
Gaz, C and B are on their was home. As I write this they are above the Indian Ocean just over half way between Melbourne and Kuala Lumpur. It is one of the wonders of modern science that I can open my phone and find out where a plane is on a live map. Anyone who often picks up people from planes knows how unreliable airport sites are with their arrival and departure information. However, if I can see that a flight is in the middle of The Minch on it's way to Stornoway then I know exactly when to leave home so that I will be at the airport at the correct time.
So I shall track their progress across the globe until they land in Glasgow and are safe and sound on Scottish soil.
When I took the screenshot to the right they were half way across the Australian outback. Their plane is the little red one with the route shown.
However what really struck me was that with every airline apparently closed down what are all these planes doing in the sky?
Lots of them will be cargo planes but lots will not. I thought the numbers flying over China and the Far East in particular was particularly interesting . I know from Marcheline that the skies over the US are almost empty. Which made me realise that if there are that many planes when the skies are 'empty' how many are there usually. Actually looking at the pictures now (10:04) London airport looks quite busy and the Frankfurt to Los Angeles flight is somewhere above me. It suddenly brought it home to me that if this is the 'empty skies' level of aircraft pollution what is the 'normal' level. Somehow my academic knowledge had not computed with my perceived knowledge. In short there is one helluva lot of planes up there and, therefore, one helluva lot of pollution.