Comparison of greenhouse gas fluxes derived from measurements carried out by means of equipment suites of the Yakovlev-40 aircraft laboratory and ZOTTO Observatory
P.N. Antokhin1, V.G. Arshinova1, M.Yu. Arshinov1, V.E. Aryasov2, B.D. Belan1, S.B. Belan1, D.K. Davydov1, G.A. Ivlev1, A.V. Kozlov1, A.V. Panov2, A.S. Prokushkin2, I.R. Putilin2, T.M. Rasskazchikova1, D.E. Savkin1, D.V. Simonenkov1, G.N. Tolmachev1, A.V. Fofonov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science, V.N. Sukachev Institute of Forest of Siberian Branch of the Russian Academy of Science, Krasnoyarsk, Russia
Keywords: atmosphere, vertical distribution, eddy covariance, carbon dioxide, methane, flux
Abstract
The ongoing global warming leads to the need for continuous monitoring of greenhouse gas concentrations and the magnitude of their fluxes. Gas exchange between terrestrial ecosystems and the atmosphere is mainly measured using eddy covariance, gradient, and chamber methods. This work compares greenhouse gas fluxes measured using the airborne eddy covariance technique and by means of the gas analysis system and meteorological sensors at the ZOTTO observatory. A description of instrument suites of the aircraft laboratory and observatory is presented. The comparison results showed that CO2 and CH4 fluxes measured by two different methods at the same altitudes coincide in sign, are close to each other in value for carbon dioxide, and differ by up to 2 times for methane. The results are of interest to specialists who study greenhouse gas fluxes using the eddy covariance method.
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