Andy reminded me that I had written up a quick-n-dirty spreadsheet that calculated temp spread, thermal index, lapse rates, glide ratios with a bunch of parameters, altitude lost, time to goal, and indicated airspeed at altitude. I did it in Numbers v.8 but exported a copy to Excel too. It's not nearly as pretty in Excel but it should work the same. Everyone should know how to calculate the...
read article ....Soaring Birds - A Guide
A guide to the birds we find while desperately hoping for help.
soaring_birds_guide.pdf
(from WeatherJack: http://s214580749.websitehome.co.uk/bird/birds-soaring.html)
soaring_birds_guide.pdf
(from WeatherJack: http://s214580749.websitehome.co.uk/bird/birds-soaring.html)
