Articles | Volume 15, issue 4
https://doi.org/10.5194/tc-15-1907-2021
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the Creative Commons Attribution 4.0 License.
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https://doi.org/10.5194/tc-15-1907-2021
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Research article
| 
20 Apr 2021
Research article |
| 20 Apr 2021
| 20 Apr 2021
Mapping potential signs of gas emissions in ice of Lake Neyto, Yamal, Russia, using synthetic aperture radar and multispectral remote sensing data
b.geos, Korneuburg, Austria
Austrian Polar Research Institute, Vienna, Austria
Department of Geoinformatics – Z_GIS, DK GIScience, Paris Lodron University of Salzburg, Salzburg, Austria
Annett Bartsch
b.geos, Korneuburg, Austria
Austrian Polar Research Institute, Vienna, Austria
Department of Geoinformatics – Z_GIS, DK GIScience, Paris Lodron University of Salzburg, Salzburg, Austria
Yury A. Dvornikov
Department of Landscape Design and Sustainable Ecosystems, Agrarian-Technological Institute, Peoples’ Friendship University of Russia, Moscow, Russia
Alexei V. Kouraev
LEGOS, Université de Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France
Department of Geology and Geography, Tomsk State University, Tomsk, Russia
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Elena Shevnina, Ekaterina Kourzeneva, Yury Dvornikov, and Irina Fedorova
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Antarctica consists mostly of frozen water, and it makes the continent sensitive to warming due to enhancing a transition/exchange of water from solid (ice and snow) to liquid (lakes and rivers) form. Therefore, it is important to know how fast water is exchanged in the Antarctic lakes. The study gives first estimates of scales for water exchange for five lakes located in the Larsemann Hills oasis. Two methods are suggested to evaluate the timescale for the lakes depending on their type.
Zhen Zhang, Etienne Fluet-Chouinard, Katherine Jensen, Kyle McDonald, Gustaf Hugelius, Thomas Gumbricht, Mark Carroll, Catherine Prigent, Annett Bartsch, and Benjamin Poulter
Earth Syst. Sci. Data, 13, 2001–2023, https://doi.org/10.5194/essd-13-2001-2021, https://doi.org/10.5194/essd-13-2001-2021, 2021
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The spatiotemporal distribution of wetlands is one of the important and yet uncertain factors determining the time and locations of methane fluxes. The Wetland Area and Dynamics for Methane Modeling (WAD2M) dataset describes the global data product used to quantify the areal dynamics of natural wetlands and how global wetlands are changing in response to climate.
Alexander Savvichev, Igor Rusanov, Yury Dvornikov, Vitaly Kadnikov, Anna Kallistova, Elena Veslopolova, Antonina Chetverova, Marina Leibman, Pavel A. Sigalevich, Nikolay Pimenov, Nikolai Ravin, and Artem Khomutov
Biogeosciences, 18, 2791–2807, https://doi.org/10.5194/bg-18-2791-2021, https://doi.org/10.5194/bg-18-2791-2021, 2021
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Microbial processes of the methane cycle were studied in four lakes of the central part of the Yamal Peninsula in an area of continuous permafrost: two large, deep lakes and two small and shallow ones. It was found that only small, shallow lakes contributed significantly to the overall diffusive methane emissions from the water surface during the warm summer season. The water column of large, deep lakes on Yamal acted as a microbial filter preventing methane emissions into the atmosphere.
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Short summary
This study presents strong new indications that regions of anomalously low backscatter in C-band synthetic aperture radar (SAR) imagery of ice of Lake Neyto in northwestern Siberia are related to strong emissions of natural gas. Spatio-temporal dynamics and potential scattering and formation mechanisms are assessed. It is suggested that exploiting the spatial and temporal properties of Sentinel-1 SAR data may be beneficial for the identification of similar phenomena in other Arctic lakes.
This study presents strong new indications that regions of anomalously low backscatter in C-band...
