Rayleigh Scattering
However clear the sky, however free from even the wispiest of clouds, the sky is never uniformly blue. It is always closer to white near…
Find out how to read water
Tag: clouds
BBC Winter Wonderland
I did a short piece for BBC Inside Out that was broadcast on Monday evening. It can be viewed via this link (within the UK,…
Mackerel Sky
Following some bad weather recently, I saw the beautiful ‘mackerel sky’ above. A mackerel sky can be used to forecast weather, but it is at…
The Difference Between Mist and Fog
Thank you to everyone who has come to my talks on How to Read Water recently. The morning after the Dartmoor talk, I took the…
Contrail Shadows
My thanks to Alan Gibson, author of the Urbane Forager blog and book, for sending me these great images of a contrail shadow. (Contrails are…
Joshua Slocum and the Birds
My thanks to Pertti Pesonen for reminding me of these passages in Joshua Slocum’s classic, ‘Sailing Alone Around the World’: On the 12th, some hundred…
From Top to Bottom
I usually encourage people to scan for outdoor clues by looking from top to bottom – astronomy, weather, ground – and the reason can be…
Sharpening Skills at the Start and End of the Day
Just before you see the sun rise in the morning or just after it has set for you in the evening, try to work out…