Interannual Variability of Atmospheric CO2 Concentrations over Central Siberia from ZOTTO Data for 2009–2015

Тимохина, А. В.; Prokushkin, A. S.; Панов, А. В.; Kolosov, R.; Sidenko, Nikita; Lavrič, Jošt V.; Heimann, Martin

doi:10.3103/s1068373918050023

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…Yet, the seasonal cycle of NO X at the site is clearly discernible, with monthly medians of NO X peaking in the cold season from December to March (0.95 ppbv on average) and reaching a minimum in late summer and early autumn (0.30 ppbv on average for August to September). The observed accumulation of NO X in the cold season replicates the seasonal trends of other ozone precursor species (CO, CO 2 , and CH 4 ) at ZOTTO (Chi et al., 2013; Lloyd et al., 2002; Timokhina et al., 2018) having large continental sources, whose lower‐tropospheric abundance is controlled to large extent by the seasonally varying vertical mixing conditions and rates of photochemical destruction (in the case of CO and CH 4 ) in CBL and the free troposphere aloft.…”

Section: Resultssupporting

confidence: 65%

Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia

Moiseenko

Vasileva

Skorokhod

et al. 2021

Earth and Space Science

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Measurements of ozone (O 3 ) and its precursors, including NO X species (NO X = NO + NO 2 ), allow assessment of the current state of the tropospheric photochemical system (TPS), as well as long-term trends in chemical air composition associated with the changing climate and strength of air pollution sources. Ozone is a key compound of the TPS, whose photolysis initiates most of the chemical reactions through generating an excited atomic oxygen O( 1 D). A subsequent reaction of O( 1 D) with a molecule of water (H 2 O) is the principal source for the tropospheric hydroxyl radical OH which drives oxidation of relatively stable ozone precursor species [e.g., carbon monoxide (CO), methane (CH 4 ), and higher molecular mass hydrocarbons (NMHC)] emitted from various natural and anthropogenic sources. Also, O 3 is an important secondary pollutant whose mixing ratios above 40-60 ppbv are harmful to human health (

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Section: Resultssupporting

confidence: 65%

Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia

Moiseenko

Vasileva

Skorokhod

et al. 2021

Earth and Space Science

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“…As elsewhere [36,39,[45][46][47]65,66], the annual dynamic of atmospheric CO 2 and CH 4 shows a seasonal pattern (Figure 5a,b), that is, given a coastal high-arctic location of the site, expected to be primarily related to local environments and proximity to the Arctic Ocean (AO). The detailed overview of the seasonality for CO 2 and CH 4 in the study area was reported earlier [40], while herein we give a longer-term record, focusing more on links of the observed trace gas fluctuations with the footprint of the measurement site and clarifying the contribution of the AO to the atmospheric signals.…”

Section: Temporal Fluctuations Of Carbon Dioxide and Methane In The C...mentioning

confidence: 62%

Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea

et al. 2022

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Observations of the atmospheric sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are extremely scarce, limiting our knowledge of carbon turnover in this climatically sensitive environment and the fate of the enormous carbon reservoirs conserved in the permafrost. Especially critical are the gaps in the high latitudes of Siberia, covered by the vast permafrost underlain tundra, where only several atmospheric monitoring sites are operational. This paper presents the first two years (September 2018–January 2021) of accurate continuous observations of atmospheric CO2 and CH4 dry mole fractions at the recently deployed tower-based measurement station “DIAMIS” (73.5068° N, 80.5198° E) located on the southwestern coast of the Taimyr Peninsula, Siberia, at the Gulf of the Yenisei River that opens to the Kara Sea (Arctic Ocean). In this paper, we summarized the scientific rationale of the site, examined the seasonal footprint of the station with an analysis of terrestrial vegetation and maritime sector contributing to the captured atmospheric signal, and illustrated temporal patterns of CO2 and CH4 for the daytime mixed atmospheric layer over the continent–sea interface. Along with the temporal variations reflecting a signal caused pan-Arctic and not very much influenced by the local processes, we analyzed the spatiotemporal distribution of the synoptic anomalies representing the atmospheric signatures of regional sources and sinks of CO2 and CH4 for the studied high-arctic Siberian domain of ~625 thousand km2, with nearly equal capturing the land surface (54%) and the ocean (46%) throughout the year. Both for CO2 and CH4, we have observed a sea–continent declining trend, presuming a larger depletion of trace gases in the maritime air masses compared to the continental domain. So far, over the Kara Sea, we have not detected any prominent signals of CH4 that might have indicated processes of subsea permafrost degradation and occurrence of cold seeps–still mainly observed in the eastern Arctic Seas—The Laptev Sea and the East-Siberian Sea.

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“…At ZOTTO, the CO 2 seasonal cycle amplitude in the period from 2007-2015 was reported to be mostly between 25 and 30 ppm (Kozlova et al, 2008;Winderlich et al, 2010;Timokhina et al, 2018), which is higher than for many other continental sites at which the marine atmospheric influence is more pronounced (Winderlich et al, 2010). The annual CO 2 growth rate is highly variable for the same period, with a mean value of 2.34 ppm/year (Timokhina et al, 2018). CH 4 has an almost flat baseline, on which concentration spikes occur throughout the year.…”

Section: Concentrations Of the Trace Gases Co 2 Ch 4 And Comentioning

confidence: 99%

Tropical and Boreal Forest – Atmosphere Interactions: A Review

Artaxo

Hansson

Andreae

et al. 2022

Tellus B: Chemical and Physical Meteorology

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Interannual Variability of Atmospheric CO2 Concentrations over Central Siberia from ZOTTO Data for 2009–2015

Cited by 10 publications

References 12 publications

Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia

Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia

Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea

Tropical and Boreal Forest – Atmosphere Interactions: A Review

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Interannual Variability of Atmospheric CO2 Concentrations over Central Siberia from ZOTTO Data for 2009–2015

Cited by 10 publications

References 12 publications

Regional Impact of Ozone Precursor Emissions on NOX and O3 Levels at ZOTTO Tall Tower in Central Siberia

Regional Impact of Ozone Precursor Emissions on NOX and O3 Levels at ZOTTO Tall Tower in Central Siberia

Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea

Tropical and Boreal Forest – Atmosphere Interactions: A Review

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Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia

Regional Impact of Ozone Precursor Emissions on NO_X and O₃ Levels at ZOTTO Tall Tower in Central Siberia