Keywords: Eddy Covariance IRGA Sonic.jpg en This is an open path eddy covariance system consisting of an ultrasonic anemometer to measure 3D air flow and infrared gas analyser IRGA to measure carbon dioxide This system is situated at the top of a 20 metre high tower above a forest own work by original uploader 2007-10-25 Veedar wikipedia en Veedar Original upload log page en wikipedia Eddy_Covariance_IRGA_Sonic jpg 2007-10-25 21 35 Veedar 1704×2272× 1199610 bytes <nowiki>This is an open path eddy covariance system consisting of an ultrasonic anemometer to measure 3D air flow and infrared gas analyser IRGA to measure carbon dioxide This system is situated at the top of a 20 metre high tower above a forest </nowiki> Anemometers Analysis |