A5036549934- Climate change and permafrost
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Geological Studies and Exploration
- Geology and Paleoclimatology Research
- Rangeland Management and Livestock Ecology
- Water Resources and Management
- Soil Moisture and Remote Sensing
- Smart Materials for Construction
- Geological Formations and Processes Exploration
- Methane Hydrates and Related Phenomena
- Soil and Unsaturated Flow
- Tree-ring climate responses
- Paleontology and Stratigraphy of Fossils
- Geophysical Methods and Applications
- Geological formations and processes
- Plant Water Relations and Carbon Dynamics
- Atmospheric and Environmental Gas Dynamics
- Geophysical and Geoelectrical Methods
Mongolian Academy of Sciences
2013-2024
V. B. Sochava Institute of Geography
2012-2018
Permafrost is a key element of the cryosphere and an essential climate variable in Global Climate Observing System. There no remote-sensing method available to reliably monitor permafrost thermal state. To estimate distribution at hemispheric scale, we employ equilibrium state model for temperature top (TTOP model) 2000–2016 period, driven by remotely-sensed land surface temperatures, down-scaled ERA-Interim reanalysis data, tundra wetness classes landcover map from ESA Landcover Change...
Permafrost plays an important role in numerous environmental processes at high latitudes and mountain areas. The identification of permafrost, particularly the discontinuous permafrost regions, is challenging due to limited data availability spatial variability controlling factors. This study focuses on a data-scarce environment northern Mongolia, interface between boreal forest dry steppe mid-latitudes. In this region, ground temperature has been increasing continuously since 2011...
Abstract This study presents the results of permafrost mapping in Mongolia based on TTOP (temperature‐on‐top‐of‐permafrost) approach, which were validated against situ measurements at various locations. In indicated that mean annual ground temperature (MAGT) ranged from 0.6 to 2.2°C interannually, showing greatest variability when furthest 0°C. The differences between modeled and measured MAGTs exceeded ±1°C locations where was a nonequilibrium state controlled predominantly by local...
We synthesized recent field-based estimates of the dissolved ions (K + Na Ca 2+ Mg Cl - SO 4 2- HCO 3 ), biogens (NO , NO 2 PO 3- )(C, mg/l), heavy metal (Fe sum Mn, Pb) and load (DL, kg/day), as far suspended sediment concentration (SSC, mg/l) (SL, kg/day) along upper Selenga river its tributaries based on literature review preliminary results our 2011 field campaign. The crucial task this paper is to provide full Russian, Mongolian English-language which concern matter fluxes in part...
This study presents thermokarst lake changes at seven different sites in the continuous and isolated permafrost zones Mongolia. Lakes larger than 0.1 ha were analyzed using Corona KH-4, KH-4A KH-4B (1962-1968), Landsat ETM + (1999-2001), ALOS/AVNIR-2 (2006-2007) satellite imagery. Between 1962 2007, total number area of lakes increased by +21% (347 to 420), +7% (3680 3936 ha) zone, respectively. These correspond appearance 85 new (166 during last 45 years. In contrast, zone have decreased...
Abstract Numerous frost mounds exist on the meander belt and alluvial fan around Arsain Gol River in Darhad basin, northern Mongolia, at southern fringe of north‐eastern Eurasian permafrost zone. In this environment, abundant water supply inter‐permafrost taliks may allow development artesian pressure that leads to groundwater upwelling. The aim study was determine formation chronology pingos region. pingo drilled a depth 35 m stratigraphy, data were collected ground‐ice stable isotopic...
High topographic heterogeneity and complex mechanisms between the atmosphere ground create unique hydro-climatic processes over mountainous regions. Based on in situ observations, we present spatial variability of surface temperature (GST) Khentii Mountains northern Mongolia, which is situated at southern fringe Eurasian permafrost zone. Changes hydrothermal regime active layer were investigated association with changing climate wildfire effects. The results reveal that GST tends to increase...
ABSTRACT The distribution of permafrost in the southernmost zones is complicated both time and space. We assessed this complexity by applying transient heat transfer schemes to model Mongolia between 1986 2016. modeling took into account spatial soil thermal properties series ground temperature profiles observed at 69 borehole sites. Spatial was forced downscaled ERA5 air temperatures that were further debiased with local meteorological records. results indicated warmed 0°C 0.4°C/decade,...
Wetlands are critical ecosystems for supporting biodiversity and regulating climate. Over the past century, it has been degraded significantly due to both climatic human activities. In Mongolia, livestock grazing drastic impact on this ecosystem. study, we seek understand effects of soil water content (SWC) moisture by contrasting grazed non-grazed area in a wetland north-eastern Mongolia. We found that infiltration was five times lower than area. Soil higher stable near surface (5 cm depth)...
In recent years, despite the intensive expansion of our country's asphalt road network, building roads in permafrost areas without scientific study have become main reason for an increase formation damaged, subsided, and low-aged roads. Therefore, we conducted a investigation selected 25.8 km sections, which included K13+600:K13+800, K14+360:K14+500, K15+160:K15+300, covered from Tsagaanuur village Nogoonnuur soum Bayan-Ulgii province to Ulaanbaishint border crossing with Russia, are region...