| Autor: |
Virolainen, Yana A., Timofeyev, Yury M., Kostsov, Vladimir S., Ionov, Dmitry V., Kalinnikov, Vladislav V., Makarova, Maria V., Poberovsky, Anatoly V., Zaitsev, Nikita A., Imhasin, Hamud H., Polyakov, Alexander V., Schneider, Matthias, Hase, Frank, Barthlott, Sabine, Blumenstock, Thomas |
| Předmět: |
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| Zdroj: |
Atmospheric Measurement Techniques Discussions; 2017, p1-34, 34p |
| Abstrakt: |
The cross-comparison of different techniques for atmospheric integrated water vapour (IWV) measurements is the essential part of their quality assessment protocol. We inter-compare the synchronised data sets of IWV values measured by Fourier-transform infrared spectrometer Bruker 125 HR (FTIR), microwave radiometer RPG-HATPRO (MW) and global navigation satellite system receiver Novatel ProPak-V3 (GPS) at St. Petersburg site between August 2014 and October 2016. Generally, all three techniques agree well with each other and therefore are suitable for monitoring IWV values at St. Petersburg site. We show that GPS and MW data quality depends on the atmospheric conditions; in dry atmosphere (IWV smaller than 6mm), these techniques are less reliable at St. Petersburg site than the FTIR method. We evaluate the upper bound of statistical measurement errors for clear-sky conditions as 0.33±0.03mm (2.0±0.3%), 0.54±0.03mm (4.5±0.3%), and 0.76±0.04mm (6.3±0.7%) for FTIR, GPS and MW methods, respectively. We conclude that accurate spatial and temporal matching of different IWV measurements is necessary for achieving the better agreement between various methods for IWV monitoring. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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