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Showing 17351 to 17400 of 22070 works

The role of physical, chemical, and biological processes in the simulated warming effects on future ocean acidification

The effect of warming-induced changes in different marine physical, chemical, and biological processes on ocean acidification has been largely overlooked. This study uses an Earth…

COMMERCIAL SYNTHETIC APERTURE RADAR DATA FOR SURFACE DEFORMATION AND CHANGE

The commercial synthetic aperture radar (SAR) market is experiencing year-over-year growth and is currently capable of imaging anywhere in the world within an hour at X-band. Surf…

Scales of Surface Heterogeneity Affecting the Daytime Convective Atmosphere over Land

Coupled land-atmosphere models exchange grid cell mean values of states and fluxes even as they separately simulate subgrid variability. The characteristics of atmospheric heterog…

Spatio-temporal variations on alluvial fan channel width in response to grain size on the channel bed under constant up…

It has been widely accepted that channel geometry on alluvial fans is predominantly controlled by upstream boundary conditions and remains stable if those conditions do not change…

Revisiting the Apollo 17 heat flow experiment: Effect of topography and thermal conductivity contrasts on lunar heat fl…

We model the subsurface thermal field of the Apollo 17 landing site in the Taurus-Littrow valley focusing on local topographic effects and refraction of heat. Topographic effects …

Stratospheric Water Vapor beyond NASA’s Aura MLS: Assimilating SAGE III/ISS profiles for a continued climate record

Stratospheric water vapor (SWV) is a greenhouse gas that has a significant, yet uncertain, impact on the Earth’s climate through its radiative effect and feedback. As the climate …

CO 2 uptake in the Pacific from 1985 to 2018: a comparative assessment of observation-and model-based estimates

 Net and anthropogenic CO 2 exchange in the Pacific represents a major contribution to the global CO 2 sink.  The Pacific is thought to have turned to a net sink of CO 2 that is…

Conservative mixing of alkaline groundwater plume with saline waters at Hamelin Pool recorded in Ba isotopic compositio…

Hamelin Pool, W.-Australia, is a natural laboratory to study stromatolite formation in a hypersaline lagoon. Stromatolitic aragonites sampled at supratidal, intertidal and subtida…

Pedogenic carbonate formation in fine-grained soils

Clumped isotope thermometry (T(∆47)) of soil carbonates provides an estimate of soil temperature at the time of mineral formation. Historically, that temperature has been interpre…

Separating DP1 and DP2 current pattern contributions to substorm-like intensifications in SML

Substorms can be identified from negative bays in the AL/SML index, which traces the minimum northward ground magnetic deflection at auroral latitudes, produced by enhancements of…

Evaluation of ice dissipation parameterizations in spectral ocean wave model WAVEWATCH III: An intercomparison analysis

not-yet-known not-yet-known not-yet-known unknown Ocean wave activity in polar seas is intensifying, so that mode…

Evaluation of ECOSTRESS Collection 2 Evapotranspiration Products: strengths and uncertainties for evapotranspiration mo…

The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) collects thermal observations from the International Space Station to support evapotranspiratio…

Evidence and Causes of an Unusual Super Plasma Bubble Occurrence During Weak Geomagnetic Conditions Over Europe

Using a cluster of ground-based and in-situ Swarm satellite observations, an unusual super plasma bubble (SPB) was observed in the ionosphere over the European longitudes during a…

Robust Multi-Decadal Variability of Madden-Julian Oscillation Amplitude in the 20th Century

Variability of the Madden-Julian Oscillation (MJO) inferred from tropical in-situ observations during 1940-2023 is examined, and compared to that derived from reanalyses. MJO asse…

Calving Mechanisms Inferred from Observations of Surface Depressions at Helheim Glacier, Greenland

Dynamical changes at the termini of tidewater glaciers may trigger sustained acceleration, thinning, and retreat, increasing a glacier’s contribution to sea level rise. However, p…

The Chalmers Cloud Ice Climatology: A novel, robust climate record of frozen cloud hydrometeor concentrations

Frozen cloud particles are an important link in the hydrological cycle and significantly influence the Earth’s energy budget. Despite their important role, observational records c…

Existence and uniqueness in ocean-atmosphere turbulent flux algorithms in E3SM

We investigate whether or not the default ocean-atmosphere turbulent flux algorithm in the Energy Exascale Earth System Model version 2 (E3SMv2) converges to unique surface fluxes…

Evaluation of Melt Pond Detection and Characterization by the DDA-bifurcate-seaice using the 2022 ICESat-2 Sea Ice Camp…

As the climate warms and the transition from a perennial to a seasonal Arctic sea-ice cover becomes imminent, knowledge of melt ponding is central to understanding changes in the …

Evaluating the Role of Internal Climate Variability and Bias Adjustment Methods on Decadal Glacier Projections

Glacier mass loss is one of the main contributors to sea-level rise and poses challenges for future water resources. Refining glacier projections and sources of uncertainty thus s…

Deep water Guided P waves

Seismic velocity inversion of upper crustal structures in deep sea is challenging, as the unique condition of thick water column often limits the applicability of conventional inv…

Planning and flying research flights during the suborbital airborne field campaigns ARCSIX and PACE-PAX

Airborne research and observations continue to be a part of a robust and resilient Earth Science Division program as defined in NASA’s decadal survey. As part of this, planning of…

Investigating Planetesimal Core Evolution with Geochemical Partitioning Experiments

Many iron meteorites sample the metallic cores of planetesimals, providing a unique opportunity to study early Solar System planetary processes. Modeling the chemical evolution du…

