Natsagdorj Sharkhuu

This study presents the results of permafrost mapping in Mongolia based on the TTOP (temperature-on-top-of-permafrost) approach, which were validated against in situ measurements at various locations. In situ measurements indicated that the mean annual ground temperature (MAGT) ranged from 0.6 to 2.2°C interannually, showing the greatest variabilit...

The first record of stable isotopes through a complete sequence of ice within an open‐system pingo in northwestern Mongolia indicates a complex history of ice formation and pingo growth. A continuous section of ice 32 m long was cored through the centre of Mongot Pingo, and ice cores were analysed for stable isotopes and chemical composition. Two d...

Long-term monitoring of permafrost in Mongolia showed that permafrost under the influence of climate warming is ubiquitously degrading at different rates. The average trends of the increases in active layer thickness and mean annual ground temperature are 5–20 cm and 0.1–0.3°C per decade, respectively. These trends of the last 15–20 years are highe...

The first complete record of stable isotopes (δ 18 O, δD) in ice within both open-and closed-system pingos indicates a complex history of ice formation and pingo growth. A continuous section of ice was cored through the center of the Mongot Pingo in northwestern Mongolia and through the Weather Pingo in northern Alaska. Ice from each core and the w...

Permafrost in Central Asian is present in the Qinghai–Tibet Plateau in China, the Tien Shan Mountain regions in China, Kazakhstan and Kyrgyzstan, the Pamirs in Tajikistan, and in Mongolia. Monitoring of the ground thermal regime in these regions over the past several decades has shown that the permafrost has been undergoing significant changes caus...

Recent progress in research about permafrost changes induced by climatic warming in Central Asia is summarized in this paper. Most permafrost in Central Asia is located on the Qinghai-Tibet Plateau in China, the Tien Shan Mountain regions in China, Kazakhstan, and Kyrgyzstan, Pamir and mountain regions in Tajikistan and Mongolia. Monitoring of the...

The Hovsgol mountain region (49°–52°N, 98°–102°E) of northern Mongolia contains widespread mountain permafrost and comprises the southern fringe of the Siberian continuous permafrost zone. In this paper, we report our initial monitoring of permafrost by means of measuring ground temperatures and active layer thickness in boreholes and some cryogeni...

Near-surface temperature variations in different topographic settings were obtained from miniature temperature data-loggers at 17 locations over a 2-year period in the Lake Hövsgöl area in northern Mongolia. These measurements were used to analyse the influence of vegetation, solar radiation, surface wetness and snow cover on the ground thermal reg...

Lake Hövsgöl is located on the southern fringe of the continuous permafrost zone in northern Mongolia. This paper describes a GIS-based empirical permafrost model that is calibrated with ground temperature observations, and utilises a multi-criteria approach to derive zones of permafrost favourability based on terrain parameters and land cover info...

The Hovsgol Mountain Region is located between the coordinates of N 49°-52° and E 98°-102 ° in territory of Hovsgol Province, Mongolia. The territory is characterized by mountain permafrost, sporadic to continuous in its distribution, and occupies the southern fringe of the Siberian continuous permafrost zone. The main goal of permafrost monitoring...

Northern Mongolia represents the southern-most extension of continuous permafrost and the border of the Siberian taiga forest in Asia. The mountainous watershed valleys of Lake Hövsgöl are in a forest/steppe transition zone characterized by continuous permafrost in the upper valleys and ridge tops and discontinuous permafrost in lower valley areas....

The spatial distribution of ground temperature and soil moisture was observed in the region of the southern boundary of discontinuous permafrost in northeastern Mongolia. Permafrost was found beneath north-facing forested slopes and flat pasture plains. Permafrost beneath north-facing slopes is overlain by a wet active layer, while that beneath pas...

The region of Lake Hövsgöl, northern Mongolia, lies at the southern edge of Siberia and forms the southern-most fringe of the Siberian continuous permafrost zone. Analysis of long-term temperature data from the area indicates that annual temperatures have warmed by about 1.5^oC over the last 40 years. Being at the southern fringe of permafrost exis...

This paper describes frost heaving in the Selenge River Basin in central Mongolia. Spatial information has been compiled according to predominant composition of the ground, soil moisture content and water level, permafrost distribution and temperature, and the depth of seasonal freezing/thawing of the ground. This allows the creation of a permafros...

Mongolia situated in the southern boundary of Eurasian permafrost region in which permafrost distribution is mosaic-lake, being strongly affected not only by landscape conditions but also by global climate The occurrence of mountain permafrost depends on many parameters, which have direct and indirect relationships between each other, such as solar...

We evaluated symbiotic system of forest and permafrost using land-surface hydro-meteorological datasets obtained at northern Mongolia, southern boundary of Eurasian permafrost. Analysis indicated that greatly reduced radiation by forest shading is fundamental agent for permafrost preservation underneath northern forested slopes. Furthermore, organi...