A5066269383- Climate change and permafrost
- Cryospheric studies and observations
- Arctic and Russian Policy Studies
- Arctic and Antarctic ice dynamics
- Geological Studies and Exploration
- Indigenous Studies and Ecology
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Atmospheric and Environmental Gas Dynamics
- Smart Materials for Construction
- Landslides and related hazards
- Climate variability and models
- Tree-ring climate responses
- Regional Socio-Economic Development Trends
- Engineering and Environmental Studies
- Water Resources and Management
- Polar Research and Ecology
- Atmospheric chemistry and aerosols
- Advanced Power Generation Technologies
- Hydrocarbon exploration and reservoir analysis
- Precipitation Measurement and Analysis
- Environmental Impact and Sustainability
- Rock Mechanics and Modeling
- Landscape and Cultural Studies
- Spatial and Panel Data Analysis
George Washington University
2016-2025
Earth Cryosphere Institute
2012-2021
Sphere Institute
2021
State Hydrological Institute
2015-2017
University of Delaware
2010
Permafrost warming has the potential to amplify global climate change, because when frozen sediments thaw it unlocks soil organic carbon. Yet date, no globally consistent assessment of permafrost temperature change been compiled. Here we use a data set time series from Global Terrestrial Network for evaluate across regions period since International Polar Year (2007-2009). During reference decade between 2007 and 2016, ground near depth zero annual amplitude in continuous zone increased by...
Russian regions containing permafrost play an important role in the economy, vast reserves of natural resources and hosting large-scale infrastructure to facilitate these resources' exploitation. Rapidly changing climatic conditions are a major concern for future economic development regions. This study examines extent which housing affected by Russia estimates associated value assets. An ensemble climate projections is used as forcing permafrost-geotechnical model, order estimate cost...
A continuous time series of annual soil thaw records, extending from 1994 to 2009, is available for comparison with the records obtained Biocomplexity Experiment (BE) period 2006–2009. Discontinuous at Barrow wet tundra sites date back 1960s. Comparisons between longer BE observations reveal strong similarities. Records permafrost temperature, reflecting changes in surface energy exchange, are 1950s results measurement programs begun 2002. The long‐term systematic geocryological...
Abstract. The Global Terrestrial Network for Permafrost (GTN-P) provides the first dynamic database associated with Thermal State of (TSP) and Circumpolar Active Layer Monitoring (CALM) programs, which extensively collect permafrost temperature active layer thickness (ALT) data from Arctic, Antarctic mountain regions. purpose GTN-P is to establish an early warning system consequences climate change in regions provide standardized thermal global models. In this paper we introduce perform...
Role of changing climatic conditions on permafrost degradation and hydrology was investigated in the transition zone between tundra forest ecotones at boundary continuous discontinuous lower Yenisei River. Three watersheds various sizes were chosen to represent characteristics regional landscape conditions. Samples river flow, precipitation, snow cover, ground ice collected over determine isotopic composition potential sources water a flow two year period. Increases air temperature last...
Increases in air temperature have occurred most parts of the Arctic recent decades. Corresponding changes permafrost and active layer resulted decreases ground-bearing capacity, which may not been anticipated at time construction regions. Permafrost model was coupled with empirically derived solutions adopted from Soviet Russian standards regulations to estimate bearing capacity foundations under rapidly changing climatic conditions, a variety geographic geologic settings. Changes over last...
One of the most significant climate change impacts on arctic urban landscapes is warming and degradation permafrost, which negatively affects structural integrity infrastructure. We estimate potential changes in stability Russian infrastructure built permafrost response to projected climatic provided by six preselected General Circulation Models (GCMs) participated recent Climate Model Inter‐comparison Project (CMIP5). The analysis was conducted for entire extent permafrost‐affected area....
