Continuous CO2 and CH4 Observations in the Coastal Arctic Atmosphere of the Western Taimyr Peninsula, Siberia: The First Results from a New Measurement Station in Dikson

Abstract

Atmospheric observations of sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are highly sporadic, limiting our understanding of carbon turnover in this climatically sensitive environment and the fate of enormous carbon reservoirs buried in permafrost. Particular gaps apply to the Arctic latitudes of Siberia, covered by the vast tundra ecosystems underlain by permafrost, where only few atmospheric sites are available. The paper presents the first results of continuous observations of atmospheric CO2 and CH4 dry mole fractions at a newly operated station “DIAMIS” (73.30° N, 80.31° E) deployed on the edge of the Dikson settlement on the western coast of the Taimyr Peninsula. Atmospheric mole fractions of CO2, CH4, and H2O are measured by a CRDS analyzer Picarro G2301-f, which is regularly calibrated against WMO-traceable gases. Meteorological records permit screening of trace gas series. Here, we give the scientific rationale of the site, describe the instrumental setup, analyze the local environments, examine the seasonal footprint, and show CO2 and CH4 fluctuations for the daytime mixed atmospheric layer that is representative over a vast Arctic domain (~500–1000 km), capturing both terrestrial and oceanic signals.

Variation in Soil CO2 Fluxes across Land Cover Mosaic in Typical Tundra of the Taimyr Peninsula, Siberia

“…Summer in the area is short, with an average air temperature of +3.8 °C, while winter is windy, with frequent intense blizzards, but relatively mild, with an average air temperature of −24.2 °C. The further meteoclimatic details of the area have been previously presented elsewhere [36,37]. According to the Circumpolar Arctic Vegetation Map [40], the study area can be classified as the southern part of the Arctic tundra, almost bordering the northern hypoarctic tundra.…”

“…To achieve our goals, we performed chamber measurements of CO 2 fluxes in situ and under manipulations, coupled with records of meteoclimatic variables in diverse landscapes and vegetation across typical tundra in the southwestern coast of the Taimyr Peninsula (Siberia) during the growing seasons in 2021-2022. The reported study is part of the longterm research program linked to accurate continuous atmospheric observations of carbon dioxide and methane in the area, which have been operational since 2018 at the "DIAMIS" (Dikson Atmospheric Measurement Integration Station) station [36,37].…”

Assessing Distributed Solar Power Generation Potential under Multi-GCMs: A Factorial-Analysis-Based Random Forest Method

“…Climate change has significant adverse impacts on food production reduction, ecological degradation, and environmental pollution, threatening human survival condition and socioeconomic sustainable development. , Carbon dioxide (CO 2 ) emission from fossil fuel consumption is widely acknowledged as a major contributor to climate change. , According to statistics from the International Energy Agency, CO 2 emission from fossil fuel-related activities reached 33 gigatons (Gt) in 2019, accounting for 97% of the total emission. , The report of the Fifth Intergovernmental Panel on Climate Change (IPCC) indicates that the prediction of significant changes in future climate will induce massive national energy investment and stimulate the innovation of energy structure . Renewable energy (e.g., solar energy) has great potential for development and can eventually replace most conventional fossil fuels. , It is essential to predict solar energy potential for robust planning, management, and application of regional solar investments. , …”

“…3,4 According to statistics from the International Energy Agency, CO 2 emission from fossil fuel-related activities reached 33 gigatons (Gt) in 2019, accounting for 97% of the total emission. 5,6 The report of the Fifth Intergovernmental Panel on Climate Change (IPCC) indicates that the prediction of significant changes in future climate will induce massive national energy investment and stimulate the innovation of energy structure. 7 Renewable energy (e.g., solar energy) has great potential for development and can eventually replace most conventional fossil fuels.…”

The Spatial Distribution Characteristics of Carbon Emissions at County Level in the Harbin–Changchun Urban Agglomeration

“…Since the industrial revolution, the extensive use of fossil fuels by human society has emitted a large amount of carbon dioxide which has posed a serious threat to the ecological environment [1][2][3]. According to statistics from the International Energy Agency, global energy-related carbon dioxide emissions reached 33 gigatonnes (Gt) in 2019, which has greatly affected the global environment [4].…”