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Showing 3851 to 3900 of 22070 works
The June 2012 North American Derecho: A testbed for evaluating regional and global climate modeling systems at cloud-re…
In this paper, we introduce a testbed for evaluating and comparing climate modeling systems at cloud resolving scales using hindcasts of the June 2012 North American derecho. The …
The coexistence of gravity waves from diverse sources during a SOUTHTRAC flight
We use observations from one of the SOUTHTRAC (Southern Hemisphere Transport, Dynamics, and Chemistry) Campaign flights in Patagonia and the Antarctic Peninsula during September 2…
A new halocarbon absorption model based on HITRAN cross-section data and new estimates of halocarbon instantaneous clea…
The article describes a new practical model for the infrared absorption of chlorofluorocarbons and other gases with dense spectra, based on HITRAN absorption cross-sections. The m…
Non-plume flood basalt volcanism before the emplacement of the Afar mantle plume head
The Ethiopia-Yemen flood basalts are spatially zoned with progressively lower TiO2 lavas from near the Afar depression toward the margins. The timing and rate of emplacement of lo…
Physicochemical and microbiological characteristics of Ras El-Ain basin, Tyr, Lebanon
Lebanon’s natural water resources are facing serious problems and approaches exhaustion. One of these issues is deteriorating performance, which is linked to unregulated resource …
A Test of Energetic Particle Precipitation Models Using Simultaneous Incoherent Scatter Radar and Van Allen Probes Obse…
Quantification of energetic electron precipitation caused by wave-particle interactions is fundamentally important to understand the cycle of particle energization and loss of the…
Integrating magnetotelluric and seismic geophysical observations to improve upper mantle viscosity estimates beneath po…
Mantle viscosity controls a variety of geodynamic processes, e.g. Glacial Isostatic Adjustment (GIA). Constraining GIA using better viscosity estimates would improve our estimates…
NASA Earth Science Technology for Earth System Digital Twins (ESDT)
As part of NASA’s Earth Science Technology Office, the Advanced Information Systems Technology (AIST) Program defines an Earth System Digital Twin (ESDT) as an interactive and int…
The AMOC needs a universally-accepted definition
The debate over the historical and future evolution of the Atlantic Meridional Overturning Circulation (AMOC) has united scientists around a single topic, but this community has y…
Non-orographic gravity waves and turbulence caused by merging jet streams
Jet streams are important sources of non-orographic internal gravity waves and clear air turbulence (CAT). We analyze non-orographic gravity waves and CAT during a merging of the …
Geometries, Driving Factors, And Connectivity Of Background Fractures At The Latemar Carbonate Platform (N. Italy): Rel…
Carbonate platform background fracture networks are rarely utilized in subsurface models, and it is unclear how they relate to regional stress (other than faults and folds) and bu…
Informed Multi-scale Approach Applied to the British Columbia Fires of Late Summer 2017
Pyrocumulonimbus clouds have a complex origin depending on fire dynamics and meteorological conditions. When a pyrocumulonimbus (PyroCb) cloud formation develops and is maintained…
Integration of an Agent-Based Model and Augmented Reality for Immersive Modeling Exploration
This work reports on the design and implementation of advanced geospatial simulations using an Agent-Based Model (ABM) integrated with an augmented reality solution for interactiv…
Updated global reference models of broadband coherent infrasound signals for atmospheric studies and civilian applicati…
The International Monitoring System (IMS) infrasound network has been established to detect nuclear explosions and other signals of interest embedded in the station specific ambie…
A quantitative typology for distinguishing active and legacy source contributions to stream water quality
Hydrochemical constituents in streams may originate from currently active sources at the surface and/or legacy sources retained in soil, slow-flowing groundwater and sediments fro…
Neglecting model parametric uncertainty can drastically underestimate flood risks
Floods drive dynamic and deeply uncertain risks for people and infrastructures. Uncertainty characterization is a crucial step in improving the predictive understanding of multi-s…
