earth_science papers | Gist.Science

Dendroclimatological Study of Pinus roxburghii Growth Variation along an Elevational Gradient in the Lesser Himalayas, Pakistan

This study utilizes tree-ring chronologies from *Pinus roxburghii* across an elevational gradient in the Lesser Himalayas of Pakistan to demonstrate that March precipitation and temperature are dominant growth drivers, while revealing that elevation modulates the seasonal breadth of climate sensitivity, with upper elevations showing the strongest response to hydroclimatic variability.

Mehvish Majeed, Eman Majeed, Sahar Abidi, Sher Shah, Sohaib Muhammad2026-07-22

📄 earth_science

GIS-Integrated Analysis of Spatial and Vertical Variability in Airborne Pollen and Fungal Spore Concentrations Across an Urban Campus in Islamabad, Pakistan

This study utilized a custom low-cost sampler and GIS analysis to reveal significant spatial and vertical variability in airborne pollen and fungal spore concentrations across an urban campus in Islamabad, demonstrating that bioaerosol levels are strongly influenced by local land cover, wind patterns, and sampling height.

Fatima Filza Hassan2026-07-22

📄 earth_science

Establishing baselines for trophic rewilding: mammal density, occupancy, and activity patterns in two Italian sites

This study establishes a comprehensive baseline of mammal density, occupancy, and activity patterns in two central Italian sites using camera trapping, providing essential pre-intervention data to guide and evaluate future trophic rewilding efforts.

Niccolò Ceci2026-07-22

📄 earth_science

Understanding of Deepwater Sedimentary Model based on Geophysical Data Interpretation to identify the possible scope of Hydrogen Exploration in the Northern Part of the Andaman area, India

This study utilizes geophysical data interpretation to develop a deepwater sedimentary model for the Andaman basin, identifying tectonic and stratigraphic features conducive to the generation and accumulation of geologic hydrogen via serpentinization as a potential carbon-neutral energy resource.

Saurabh Datta Gupta, Dhritideb Karmakar, Padmini Pujapanda, Pampa Malik, Raj Kiran, Rajeev Upadhyay, Vinay Rajak2026-07-22

📄 earth_science

Asymmetric precursors modulate western North Pacific subtropical high predictability

This study reveals that the subseasonal predictability of the western North Pacific subtropical high is inherently sign-asymmetric, with positive and negative anomaly events arising from distinct precursor pathways and exhibiting contrasting forecast spreads and sources of predictability.

Yuki Maeda, Masaki Satoh2026-07-22

📄 earth_science

When a year starts shapes global hydrological conclusions

This study introduces the first observation-based global definition of the water year, demonstrating that aligning the annual start with local hydrological cycles—rather than using an arbitrary calendar date—significantly improves the accuracy of global water-balance analyses and estimates of interannual variability.

Ashvath Kunadi, Marko Kallio, Iiro Seppä, Matti Kummu2026-07-21

📄 earth_science

Distribution and ecological risk assessment of Heavy metal contamination in surface water from Leachate of the Reppe dumpsite, Addis Ababa, Ethiopia (Rainy Season)

This study reveals that the uncontrolled leachate from the Reppe dumpsite in Addis Ababa causes extreme heavy metal contamination in surface water, particularly from cadmium, mercury, and lead, posing a severe ecological risk that far exceeds international safety limits and demands urgent remediation.

Mulugeta Tamene, Tesfaye Admasu, Taye Alemayehu, Seblework Mekonen2026-07-21

📄 earth_science

West Antarctic Ice Sheet collapse and North Atlantic meltwater reconcile Last Interglacial climate records

This study uses Earth system model simulations to demonstrate that a collapsed West Antarctic Ice Sheet combined with North Atlantic meltwater release during the Last Interglacial explains anomalous climate records and suggests the Antarctic ice sheet could contribute up to ~4 meters to global sea level.

Joseph Schnaubelt, Clay Tabor, Ran Feng, Austin Carter, Sarah Aarons, Johannes Sutter, Nicholas Golledge, Eric Steig2026-07-21

📄 earth_science

The origin of the Walker Circulation

Challenging the conventional view that oceanic upwelling drives the Walker Circulation, this study demonstrates that American landmass and orography are the fundamental drivers that anchor the circulation's subsiding branch and cool the eastern Pacific, amplified by atmospheric feedbacks.

Moritz Günther, Sarah Kang2026-07-21

📄 earth_science

Emulating the South Asian Atmospheric Variations: Framework and Inter-Comparison of Deep Learning Models

This study presents a deep learning framework that successfully emulates high-resolution South Asian atmospheric variations, including meteorological fields and ozone, by training four different architectures on WRF-Chem data, with the UNet-3blk model achieving optimal performance despite challenges in reproducing PM2.5 variability.

S Harithasree, Parishi Shah, Akash Ganguly, Imran Girach, Narendra Ojha2026-07-21

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