ENSO-induced Latitudinal Variation of the Subtropical Jet Modulates Extreme Winter Precipitation over the Western Himalaya

Advances in Atmospheric Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract In this study, we investigate the complex relationship between western disturbances (WDs), El Niño–Southern Oscillation (ENSO), and extreme precipitation events (EPEs) in Himalaya (WH) during extended winter season (November–March). WDs west of WH coincide with 97% recorded EPEs, contributing substantially (32% winter, 11% annually) to total within WH. are 6% less frequent 4% more intense Niño than La Niña During (compared Niña) years, co-occurring EPEs significantly associated 17% higher moisture transport over “WH box” (the selected region where most occurs). This results twice EPE frequency periods periods. A substantial southward shift (∼180 km) subtropical jet (STJ) axis brings WD tracks further south towards their primary sources, especially Arabian Sea. We have shown that both pass typical latitudes levels vertically integrated flux (VIMF) them. VIMF convergence pentile is 5.7 times weakest, 3.4 second lowest latitude highest. Overall, study demonstrates a direct link changes latitudinal position intensity STJ, convergence, which leads occurrence ENSO phases.

Language: Английский

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Western disturbances and climate variability: a review of recent developments

Weather and Climate Dynamics, Journal Year: 2025, Volume and Issue: 6(1), P. 43 - 112

Published: Jan. 9, 2025

Abstract. Western disturbances (WDs) are synoptic-scale weather systems embedded within the subtropical westerly jet. Manifesting as upper-level troughs often associated with a lower-tropospheric low over western or northern India, they share some dynamical features extratropical cyclones. WDs most common during boreal winter (December to March), which bring majority of precipitation – both rain and snow Himalaya, well surrounding areas north Pakistan, Tibetan Plateau. also hazards such heavy snowfall, hailstorms, fog, cloudbursts, avalanches, frost, cold waves. In this paper, we review recent developments in understanding their impacts. Over last decade, studies have collectively made use novel data, analysis techniques tracking algorithms, increasing availability high-resolution climate models. This is separated into six main sections structure thermodynamics, impacts, teleconnections, modelling experiments, forecasting at range scales, paleoclimate change each motivated brief discussion accomplishments limitations previous research. A number step changes synthesised. Use new frameworks algorithms has significantly improved knowledge WD variability, more frequentist approach can now be taken. Improved observation helped quantification water security Himalaya. Convection-permitting models our how interact Himalaya trigger natural hazards. Improvements future experiments explain impacts respond large-scale anthropogenic forcings. We end by summarising unresolved questions outlining key research topics.

Language: Английский

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Assessing societal perceptions and adaptive responses to GLOF and related hazards in the upper Indus Basin, Pakistan

Deleted Journal, Journal Year: 2025, Volume and Issue: 7(3)

Published: Feb. 18, 2025

Language: Английский

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An agenda for future Social Sciences and Humanities research on energy efficiency: 100 priority research questions

Humanities and Social Sciences Communications, Journal Year: 2022, Volume and Issue: 9(1)

Published: June 30, 2022

Decades of techno-economic energy policymaking and research have meant evidence from the Social Sciences Humanities (SSH)-including critical reflections on what changing a society's relation to (efficiency) even means-have been underutilised. In particular, (i) SSH too often sidelined and/or narrowly pigeonholed by policymakers, funders, other decision-makers when driving agendas, (ii) setting SSH-focused agendas has not historically embedded inclusive deliberative processes. The aim this paper is address these gaps through production agenda outlining future priorities for efficiency. A Horizon Scanning exercise was run, which sought identify 100 priority questions efficiency research. This included 152 researchers with prior expertise efficiency, who together spanned 62 (sub-)disciplines SSH, 23 countries, full range career stages. resultant were inductively clustered into seven themes as follows: (1) Citizenship, engagement knowledge exchange in efficiency; (2) Energy equity, justice, poverty vulnerability; (3) everyday life practices consumption production; (4) Framing, defining measuring (5) Governance, policy political issues around (6) Roles economic systems, supply chains financial mechanisms improving (7) interactions, unintended consequences rebound effects interventions. Given consistent centrality programmes, highlights that well-developed approaches are ready be mobilised contribute development, understand implications, measures governance solutions. Implicitly, it also emphasises heterogeneity can produced. will use both those new energy-SSH field (including policyworkers), learnings capabilities capacities energy-SSH, established researchers, insights collectively held futures

Language: Английский

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Evaluating future water security in the upper Yangtze River Basin under a changing environment

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 889, P. 164101 - 164101

Published: May 18, 2023

Language: Английский

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Sensemaking for entangled urban social, ecological, and technological systems in the Anthropocene

npj Urban Sustainability, Journal Year: 2023, Volume and Issue: 3(1)

Published: June 26, 2023

Abstract Our urban systems and their underlying sub-systems are designed to deliver only a narrow set of human-centered services, with little or no accounting understanding how actions undercut the resilience social-ecological-technological (SETS). Embracing SETS perspective creates opportunities for novel approaches adaptation transformation in complex environments. We: i) frame through shift from control entanglement, ii) position thinking as sensemaking create repertoires responses commensurate environmental complexity (i.e., requisite complexity), iii) describe modes system structures functions basic tenets build complexity. is an undertaking reflexively bring sustained adaptation, anticipatory futures, loose-fit design, co-governance into organizational decision-making help reimagine institutional processes entangled SETS.

Language: Английский

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Hydrological extremes and climatic controls on streamflow in Jhelum basin, NW Himalaya

Theoretical and Applied Climatology, Journal Year: 2023, Volume and Issue: 151(3-4), P. 1729 - 1752

Published: Jan. 6, 2023

Language: Английский

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Significant role of permafrost in regional hydrology of the Upper Indus Basin, India

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 919, P. 170863 - 170863

Published: Feb. 8, 2024

Language: Английский

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Estimates of Glaciers Mass Balance and Volume in Baspa Basin, Indian Himalaya

Journal of the Indian Society of Remote Sensing, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Language: Английский

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From fragmentation to consolidation: An integrated approach for multidimensional analysis of water security in Langat River Basin, Malaysia

Environmental Science & Policy, Journal Year: 2025, Volume and Issue: 169, P. 104067 - 104067

Published: April 25, 2025

Language: Английский

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