Results of the CNN I campaign

NOTE: results not available anymore via links below!

• Preliminary level 0 results of CNN I (last update: 27 September 2000
  
  
• Level 1a results of CNN I (last update: 13 February 2001)

  Some notes on the level1a results:

  • LWP/IWV from Bern and Chilbolton are unreliable and can in the best case be used to identify cloud variations.
  • Some stations like Lindenberg and Onsala have very close radio soundings which is obvious in the very good agreement with the microwave derived IWV. The spatial and sometimes the different elevation (Kiruna) of both places can cause slight discrepancies.
  • After rain events it can take some time until the radiometers are completely dry and give meaningful values. This is quite well captured in the plots.
  • A regression algorithm does not necessarily results in a zero LWP in cloud-free condition. A derivation of max. 30 gm^-2 from zero during cloud free conditions is in the normal range.