The natural Navigation: The Right Course, Naturally

The rape flowers are coming into bloom over the South Downs, but they don’t all bloom at the same time.

The crop tends to be on a field that will get a good amount of sunlight anyway, often south-facing, but even within the fields there are subtle shade differences. The flowers tend to appear first in the south-facing dips in the land. This is probably because they are getting plenty of sun, but being sheltered from the cooling winds. As a general rule, nature moves faster the warmer things are.

This morning brought with it a nice thick radiation fog, which the sun will probably burn off soon. There is not forecast to be much wind today, but even a breeze deals with radiation fog, usually anything over 12 knots.

No visible sun, no discernible wind, these are the conditions that remind us that the trees reflect their environment over a long period. They act as a giant USB stick of data about thousands of days of sun and wind. All we need to do is tune our senses and look for it. The thin branch in the bottom left of the picture has been curved upwards by the prevailing southwest winds over time.

On outdoor courses one of the ways that I try to keep participant’s senses sharp is by telling them that I expect them to spot something that I have not, even if we are walking a route that I know well.

This photo from the Pathfinder course on Saturday shows a phenomenon that I am very familiar with, but an example that my trainee, Guy, spotted before me.

There are a lot of great wayfinding methods that revolve around deducing prevailing wind direction. It is always worth looking for lee build-up. It works in most parts of the world, and doesn’t matter whether we are looking for snow, sand or leaves. In this case last year’s dead and discarded corn leaves and husks lie in the lee of the westerly winds that had been dominating for the past…

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When talking about heat and wind in the context of chillies, there is a risk that we might start to think some very un-navigational thoughts…

… however, this is a risky business, so here are two jalapeno chillies. One lived its life in a south-facing greenhouse, the other lived near it, outside near a south-facing wall. They both received identical amounts of sunlight. They both grew in the same soil and received plenty of water. The only serious differences to their environments were the temperature and wind exposure.

It is not too hard to see that nature is quite fussy about its environment and it is this fussiness that can give us a helping hand. It is sometimes possible to deduce useful things about the elements from two examples of the same species. One big example of this can sometimes be found in the different look and feel of two…

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On some days it is easier than others to tell which way the wind blows.

Today we enjoyed a nice 30kts/Force 7/35mph/56kph, depending how you like your porridge.