An interesting article!
http://journals.ametsoc.org/doi/10.1175/...14-00193.1
http://journals.ametsoc.org/doi/pdf/10.1...14-00193.1
/Egon
http://journals.ametsoc.org/doi/10.1175/...14-00193.1
http://journals.ametsoc.org/doi/pdf/10.1...14-00193.1
/Egon