Topographic Changes of Intertidal Mudflat in Deep Bay (Hong Kong) Using Landsat and PlanetScope Satellite Imagery

Intertidal mudflats are productive habitats and monitoring their morphodynamics is critical to the sustainable management of their ecological values. The mudflat in Deep Bay, situ…

Modeling Anisotropic Signature of Slab-induced Mantle Plumes from Thermochemical Piles in the Lower Mantle

Seismic anisotropy, observed in the lowermost mantle near Large Low-Shear-Velocity Provinces (LLSVPs), is likely caused by strong deformation from mantle flow interacting with the…

Robustness and mechanisms of the atmospheric response over the Southern Ocean to idealized freshwater input around Anta…

Enhanced mass loss of the Antarctic ice sheet yields ocean surface freshening, cooling and sea ice expansion, which ought to drive change in the atmosphere. Using the Southern Oce…

Climate Action Maps Enable Science Centers and Museums to Make Climate Action Visible, Relatable, and Accessible

Science centers and museums are increasingly exploring a range of approaches for encouraging their visitors and communities to not only learn about climate solutions, but to disco…

A Compact Solution for Improving the Spatial Density of Observations of Large Ground Level Enhancements

Ground level enhancements (GLEs), which occur when high energy solar protons reach Earth, are a considerable space weather hazard for aviation activities. Neutron monitor (NM) obs…

Crustal Structure of the Yunnan, China Region Revealed by Adjoint Inversion of Frequency-dependent Traveltimes

We conduct a high-resolution seismic tomography for the crustal P and S-wave velocities of Yunnan region in southwestern China. Waveforms recorded at 128 broadband stations from 1…

Description and evaluation of a new contrail cirrus parameterization in the ARPEGE-Climat atmospheric model.

The impact of aviation on climate change due to CO2 emissions is well established and is associated with much less uncertainty than the non CO2 effects. Among the non CO2 effects …

A State-Dependent Model-Error Representation for Online Climate Model Bias Correction

In this study, we develop an approach to correct biases in the atmospheric component of the Community Earth System Model (CESM) using convolutional neural networks (CNNs) to creat…

Benefits of a Landfast Ice Representation on Simulated Antarctic Sea Ice and Coastal Polynya Dynamics

The Antarctic coastal marine region is a unique and highly complex environment, of which landfast sea ice and polynyas are key features, especially in the context of dense water f…

Oceanic Environmental and Indigenous Data: Reconciliation of Indigenous Data Governance and Sovereignty within Environm…

Ocean Networks Canada (ONC) straddles the nexus between community relations, infrastructure installations, and data storage. As such, ONC has opportunities to partner with Indige…

Urban vegetation effects on different urban forms to mitigate heat stress, thermal comfort and vulnerability: case of P…

Satellite surface temperatures of São Paulo city show heat islands and coolness islands due urban form. Some planned neighborhoods have street trees, green areas, appropriate urba…

Inference of regime-dependent Granger causal interactions between climate teleconnections

Regime dependencies and Granger causal relationships between tropical and extratropical teleconnections are inferred using Bayesian structure learning. Using ERA5 data, an examina…

Chasing ice crystals: interlinking cloud microphysics and dynamics in cloud seeding plumes with Lagrangian trajectories

The ice phase is a major contributor to precipitation formation over continents due to its efficiency in growing hydrometeors to large enough sizes for sedimentation. One prominen…

Extended red aurora associated with super substorm igniting the October 10, 2024 magnetic storm as revealed by citizen …

Super magnetic storm occurred on October 10, 2024, and a super substorm occurred at the beginning of the storm just after the shock arrival at 1520 UT. As a result, red aurora wer…

Natural Soils-based Oxidation Mitigates Methane Leakage from Integrity Compromised Legacy Wells

An increasing number of legacy petroleum wells are reported to suffer integrity failure, releasing methane (CH4) into the subsurface and atmosphere. Subsurface released methane is…

Quantifying benthic biolayer contributions to whole-stream reactivity by unifying surface and subsurface observations: …

The benthic biolayer is a reaction hotspot that contributes disproportionately to whole-stream reactions, including aerobic respiration and contaminant transformation. Quantifying…

Genome-Resolved Metagenomic Insights into Aquifer Microbiome Adaptations Following Two Decades of Neutral In-Situ Leach…

Neutral in-situ leaching (ISL) is a prominent technique for extracting uranium (U) from sandstone-type U deposits. However, the intricate biogeochemical processes and associated m…

Regional Sea Ice Responses to Black Carbon Emissions from the Northern and Transpolar Sea Routes

As sea ice decreases, navigation in the Arctic is becoming more feasible, and new routes are likely to emerge. However, the impact of these potential routes on sea ice remains unc…

Determination of Marine Fiber-Optic Cable Position and Acquisition Time Shift using Direct Wave Traveltime Inversion

In Distributed Acoustic Sensing (DAS), a fiber-optic cable is used as a distributed seismic sensor, with channels representing successive short sections of the fiber, spaced at de…

Predicting Methane (CH 4 ) Concentration in Transformer Oil using Linear Epsilon Support Vector Regression with Grey Re…

The reliable operation of transformers is critical to power system stability, and early fault detection in transformers can significantly reduce the risk of catastrophic failures.…

Simulating High-Resolution Climate over East Asia for the Last Glacial Maximum Utilising the Pseudo-Global Warming Appr…

To better understand the landscape dynamics and changes in habitat connectivity influenced by glacial and interglacial oscillations over the biodiversity-rich Hengduan Mountains (…

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