At the "UFO Truth" Conference in Watford on 29 April 2017, a very kind gentleman gave me a copy of a book simply called "Clouds" by C.J.P. Cave published in 1943 by Cambridge University Press. The reason he gave me this is because it has,…

Saskia Messager, Nov 14th 2011   In the Netherlands today bleu sky and no persistant contrails   Webcam KNMI -> No persistant contrails www.knmi.nl/webcam/   Radiosonde weather.uwyo.edu/cgi-bin/sounding?region=europe&TYPE=TEXT:LIST&YEAR=2011&MONTH=11&FROM=1412&TO=1412&STNM=06260   Between approx. 10000 and 12000 meters altitude: Temp: -64°C< T < -53°C Relative humidity: 12%< rH< 32%  …