 |
| Titel |
Spatial distribution of atmospheric constituents along the Arctic coast of Siberia |
| VerfasserIn |
Boris D. Belan, Mikhail Yu. Arshinov, Sergey B. Belan, Denis K. Davydov, Georgii A. Ivlev, Artem V. Kozlov, Valerii S. Kozlov, Jean-Daniel Paris, Philippe Nédélec, Mikhail V. Panchenko, Denis V. Simonenkov, Gennadii N. Tolmachev, Alexander V. Fofonov, Vladimir P. Shmargunov |
| Konferenz |
EGU General Assembly 2014
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250088572
|
| Publikation (Nr.) |
 EGU/EGU2014-2691.pdf |
|
|
|
|
|
| Zusammenfassung |
| Extensive airborne in-situ measurements of atmospheric trace gas species and aerosols over
the Siberian Arctic were carried out in July 2008 in the framework of the YAK-AEROSIB
and POLARCAT projects under the International Polar Year (IPY). During the campaign, the
Optik-É AN-30 aircraft laboratory was used as a research platform (Antokhin et al., 2012).
The measurement campaign consisted of two longitudinal and two latitudinal transects in the
troposphere from the ground level to a height of about 7 kilometers. The arctic longitudinal
transect extended from 66°37’23”E to 170°44’18”E, and the remote continental one
– from 129°46’47”E to 82°47’25”E. Along the Arctic coast, the sea was ice
covered.
Measurements showed that variation of CO2 mixing ratio within the lower troposphere
(below 3 km) over the Arctic region was small and ranged from 382 to 385 ppm, whereas
over the remote continental regions CO2 concentration values were lower and varied over a
wider range from 367 to 381 ppm (with minimum over forested areas). So, the conclusion can
be drawn that CO2 uptake by Siberian arctic ecosystems is weak. Maximal mixing ratios of
CO (-100 ppb) observed within the lower tropospheric layer over the Arctic were 1.4 times
lower than the free tropospheric ones. The vertical ozone distribution obtained during the
flights along the Arctic coast showed that ozone was mainly transported from the
stratosphere.
This work was funded by ANR as a part of POLARCAT France (grant BLAN06-1
137670), by the Norwegian Research Council as part of POLARCAT-Norway, CNRS
(France), the French Ministry of Foreign Affairs, CEA (France), Presidium of RAS (Program
No. 4), Brunch of Geology, Geophysics and Mining Sciences of RAS (Program No.
5), Interdisciplinary integration projects of Siberian Branch of RAS (No. 35, No.
70, No. 131), Russian Foundation for Basic Research (grants No 14-05-00526,
14-05-00590).
Antokhin P.N., Arshinov M.Yu., Belan B.D., Davydov D.K., Zhidovkin E.V., Ivlev G.A.,
Kozlov A.V., Kozlov V.S., Panchenko M.V., Penner I.E., Pestunov D.A., Simonenkov D.V.,
Tolmachev G.N., Fofonov A.V., Shamanaev V.S., Shmargunov V.P. 2012. Optik-É AN-30
aircraft laboratory: 20 years of environmental research. Journal of Atmospheric and Oceanic
Technology, V.29, No 1, 64-75. |
|
|
|
|
|
|