-WAVVAP) campaign

• Main Authors: Beat Deuber, Alexander Haefele, Dietrich G Feist, Lorenz Martin, Niklaus Kämpfer, Gerald E Nedoluha, Vladimir Yushkov, Sergey Khaykin, Rigel Kivi, Holger Vömel, Citation : Deuber, B, A Haefele, D G Feist, L Martin, N Kämpfer, G E Nedoluha, V Yushkov, S Khaykin, R Kivi, H Vömel
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Northern Finland
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1039.7379; http://web.gps.caltech.edu/%7Evijay/EGU%20Presentations/Remote%20Sensing/Deuber-etal-05.pdf

[1] We present a validation study for the ground-based Middle Atmospheric Water Vapour Radiometer (MIAWARA) operating at 22 GHz. MIAWARA measures the water vapor profile in the range of 20-80 km. The validation was conducted in two phases at different geographical locations. During the first operational period the radiometer was operated at middle latitudes in Bern, Switzerland, and the measured water vapor profiles were compared with the HALOE satellite instrument. The agreement between HALOE and MIAWARA was for most altitudes better than 10%. The agreement between the balloon instruments and MIAWARA was better than 2% for a total number of 10 comparable flights. This showed the potential of MIAWARA in water vapor retrieval down to 20 km. In addition, the northern Finland MIAWARA profiles were compared with POAM III water vapor profiles. This comparison confirmed the good agreement with the other instruments, and the difference between MIAWARA and POAM was generally less than 8%. Finally, the tipping curve calibration was validated with tipping curve measurements of the All-Sky Multi Wavelength Radiometer (ASMUWARA) which was operated 10 months side by side with MIAWARA. The agreement of the tropospheric opacity derived from these tipping curves agree within 1%.