A5056600450- Cryospheric studies and observations
- Climate change and permafrost
- Landslides and related hazards
- Arctic and Antarctic ice dynamics
- Winter Sports Injuries and Performance
- Climate variability and models
- Meteorological Phenomena and Simulations
- Environmental and Cultural Studies in Latin America and Beyond
- Geology and Paleoclimatology Research
- Flood Risk Assessment and Management
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Hydrology and Drought Analysis
- Icing and De-icing Technologies
- Magnetic Properties and Applications
- Groundwater and Isotope Geochemistry
- Climate change impacts on agriculture
- Heavy metals in environment
- Electric Motor Design and Analysis
- Induction Heating and Inverter Technology
- Water Quality and Pollution Assessment
Indian Institute of Science Bangalore
2022-2025
National Institute of Technology Arunachal Pradesh
2025
Visvesvaraya National Institute of Technology
2024
Jawaharlal Nehru University
2014-2022
Abstract. Some recent studies revealed that Himalayan glaciers were shrinking at an accelerated rate since the beginning of 21st century. However, climatic causes for this shrinkage remain unclear given surface energy balance are almost nonexistent in region. In study, a point-scale analysis was performed using situ meteorological data from ablation zone Chhota Shigri Glacier over two separate periods (August 2012 to February 2013 and July October 2013) order understand response mass...
Abstract We present the updated glaciological mass balance (MB) of Chhota Shigri Glacier, longest continuous annual MB record in Hindu-Kush Karakoram Himalaya (HKH) region. Additionally, 4 years seasonal MBs are presented and analyzed using data acquired at an automatic weather station (AWS-M) installed 2009 on a lateral moraine (4863ma.s.l.). The series since 2002 is first recalculated glacier hypsometry then validated against geodetic derived from satellite stereo-imagery between 2005...
Abstract The Himalayan glaciers contribute significantly to regional water resources. However, limited field observations restrict our understanding of glacier dynamics and behaviour. Here, we investigated the long-term in situ mass balance, meteorology, ice velocity discharge Chhota Shigri Glacier. mean annual glacier-wide balance was negative, −0.46 ± 0.40 m w.e. a −1 for period 2002–2019 corresponding cumulative wastage −7.87 Winter 1.15 summer −1.35 over 2009–2019. Surface has decreased...
The Himalaya plays a vital role in regulating the freshwater availability for nearly billion people living Indus, Ganga, and Brahmaputra River basins. Due to climate change constantly evolving human-hydrosphere interactions, including land use/cover changes, groundwater extraction, reservoir or dam construction, water has undergone significant change, is expected further future. Therefore, understanding spatiotemporal evolution of hydrological cycle over its river basins been one most...
Abstract We present the first-ever mass-balance (MB) observation (2014–19), reconstruction (between 1978 and 2019) sensitivity of debris-free Stok glacier (33.98°N, 77.45°E), Ladakh Region, India. In-situ MB was negative throughout study period except in 2018/19 when witnessed a balanced condition. For modelling, three periods were considered based on available data. Period I (1978–87, 1988/89) near balance condition (−0.03 ± 0.35 m w.e. −1 ) with five positive years. Whereas II (1998–2002,...
ABSTRACT Glacier mass balance and runoff are simulated from 1955 to 2014 for the catchment (46% glacier cover) containing Chhota Shigri (Western Himalaya) using gridded data three regional climate models: (1) Rossby Centre atmospheric model v.4 (RCA4); (2) REgional atmosphere MOdel (REMO); (3) Weather Research Forecasting Model (WRF). The input downscaled simulation grid (300 m) calibrated with point measurements of temperature precipitation. Additional is daily potential global radiation...
Abstract Understanding changes in glacier mass balances is essential for investigating climate changes. However, glacier‐wide determined from geodetic observations do not provide a relevant climatic signal as they depend on the dynamic response of glaciers. In situ point balance measurements direct but show strong spatial variability that difficult to assess heterogeneous over several decades. To address this issue, we propose nonlinear statistical model takes into account and temporal...
Abstract. Analysis of surface energy balance (SEB) at the glacier/snow is most comprehensive way to explain atmosphere–glacier/snow interactions, but that requires extensive data. In this study, we have analysed an 11-year (2009–2020) record meteorological dataset from automatic weather station installed 4863 ma.s.l. (above sea level) on a lateral moraine Chhota Shigri Glacier, western Himalaya. The study was carried out over winter months (December April) understand SEB drivers and snow...
Abstract. Delineation of Glaciers is a challenging task in the Himalaya due to its complex topography, cloud cover, seasonal snow hillshade, debris cover. Glacio-hydrological studies including mass balance, run-off, and dynamic modelling rely on availability consistent reliable glacier inventory datasets. This article data set presents homogenous, multidecadal glaciers Chandra-Bhaga Basin (CB Basin), western Himalaya, for 1993, 2000, 2010, 2019. Landsat Thematic Mapper (TM), Enhanced mapper...
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Abstract. In High Mountain Asia (HMA) ongoing climate change threatens mountain water resources as glaciers melt, and the resulting changes in runoff availability are likely to have considerable negative impacts on ecological human systems. Numerous assessments of ways which these will respond warming been published over past decade. Many used model projections argue that HMA melt significantly this century. However, we show is only one way might respond. An alternative pathway increasing...
Over the past two decades, glaciers in Himalaya-Karakoram (HK) region have exhibited heterogeneous but accelerated mass loss. Factors driving this loss, such as atmospheric warming and snowfall variability, been extensively studied by analyzing precipitation air temperature data, often derived from meteorological reanalysis data. However, data ERA5 exhibit significant biases uncertainties, resulting large spread glacier balance estimates across studies. To address this, we propose to use...
Abstract Improving the knowledge on Himalayan glaciers mass balance is a key to understand present and past annual atmospheric variations future water availability in region. Here, we glaciological for Patsio Glacier, located Himachal Pradesh (India), western Himalaya. Annual glacier-wide was measured 7 consecutive years (2010/11 2016/17) winter 6 (2011/12 2016/17). The cumulative over this period −2.35 ± 0.37 m w.e. corresponding mean −0.34 −1 . ablation gradient excluding debris-covered...
Abstract The impact of surface melt patterns and the Indian summer monsoon (ISM) is examined on varying contributions end member (snow, glacier ice, rain) to proglacial streamflow during ablation period (June–October) in Chhota Shigri glaciated basin, Western Himalaya. Isotopic seasonality observed catchment precipitation was generally reflected runoff (supraglacial stream) shows a shift major water source season. Isotopically correlated (δ 18 O–δD) high deuterium intercept suggests that...
Abstract. Analysis of surface energy balance (SEB) at the glacier is most comprehensive way to explain atmosphere-glacier interactions but that requires extensive data. In this study, we analyse an 11-year (2009–2020) record meteorological dataset from automatic weather station installed 4863 m a.s.l., on a lateral moraine Chhota Shigri Glacier in western Himalaya. The study was carried out over winter months (December April) understand SEB drivers and snow sublimation. Further, examine role...