wrote a very kind article in Significance magazine about these charts. I am grateful for his helpful suggestions for improvements, which I have now incorporated.
Historical:
- I am following in the footsteps of my grandfather, Edmund Jupp.
- He used to produce tide tables (initially on a BBC micro...) that looked like this.
Sea surface height animations:
- Global semidiurnal tide (amplitudes in cm): click here.
- Semidiurnal around the UK (amplitudes in cm): click here.
Animations showing the progress of high- and low-tide:
- High tide (blue) and low tide (red) progressing around the Atlantic click here.
- High tide (blue) and low tide (red) progressing around the North Atlantic click here.
- High tide (blue) and low tide (red) progressing around the British Isles click here.
- High tide (blue) and low tide (red) progressing up the English Channel click here.
