Wednesday 14th November 2018
One of the most stunning signs of Autumn is the turning of the leaves. The chilly temperatures and decreasing light, as days begin to shorten stop the trees producing chlorophyll. This is the green pigment that helps leaves capture sunlight to power photosynthesis. As green fades, the leave’s other pigments, such as the red, orange and yellow shine through.
Autumn begins when the centre of the sun crosses Earth’s equator. As Earth continues its path around the sun, days become shorter and nights become longer. The Earth’s orbit around the Sun has very little effect over the Seasons on Earth. Instead, it the tilt of Earth’s rotational axis, that creates seasons.
In the Northern Hemisphere autumn lasts from the autumnal equinox September 22 or 23 to the Winter Solstice 21 or 22 December. In the Southern Hemisphere, autumn lasts from March until June. The reason the equinoxes and solstices don’t always come on the same day is that Earth doesn’t circle the sun in exactly 365 days. The first day of autumn or the autumnal equinox, has 12 hours of daylight and 12 hours of darkness. The term equinox comes from the Latin words aequus, meaning equal and nox, meaning night.
In addition to the brilliant colours of the leaves, autumn signals another colourful spectacle, The Aurora Borealis, also known as the Northern Lights. According to NASA, autumn is “aurora season” because geomagnetic storms are about twice as frequent as the annual average during Autumn.
Here are some pictures of our beautiful woodland here in Rainford.