Results 61 to 70 of about 4,057 (184)

Thaw processes in ice-rich permafrost landscapes represented with laterally coupled tiles in a land surface model [PDF]

The Cryosphere, 2019
Earth system models (ESMs) are our primary tool for projecting future climate change, but their ability to represent small-scale land surface processes is currently limited.
K. S. Aas, L. Martin, J. Nitzbon, J. Nitzbon, J. Nitzbon, M. Langer, M. Langer, J. Boike, J. Boike, H. Lee, T. K. Berntsen, S. Westermann   +11 more
doaj   +1 more source

Prevalence of Local Emissions in Arctic Carbonaceous Aerosols Revealed by Dual Carbon Isotopes and Atmospheric Transport Modeling

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Carbonaceous aerosols in the Arctic are mainly attributed to long‐range transport from lower latitudes, but direct observational data over the central Arctic Ocean, particularly in summer, remain limited. We present a cruise‐based study conducted during the eighth Xuelong Arctic expedition across the central Arctic Ocean.
Md. Mozammel Haque, Mingyuan Yu, Wenhuai Song, Sönke Szidat, Yanlin Zhang   +4 more
wiley   +1 more source

Important but Overlooked Reactive Organic Carbon (ROC) Air Pollution From Permafrost Wildfires in Canada

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Canadian permafrost wildfires, characterized by surface flaming and deep organic soil smoldering, emit complex suites of volatile organic compounds (VOCs). These emissions include air toxics that pose substantial public health risks and fuel secondary pollution, yet remain understudied.
Xueying Liu, Zejiang Yu, Yifang Ban, Hemraj Bhattarai, Theodore K. Koenig, Lingcao Huang, Enze Zhang, Claire Granier, Guy Brasseur, Zhe Wang, Jimmy C. H. Fung   +10 more
wiley   +1 more source

Lake changes and their driving factors in circum-arctic permafrost regions from 1990 to 2022

Ecological Indicators
The rapid increase in temperatures and escalating human activities have led to a reduction or even disappearance of the thickness of the permafrost layer around the Arctic.
Wangping Li, Kaixuan Zhang, Xiaodong Wu, Xiaoqiang Cheng, Xiaoxian Wang, Zhaoye Zhou, Junming Hao, Xiuxia Zhang   +7 more
doaj   +1 more source

Topographic and Climatic Determinants of Soil Organic Carbon Across Landscapes: A Meta‐Analysis

Land Degradation &Development, Volume 37, Issue 17, Page 12023-12040, November 2026.
ABSTRACT The soil is the greatest natural store of organic carbon, holding between 1500 to 1550 Pg C of organic carbon at the top 100 cm of the soil globally—roughly twice the carbon pool in the atmosphere. The spatial distribution of this stock is controlled by a complex chain of controls: topographic position regulates the hydrological redistribution,
Vishal Sharma, Syed Hujjat ul Baligah, Tajamul Islam Shah, Shahid Shuja Shafai, Owais Bashir, Syed Sheraz Madhi, S. Naresh Kumar, Ayyandar Arunachalam, Shabir Ahmed Bangroo   +8 more
wiley   +1 more source

Terrestrial inputs and in‐lake processes shape dissolved organic matter along a permafrost gradient

Limnology and Oceanography, Volume 71, Issue 11, November 2026.
Abstract Northern permafrost landscapes store large amounts of organic carbon that can enter lakes as dissolved organic matter (DOM), but links among shoreline terrestrial sources, lake‐water DOM composition, and catchment configuration remain uncertain in low‐precipitation Shield landscapes. We combined shoreline soil‐porewater and lake‐water sampling
Ryan H. S. Hutchins, Jeremy G. Leathers, Sherry L. Schiff, Michael C. English, Mackenzie Schultz, Jason J. Venkiteswaran, Suzanne E. Tank, Richard J. Elgood, Pieter J. K. Aukes   +8 more
wiley   +1 more source

Contrasting Responses of Carbon Dioxide and Methane Fluxes Following Thermokarst Erosion Across Tundra‐Lake Interfaces in the Western Canadian Arctic

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 11, November 2026.
Abstract Erosion from ice‐rich permafrost thaw (“thermokarst”) alters tundra vegetation cover and soil moisture, and laterally transports organic material into lakes, altering net fluxes of carbon dioxide (FCO2), methane (FCH4), and nitrous oxide (FN2O).
Kathryn A. Bennett, Carolina Voigt, Léa Cornette, Jasmin Drouin‐Jacques, Camellia Gray, Roxane Maranger, Benjamin Schmidt, Suzanne E. Tank, Andy Vicente‐Luis, Christian von Sperber, Oliver Sonnentag   +10 more
wiley   +1 more source

Permafrost degradation of peatlands in northern Sweden

, 2023
Abstract. Climate heating is degrading palsa peatlands across the circumpolar permafrost region. Permafrost degradation may lead to ecosystem collapse and potentially strong climate feedbacks, as this ecosystem is an important carbon store and can transition to being a strong methane emitter.
Samuel Valman, Matthias Siewert, Doreen Boyd, Martha Ledger, David Gee, Betsabe de la Barreda-Bautista, Andrew Sowter, Sofie Sjogersten   +7 more
openaire   +2 more sources

Increased Hydrological Connectivity Does Not Always Lead to Increased Nutrient Removal Potential in a Coastal River Delta

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 11, November 2026.
Abstract Coastal river deltas can act as important nitrate sinks, reducing nutrient loads that contribute to coastal hypoxia. Their removal capacity depends not only on local biogeochemical conditions but also on the transport pathways of nutrients through the delta.
Eleanor Henson, Paola Passalacqua
wiley   +1 more source

Advancing Satellite Solar‐Induced Chlorophyll Fluorescence Data Assimilation in Land Surface Models: An Assessment Over Boreal Evergreen Needleleaf Forests

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 11, November 2026.
Abstract Boreal forests represent about 20% of the global forest carbon sink and contribute to climate change mitigation, yet land surface models (LSMs) struggle to simulate their gross primary production (GPP). Space‐borne observations of solar‐induced fluorescence (SIF) have been used to improve LSM GPP through data assimilation.
L. Leverne, C. Abadie, C. Bacour, V. Tartaglione, Y. Zhang, T. A. Black, V. Bastrikov, N. Raoult, P. Peylin, A. Krieger‐Liszkay, F. Maignan   +10 more
wiley   +1 more source