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16 February 2004 Spectroscopic study of atmospheric methane and carbon monoxide variability near St. Petersburg, Russia
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Abstract
Methane (CH4) and carbon monoxide (CO) total column amounts (TCA) measured at the Research Institute of Physics of St. Petersburg State University (Russia) were used for: 1. study of temporal variability of CH4 and CO; 2. identification of source regions of CO and CH4 using trajectory analysis. CH4 and CO showed distinct annual cycle with the amplitude of about 3% and 25% correspondingly. Period of 1999-2002 has a significant decline of CH4 TCA for the St. Petersburg region. The suggested reason is hot and dry summers of 1998-2002. October 1998 - March 1999 is characterized by the strong irregular disturbances of CO TCA. Growth rates of CO TCA have changed at this period from (3.5±2.3)%/yr (for 1995-1998) up to (-2.1±1.5)%/yr (for 1999-2002). Enhanced CO and CH4 TCA levels are observed for air masses originated from the sectors of the North Russia, continental Russia and the Eurasia. Europe can be classified as moderately polluted territory. Clean air comes from the Baltic Sea, Arctic Ocean and Scandinavia. Distribution of CO pollution levels over sectors repeats qualitatively situation for CH4.
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Maria V. Makarova, Yuriy M. Timofeyev, and Anatoly V. Poberovski "Spectroscopic study of atmospheric methane and carbon monoxide variability near St. Petersburg, Russia", Proc. SPIE 5235, Remote Sensing of Clouds and the Atmosphere VIII, (16 February 2004); https://doi.org/10.1117/12.511101
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