Mongolian Academy of Sciences

Spatiotemporal Characteristics and Drivers of and Vegetation Responses to Flash Droughts over the Mongolian Plateau

In this study, based on daily soil moisture, air temperature, and radiation data from the ERA5-Land reanalysis dataset spanning 1980–2021, flash-drought events on the Mongolian Plateau were identified. This research reveals the spatiotemporal characteristics and driving factors o...

Comparative physicochemical characterization and water quality assessment of drinking water from wells in Songino-Khairkhan District, Ulaanbaatar, Mongolia

ABSTRACT Groundwater is an important drinking-water source in peri-urban areas where centralized water supply systems are limited. This study evaluated the hydrochemical characteristics and trace-element composition of groundwater in Khoroos 32 and 33 of Songino-Khairkhan Distric...

Late Triassic adakitic rocks in the Selenge igneous rock complex, northern Mongolia: petrogenesis and tectonic implications

In northern Mongolia, in the region along the southern margin of the former Siberian continent, Permian–Triassic adakitic rock complexes formed by the melting of the oceanic slab are widely exposed (Selenge Igneous Rock Complex: SIC). However, the petrogenesis of the SIC remain i...

Dirt road density increased markedly since the 1970s in the Daurian grasslands

Informal dirt roads are widespread and can increase human access and habitat fragmentation in remote landscapes. However, they are rarely mapped, leaving their ecological effects poorly quantified. We assessed changes in dirt road networks across the Daurian Steppe of Mongolia, R...

Short-term power forecasting model for distributed wind-PV grid connection based on MIC feature screening and improved FTO optimized XGBoost

Abstract Aiming at the strong randomness, fluctuation, redundant feature interference, low fitting accuracy, and easy local optimum of hyperparameter optimization in traditional distributed wind–photovoltaic grid-connected power forecasting models, a novel hybrid short-term power...

Long-Term Dynamics of Aufeis and Their Association with Vegetation Phenology: A Case Study in the Chuluut River Valley, Mongolia

Multi-temporal satellite data were used to examine changes in aufeis area and spatial configuration in the Chuluut River valley, Mongolia, and to compare seasonal vegetation dynamics among sites with different return frequencies of aufeis. Annual aufeis masks were derived from La...

Urban Expansion and Satellite–Administrative Divergence in Mongolia: Multi-Sensor Evidence from Ulaanbaatar and Pastoral Provinces

Urban monitoring in rapidly growing dryland cities is difficult because satellite signals and administrative records capture different aspects of settlement change and can perform differently across land-cover contexts. Mongolia provides a useful case because urban growth is conc...

Pallas’s cat at the capital’s gates: persistence in a changing Mongolian landscape

Abstract Small carnivores, such as the Pallas’s cat ( Otocolobus manul ), play important ecological roles but remain poorly studied in many parts of their range, particularly in landscapes undergoing rapid human-induced change. We investigated Pallas’s cat occupancy and activity...

Exploring baryon semileptonic decays through polarization and entanglement

Abstract The unitarity of the Cabibbo–Kobayashi–Maskawa (CKM) matrix is a cornerstone of the standard model (SM). Precise tests of this unitarity require independent determinations of its elements, such as | V us |, which governs the transition between strange and up quarks. Curr...

On the Origin and Semantics of Chinggis Khan’s White Banner

Abstract All nations of the world are expressed through the meaningful phrase “The Five Colors and the Four Foreigners” (Tavan Ungu, Durvun Khari), while the political ideology of a sovereign known as the “Khan of the Nine Banners” – who reigns over them all – emerged over a thou...

Soil Carbon Recovery and Hydrological Buffering in Mongolian Rangelands: Local Benefits and Limits of Earth-System Connectivity

Soil organic carbon (SOC) restoration in degraded drylands is increasingly promoted for climate mitigation and hydrological co-benefits, yet the scale at which these benefits remain detectable remains uncertain. We therefore evaluate SOC recovery and its hydrological effects acro...

Pilot Evaluation of ddPCR-Based NIPT for Fetal Trisomy Screening in Advanced-Maternal-Age Pregnancies in Mongolia

Background/Objectives: Advanced maternal age (≥35 years) significantly increases the risk of fetal chromosomal abnormalities, particularly trisomies 21, 18, and 13. Non-invasive prenatal testing (NIPT) based on cell-free fetal DNA (cffDNA) in maternal plasma has substantially imp...