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Showing 39351 to 39400 of 59105 works
glenglat: a database of global englacial temperatures
Abstract. Measurements of englacial temperatures have been collected since the earliest years of glaciology, with the first measurements dating back to the mid-19th century. Altho…
Reactive nitrogen fluxes over peatland and forest ecosystems using micrometeorological measurement techniques
Abstract. Interactions of reactive nitrogen (Nr) compounds between the atmosphere and the earth's surface play a key role in atmospheric chemistry and in understanding nutrient cy…
Homogenization of Portuguese long-term temperature data series: Lisbon, Coimbra and Porto
Abstract. Three long-term temperature data series measured in Portugal were studied to detect and correct non-climatic homogeneity breaks and are now available for future studies …
Reconstructing ocean subsurface salinity at high resolution using a machine learning approach
Abstract. A gridded ocean subsurface salinity dataset with global coverage is useful for research on climate change and its variability. Here, we explore the feed-forward neural n…
Aircraft measurements of water vapor heavy isotope ratios in the marine boundary layer and lower troposphere during ORA…
Abstract. This paper presents aircraft in situ measurements of water concentration and heavy water isotope ratios D/H and 18O/16O during the NASA ObseRvations of Aerosols above CL…
Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)
Abstract. We present a chronology framework named LegacyAge 1.0 containing harmonized chronologies for 2831 pollen records (downloaded from the Neotoma Paleoecology Database and t…
Global biogeography of N <sub>2</sub> -fixing microbes: <i>…
Abstract. Marine dinitrogen (N2) fixation is a globally significant biogeochemical process carried out by a specialized group of prokaryotes (diazotrophs), yet our understanding o…
Coastal complexity of the Antarctic continent
Abstract. The Antarctic outer coastal margin (i.e. the coastline itself or the terminus or front of ice shelves, whichever is adjacent to the ocean) is a key interface between the…
GSDM-WBT: global station-based daily maximum wet-bulb temperature data for 1981–2020
Abstract. The wet-bulb temperature (WBT; TW) comprehensively characterizes the temperature and humidity of the thermal environment and is a relevant variable to describe the energ…
It’s Not Just Risk—It’s Responsibility: Changing Drivers of Home Flood Protection
Private household adaptation is a critical yet underutilised element of flood resilience. Property-level measures might reduce up to 80\% of damage if adopted in a timely manner. …
A quality-assured dataset of nine radiation components observed at the Shangdianzi regional GAW station in China (2013–…
Abstract. The New Baseline Surface Radiation (NBSR) system was established at the Shangdianzi (SDZ) regional Global Atmosphere Watch (GAW) station in 2013 to observe nine broadban…
Global oceanic diazotroph database version 2 and elevated estimate of global oceanic N <sub>2</sub>…
Abstract. Marine diazotrophs convert dinitrogen (N2) gas into bioavailable nitrogen (N), supporting life in the global ocean. In 2012, the first version of the global oceanic diaz…
Why are farmers in South India shifting from conventional ‘Green Revolution’ agriculture to natural farming? A mixed-me…
Introduction: The Green Revolution contributed to significant increases in crop production and yield in India. However, it also resulted in negative social and environmental conse…
Modelling the transport and dispersion of volcanic co-PDC ash clouds using NAME: an evaluation of source geometry and m…
Pyroclastic density currents (PDCs) are gravity currents that frequently form during explosive volcanic eruptions. These ground-hugging density currents consist of high-temperatur…
Homogenization of Elastic Wave Equation using Renormalization Group Theory
Seismic waves traveling through the Earth interact with heterogeneities of all scales along their path. Generally, we are interested in travel time associated with coarse-scale st…
Bending the Sierra Madre Oriental: A Paleocene Orocline
The Sierra Madre Oriental belt of the Mexican thin-skinned fold-and-thrust belt, which formed during the Late Cretaceous due to the subduction of the Farallon Plate beneath North …
Factors Affecting Aboveground Carbon Storage in Mixed Oak-Pine Forests: A Multiple Regression Analysis of Southeastern …