The Arctic is experiencing pronounced climatic and environmental changes. These changes pose a risk to infrastructure, impacting the accessibility development of remote locations adding additional pressures on local regional budgets. This study estimates costs fixed infrastructure affected by climate change impacts in region, specifically permafrost thaw. Geotechnical models are forced data from six CMIP5 used evaluate geotechnical characteristics between decades 2050–2059 2006–2015 under...
Abstract The Global Climate Observing System and Terrestrial Network have identified permafrost as an ‘Essential Variable,’ for which ground temperature active layer dynamics are key variables. This work presents long-term climate, monitoring data at seven sites representative of diverse climatic environmental conditions in the western Russian Arctic. region interest is experiencing some highest rates degradation globally. Since 1970, mean annual air temperatures precipitation increased from...
Abstract In some regions underlain by ice‐rich permafrost, a consistent, long‐term increase in ALT under changing climatic conditions is not supported observations. The apparent lack of may be attributed to soil consolidation from thawing the uppermost permafrost and subsidence ground surface. Four plots established 1962 at Barrow, Alaska, were re‐instrumented 2003 surveyed annually using differential GPS technology, accompanied active‐layer probing. Elevation change was within interannual...
Abstract Climate change has adverse impacts on Arctic natural ecosystems and threatens northern communities by disrupting subsistence practices, limiting accessibility, putting built infrastructure at risk. In this paper, we analyze spatial patterns of permafrost degradation associated risks to due loss bearing capacity thaw subsidence in regions the Arctic. Using a subset three Coupled Model Intercomparison Project 6 models under SSP245 585 scenarios estimated changes ground between two...
Abstract Observations in undisturbed terrain within some regions of the Arctic reveal limited correlation between increasing air temperature and thickness seasonally thawed layer above ice‐rich permafrost. Here we describe landscape‐scale, thaw‐induced subsidence lacking topographic contrasts associated with thermokarst terrain. A high‐resolution, 11 year record vertical movement at ground surface from contrasting physiographic northern Alaska, obtained differential global positioning...
Spatial variability and temporal trends of the shallow ground thermal regime permafrost active-layer thickness (ALT) were estimated over 1963–2013 using daily soil temperature data available from stations Russian Hydrometeorological Service. Correlation analysis was used to evaluate role changing climatic conditions on regime. ALT collected by Circumpolar Active Layer Monitoring program in Russia expand geography observations 1999–2013, identify 'hot spots' change. Results indicate that a...
Climate warming is occurring at an unprecedented rate in the Arctic due to regional amplification, potentially accelerating land cover change. Measuring and monitoring change utilizing optical remote sensing has been challenging persistent cloud snow issues spectrally similar types. Google Earth Engine (GEE) represents a powerful tool efficiently investigate these changes using large repository of available imagery. This work examines Lower Yenisei River region arctic central Siberia...
Abstract High-latitude and altitude cold regions are affected by climate warming permafrost degradation. One of the major concerns associated with degrading is thaw subsidence due to melting excess ground ice consolidation. Field observations, remote sensing, numerical modeling used measure estimate extent rates across broad spatial temporal scales. Our new data synthesis effort from diverse North America Eurasia, confirms widespread panarctic domain up 2 cm/yr in areas low content more than...
The city of Norilsk represents an unprecedented case massive construction in the permafrost regions Arctic. Norilsk's urban expansion can be attributed to development engineering practices that maintained thermal stability permafrost. However, complex interactions between landscape and have resulted warming degradation. Negative cryogenic processes started manifest themselves 10–15 years after initial intensified with time. Problems were further exacerbated by poor quality construction,...
The Circumpolar Active Layer Monitoring (CALM) network is an ongoing international effort to collect and disseminate standardized measurements of active-layer dynamics monitor the response near-surface permafrost parameters climate change. This work presents a distillation 25 years (1995–2019) observations from three north–south transects CALM sites in tundra environments Alaska. Transects examined this bisect regions discontinuous on Seward Peninsula, continuous zone western eastern...