Volume 16, No. 3, March 2016, Pages 568-580 PDF(3.43 MB)
Regional Representativeness of CH4 and N2O Mixing Ratio Measurements at High-Altitude Mountain Station Kasprowy Wierch, Southern Poland
Jarosław M. Nęcki1, Michał Gałkowski1, Łukasz Chmura1,2, Christoph Gerbig3, Mirosław Zimnoch1, Damian Zięba1, Jakub Bartyzel1, Wojciech Wołkowicz4, Kazimierz Różański1
1 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30 30-059 Kraków, Poland
2 Institute of Meteorology and Water Management, National Research Institute, IMGW-PIB, Branch of Kraków, ul. Piotra Borowego 14, 30-215 Kraków, Poland
3 Max Planck Institute for Biogeochemistry, Jena, Germany
4 Polish Geological Institute, National Research Institute, Rakowiecka 4, 00-975 Warsaw, Poland
- Kasprowy Wierch (KAS) is a unique high-altitude station in Poland.
- The station’s CH4 and N2O footprint covers large region of central Europe.
- Simulations show the influence of Silesia (SCB) in 57.8% of the KAS record.
- Occasionally, SCB fraction is larger than 50%, with CH4 input higher than 20 ppb.
- Selected N2O point source impact on KAS record is negligible (fraction 0.04%).
Records of trace gas composition of the atmosphere originating from mountain stations are difficult to interpret in terms of continental gas balances due to complex topography and local wind patterns. Kasprowy Wierch station, located in the High Tatra Mountains, Poland, provides datasets to European GHG databases and can be used for regional and continental balances of trace gases in Earth’s atmosphere. Although it suffers from strong influence of local valley winds, the concentration record obtained at Kasprowy Wierch contains also a discernible fraction of methane (up to 100 ppb) emitted mainly by large regional source of this gas (Silesian Coal Basin) located ca. 150 km north-west of Kasprowy Wierch. Comparison of GOSAT satellite CH4 record in the pixel including High Tatras at the level of 850 hPa with the data obtained at Kasprowy Wierch mountain station revealed surprisingly good correlation, even for relatively short time intervals.
Methane; Nitrous oxide; High mountain station; Emission modeling.