Study of trends of total CO and CH4 contents over Eurasia through analysis of ground-based and satellite spectroscopic measurements


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Аннотация

Trends of total CO and CH4 contents are estimated from satellite AIRS spectrometer data for the Eurasian domain (0–180° E, 0–85° N) for different time periods and seasons. The results are compared with similar estimates, obtained from ground-based spectroscopic measurements at seven stations of the European Network for the Detection of Atmospheric Composition Change (NDACC) and at measurement sites of the Institute of Atmospheric Physics, Russian Academy of Sciences (Zvenigorod Scientific Station (ZSS), Zotto, and Beijing) and St. Petersburg University (Peterhof), located in the study domain. Overall, the total CO decreased over northern Eurasia during the period of 2003–2015 at a rate of 0.05–1.5%/yr, depending on the region; while the total CH4 increased at a rate of 0.16–0.65%/yr. Since 2007, the total CO has been increased during summer and autumn months in most mid- and high-latitude Eurasian background regions, and the total CH4 growth has been accelerated. Changes in the global photochemical system, proceeding against the background of global climate change and, in particular, changes in the “sources/sinks” ratio for minor atmospheric admixtures are suggested as possible causes of this dynamic of trends of the atmospheric CO and CH4 contents.

Авторлар туралы

V. Rakitin

Obukhov Institute of Atmospheric Physics

Хат алмасуға жауапты Автор.
Email: vadim@ifaran.ru
Ресей, Moscow, 119017

N. Elansky

Obukhov Institute of Atmospheric Physics

Хат алмасуға жауапты Автор.
Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

N. Pankratova

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

A. Skorokhod

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

A. Dzhola

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

Yu. Shtabkin

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

P. Wang

Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
ҚХР, Beijing, 100029

G. Wang

Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
ҚХР, Beijing, 100029

A. Vasilieva

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

M. Makarova

St. Petersburg State University

Email: n.f.elansky@mail.ru
Ресей, Peterhof, 198504

E. Grechko

Obukhov Institute of Atmospheric Physics

Email: n.f.elansky@mail.ru
Ресей, Moscow, 119017

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© Pleiades Publishing, Ltd., 2017