This study investigated the factors affecting aboveground carbon storage in mixed oak-pine forests of the southeastern United States, with a particular focus on the influence of s…
Unexpected canopy gain in Earth’s mangrove forests linked to natural expansion and regrowth
Mangroves have disappeared rapidly due to deforestation and sea-level rise but can also recover through natural regrowth and restoration. However, their long-term trajectory in ar…
Hidden in plain sight? Some challenges and needs for practical planetary biosignature exploration, both home and away-A…
Identifying organic molecular biosignatures for life is challenging. Most current analytical methods were developed on Earth sediments rich in total organic carbon (TOC), and thes…
Nature’s role in national security
The ability of a nation to protect its citizens, institutions, and interests from domestic and foreign threats is one of the foundational responsibilities of any government. Howev…
Anomaly detection of Synthetic Aperture Radar Interferograms with semi-supervised machine learning
The aim of this research is to detect Earth's deformation from Interferometric Synthetic Aperture Radar (InSAR) images through a semi-supervised machine learning algorithm called …
Unified Cross-Modal Learning for Hydrological Processes Using Multi-Task Transformer Framework
Most deep learning studies in hydrology adopt single-task frameworks that address individual variables such as rainfall or streamflow independently, limiting opportunities for sha…
A Weighted Fitting Approach for Diameter Distributions from Horizontal Point Sampling
Horizontal point sampling (HPS) produces size-biased tallies that cannot be fit directly with standard probability distributions without distorting diameter distribution estimates…
ForestCast: Forecasting Deforestation Risk at Scale with Deep Learning
Deforestation is a major threat to biodiversity and the stability of the climate. Current monitoring solutions provide reactive alerts only after deforestation has occurred, rende…
Local Prediction of Temperate Forest Structure in Eastern North America Using LiDAR, Radar, and Optical Data
Forest structure underpins the emergence of ecological patterns and processes yet remains costly to measure directly at broad scales. NASA’s Global Ecosystem Dynamics Investigatio…
Past, Present and Future of the Indus Water Treaty: Implications for Transboundary Water Governance Challenges and Mode…
The Indus Water Treaty has been applauded as a successful water sharing agreement to allocate the water of Indus River system between India and Pakistan. Yet a set of diplomatic, …
Formation of Parasequence-like Successions at Different Depositional Hierarchical Scales
The interpretation of parasequences is often complicated by ambiguities in the definition of key surfaces, uncertainties in interpretation of facies successions, varying data qual…
Arctic Plastification: Climate-driven amplification of plastic pollution through accumulation and fragmentation
Rapid warming of the Arctic, known as Arctic Amplification, is reshaping ice, ocean, and coastal systems in ways that alter how plastic pollution accumulates and transforms in the…
A new source-to-sink synthesis of the Middle Triassic Helsby Sandstone Formation (Sherwood Sandstone Group) river syste…
Sediment grain size and mineralogy change in sediment routing systems from source to sink. A better understanding of sediment routing allows improved predictions to be made of the…
Integrating Bayesian Inference and Supervised Learning for Predictive Modeling of Coffee Rust Incidence Among Kenyan Sm…
Hemileia vastatrix a pathogenic fungus which causes coffee leaf rust, has been a significant challenge to the sustainability of Arabica coffee production in Kenya, where smallhold…
DeepSubDAS: An Earthquake Phase Picker from Submarine Distributed Acoustic Sensing Data
Given the scarcity of seismometers in marine environments, traditional seismology has limited effectiveness in oceanic regions. Submarine Distributed Acoustic Sensing (DAS) system…
Bimodal Astroclimatic Modulation of ENSO Dynamics by Net Shortwave Solar Radiation
The persistent Spring Predictability Barrier (SPB) suggests that current ENSO models may omit a crucial external forcing. This study identifies and quantifies a bimodal, season-de…
Emerging Remote Sensing Tools for Comprehensive Cryosphere Assessment
This review synthesizes current remote sensing (RS) applications for monitoring Earth's cryosphere, encompassing ice sheets, glaciers, sea ice, snow cover, permafrost, and mountai…
