Results 61 to 70 of about 2,197 (157)

PeRL: a circum-Arctic Permafrost Region Pond and Lake database [PDF]

Earth System Science Data, 2017
Ponds and lakes are abundant in Arctic permafrost lowlands. They play an important role in Arctic wetland ecosystems by regulating carbon, water, and energy fluxes and providing freshwater habitats. However, ponds, i.e., waterbodies with surface areas
S. Muster, K. Roth, M. Langer, S. Lange, F. Cresto Aleina, A. Bartsch, A. Morgenstern, G. Grosse, B. Jones, A. B. K. Sannel, Y. Sjöberg, F. Günther, C. Andresen, A. Veremeeva, P. R. Lindgren, F. Bouchard, F. Bouchard, M. J. Lara, D. Fortier, S. Charbonneau, T. A. Virtanen, G. Hugelius, J. Palmtag, M. B. Siewert, W. J. Riley, C. D. Koven, J. Boike   +26 more
doaj   +1 more source

Climate and Permafrost Shifts in Yakutia’s Arctic and Subarctic from 1965 to 2023

Land
By analyzing the last 50–60 years of climate changes in Arctic and Subarctic Yakutia, we have identified three distinct periods of climate development.
Alexander N. Fedorov, Pavel Y. Konstantinov, Nikolay F. Vasilyev, Stepan P. Varlamov, Yuri B. Skachkov, Alexey N. Gorokhov, Svetlana V. Kalinicheva, Rosaliya N. Ivanova, Alexandra N. Petrova, Varvara V. Andreeva, Varvara A. Novopriezzhaya, Maxim A. Sivtsev, Mikhail N. Zheleznyak   +12 more
doaj   +1 more source

Geoinformation modeling of permafrost landscapes of North-Eastern Siberia

, 2022
The landscape-indicative approach makes it possible to determine permafrost landscapes based on the identification of two physiognomic indicators-variables of relief and vegetation, as well as stratigraphic-genetic sediment complexes. For permafrost characteristics of landscapes, multilevel combinations of environmental variables (criteria) for ...
Zakharov, Moisei, Gadal, Sébastien, Danilov, Yuri   +2 more
openaire   +2 more sources

Permafrost thaw induced drying of wetlands at Scotty Creek, NWT, Canada

Environmental Research Letters, 2018
Northwestern Canada is one of the most rapidly warming regions on Earth. The scale and rapidity of recently observed warming-induced changes throughout this region indicate that it is particularly sensitive to climate warming and capable of rapid ...
K M Haynes, R F Connon, W L Quinton
doaj   +1 more source

Scaling Arctic landscape and permafrost features improves active layer depth modeling

Environmental Research: Ecology
Tundra ecosystems in the Arctic store up to 40% of global below-ground organic carbon but are exposed to the fastest climate warming on Earth. However, accurately monitoring landscape changes in the Arctic is challenging due to the complex interactions ...
Wouter Hantson, Daryl Yang, Shawn P Serbin, Joshua B Fisher, Daniel J Hayes   +4 more
doaj   +1 more source

Observing Seasonal Variabilities of a Permafrost Landscape With PolSAR, InSAR and Pol-InSAR [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) remote sensing is an established approach for observing Earth processes. The combination of different types of SAR acquisitions in polarimetric, interferometric, and polarimetric-interferometric frameworks is well studied for retrieving parameters of certain landscape features, such as forests and glaciers.
Paloma Saporta, Alberto Alonso-González, Jennika Hammar, Inge Grünberg, Julia Boike, Irena Hajnsek   +5 more
openaire   +4 more sources

Remote sensing evaluation of High Arctic wetland depletion following permafrost disturbance by thermo-erosion gullying processes

Arctic Science, 2017
Northern wetlands and their productive tundra vegetation are of prime importance for Arctic wildlife by providing high-quality forage and breeding habitats. However, many wetlands are becoming drier as a function of climate-induced permafrost degradation.
Naïm Perreault, Esther Lévesque, Daniel Fortier, Denis Gratton, Laurent J. Lamarque   +4 more
doaj   +1 more source

MAPPING OF PERMAFROST LANDSCAPES BASED ON THE ANALYSIS OF TERMAL IMAGES [PDF]

Proceedings of the International conference “InterCarto/InterGIS”, 2016
This paper presents the method of remote detection and mapping of permafrost landscapes. These natural complexes visually are significant not only on the terrain, but easily distinguished by thermal characteristics on surface temperature maps, obtained by processing data from Landsat TM and Terra ASTER.
openaire   +2 more sources

Permafrost thaw and resulting soil moisture changes regulate projected high-latitude CO2 and CH4 emissions

Environmental Research Letters, 2015
The fate of currently frozen permafrost carbon as high-latitude climate warms remains highly uncertain and existing models give widely varying estimates of the permafrost carbon-climate feedback.
D M Lawrence, C D Koven, S C Swenson, W J Riley, A G Slater   +4 more
doaj   +1 more source

Influence of the permafrost boundary on dissolved organic matter characteristics in rivers within the Boreal and Taiga plains of western Canada

Environmental Research Letters, 2014
Catchment export of terrestrial dissolved organic matter (DOM) and its downstream degradation in aquatic ecosystems are important components of landscape scale carbon balances.
D Olefeldt, A Persson, M R Turetsky
doaj   +1 more source