What is a Katabatic Wind?
Heavier gases sink, lighter gases rise. That is how a hot air balloon works: the warm air expands making it lighter than the surrounding air…
Heavier gases sink, lighter gases rise. That is how a hot air balloon works: the warm air expands making it lighter than the surrounding air…
My thanks to a helicopter pilot for this fascinating email and for permission to share it. And for adding the ‘ptarmigan altimeter’ to my collection!…
The following article by Tristan Gooley was published in Navigation News in March 2010. My research to date has failed to uncover another soul who…