Comparative Analysis of GHG Calculation Methodologies in Aviation
The aviation sector faces mounting pressure to deliver transparent, comparable greenhouse-gas (GHG) disclosures under European Sustainability Reporting Standards (ESRS). We provid…
Blue Nitrogen: Global Rates and Economic Importance
Nitrogen pollution drives widespread coastal ecosystem collapse. In this paper, we argue that mangrove forests represent an undervalued natural mitigation solution for nitrogen po…
Fallowed Heat Island: High surface temperature from fallowed agricultural lands increases nearby water demand and reduc…
Agricultural land fallowing is a practice of temporarily idling farmlands to maximize soil water storage, restore plant nutrients, and minimize soil erosion hazards. Despite the b…
Mars' Lowest and Highest Points Revisited
We present revised values for Mars’ extreme elevations using a blended digital elevation model (DEM) that combines altimetry collected from the Mars Orbiter Laser Altimeter (MOLA)…
A Static Enthalpy Equilibrium Approach to the Stability of Saturated Sands (Version 2)
This preprint presents a physical formulaton for the stability of saturated granular systems based on a static enthalpy equilibrium. The approach definnes equilibrium as the balan…
Aerial LiDAR Based, Source Resolved Methane Emissions Inventory: Permian Basin Case Study for Benchmarking U.S. Emissio…
Reducing methane emissions is one of the quickest ways to slow near-term warming, yet building accurate inventories to track progress towards reduction targets remains challenging…
Managing Squeezing Rock Mass with TBM Data Analysis: Rail Link Rishikesh – Karnaprayag (India)
The 125.2 km rail link Rishikesh–Karnaprayag in the Lesser Himalayas of India represents a benchmark in mechanized tunnelling through complex geology. This paper focuses on Tunnel…
Intermittent supershear rupture punctuated by barrier-induced stopping phase during the 2025 Mw 7.8 Myanmar Earthquake:…
Supershear rupture has been investigated by many studies, yet its exact characteristics during natural earthquakes are not fully clear, due to the paucity of near-field constraint…
Climate factors related to the dengue incidence in Costa Rica and future projections under scenario SSP5-8.5.
This article has three objectives: 1) modeling the climate-dengue relationship at the smallest administrative division (districts) using high-resolution data; 2) use of an objecti…
MPsizeBase: a database for particle size distributed and size aligned environmental microplastic data
Understanding the sources, dispersion, and health impacts of microplastic (MP) pollution requires quantitative observations in terms of MP number and/or mass concentrations. Measu…
Response of atmospheric convection to surface drying: new insights from isentropic analysis
There is strong evidence that the atmospheric moisture content of several solar system planets, including Earth, has varied over their lifetimes. A growing body of work also docum…
Nondimensional parameter regimes of Arctic ice keel-ocean flow interactions
Sea ice keels modulate upper-ocean momentum and mixing through internal wave (IW) generation, yet their effects are difficult to represent in climate models because their spatio-t…
Reversal of extreme precipitation trends over the Northeast US in response to aggressive climate mitigation in GFDL SPE…
Rapid reductions in greenhouse gas (GHG) concentrations are increasingly included in mitigation strategies, yet the response of regional climate extremes to such reductions remain…
Global presence and absence of ultra-low velocity zones as seen by Sdiff postcursors
The core-mantle boundary is a region of significant lateral heterogeneity. Two antipodal large low-velocity provinces (LLVPs) dominate the lower mantle, while smaller but more ext…
Complex Realities, Simple Signals? Global Evaluation of Early Warning Signals for Forest Mortality Events
Forests around the world are increasingly experiencing large-scale regional mortality events as a result of droughts and heat waves. Despite their considerable impacts on the mate…
Effects of cementation on the cyclic resistance of granular soils with presence of initial static shear stress
In engineering applications such as non-invasive cementation beneath existing structures or naturally induced cementation around piles, cementation can develop in soils that have …
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