– n Index of refraction

Summary. At DMI a processing chain for GPS radio occultation measurements has been made. It has been used on both GPS/MET and Ørsted data for retrieving both temperature in the stratosphere and troposphere as well as water vapour in the troposphere. For nine days of CHAMP data the Ørsted data processing chain for GPS radio occultation retrieval has been applied. The resulting profiles have been compared to corresponding ECMWF profiles of water vapour and tempera-ture, resulting in a statistical description of the general agreement between the two datasets