Modeling-based Framework for Analysis of Toxin Pathways through Water to Address Some Aspects of Chronic Kidney Disease…
Since first diagnosed in the early 1990s, chronic kidney disease of unknown etiology (CKDu) has markedly increased in the North Central Province in the dry zone of Sri Lanka. CKDu…
Large-Scale Meteorological Drivers of Extreme Precipitation Event and Devastating Floods of Early February 2021 in Sema…
Unusually long duration and heavy rainfall on 5-6 February 2021 causes devastating floods in Semarang. The heavy rainfall is produced by two mesoscale convective systems (MCSs). T…
Partially-Averaged Navier-Stokes Equations Model for Prediction of Turbulent Ocean Flows
The accurate simulation of oceanic turbulence is crucial to understanding global ocean circulation, impacting accurate prediction of global warming effects and national security p…
Scaling the Mixing Efficiency of Sediment-stratified Turbulence
The flux Richardson number R f , also called the mixing efficiency of stratified turbulence, is an important property of vertical mixing in oceans, lakes and the atmosphere. Measu…
Deep cycle turbulence in Atlantic and Pacific cold tongues
Multiyear turbulence measurements from oceanographic moorings in the equatorial Atlantic and Pacific cold tongues reveal similarities in deep cycle turbulence (DCT) beneath the ML…
Transforming to Open Science in the NASA Science Mission Directorate
For over 30 years, NASA Science Mission Directorate has been a world leader in making the data from its flagship missions available for anyone to use. This data represents a signi…
The impact of ice base topography, basal channels and subglacial discharge on basal melting — an exemplary numerical st…
Realistically approximating the basal melting of ice shelves is critical for reliable climate model projections and the process representations in ice-ocean interaction. In this r…
Teleconnected tide gauges record the 20th century enhancement of decadal climate variability
Changes in the amplitude of decadal climate variability over the 20th century have been noted, with most evidence derived from tropical Pacific sea surface temperature records. Ho…
Tracking the Cracking: a Holistic Analysis of Rapid Ice Shelf Fracture Using Seismology, Geodesy, and Satellite Imagery…
Ice shelves regulate the stability of marine ice sheets. We track fractures on Pine Island Glacier , a quickly-accelerating glacier in West Antarctica that contributes more to sea…
Evaluation of the N2O rate of change to understand the stratospheric Brewer-Dobson Circulation in a Chemistry-Climate M…
The Brewer-Dobson Circulation (BDC) determines the distribution of long-lived trac- ers in the stratosphere; therefore, their changes can be used to diagnose changes in the BDC. W…
Uncompensated claims to fair emission space risk putting Paris Agreement goals out of reach
Addressing questions of equitable contributions to emission reductions is important to facilitate ambitious global action on climate change within the ambit of the Paris Agreement…
GOLD Mission’s Observation about the Geomagnetic Storm Effects on the Nighttime Equatorial Ionization Anomaly (EIA) and…
The nighttime ionospheric response to a geomagnetic storm occurred on 23-29 September 2020 is investigated over the South American, Atlantic, and West African longitude sectors us…
Topological relationship-based flow direction modeling: stream burning and depression filling
Flow direction modeling consists of (1) an accurate representation of the river network and (2) digital elevation model (DEM) processing to preserve characteristics with hydrologi…
Electromagnetic/acoustic coupling in partially-saturated porous rocks: An extension of Pride’s theory
In this paper a set of equations governing the electromagnetic/acoustic coupling in partially-saturated porous rocks in the low-frequency regime is derived. The equations are obta…
Mathematics of circulation in arbitrary fluid property spaces
Projecting fluid systems onto coordinates defined by fluid properties (e.g., pressure, temperature, tracer concentration) can reveal deep insights, for example into the thermodyna…
Supraglacial Lake Depth Estimation Using ICESat-2 Over Amery and Nansen Ice Shelves, Antarctica Final Paper Number: C55…
Ice shelves play an important role in Antarctic mass balance by buttressing grounded ice. Supraglacial lakes can threaten the stability of ice shelves through the mechanisms of hy…
Variable Phytoplankton Iron Quotas Modify Marine Biogeochemistry and Dampen the Response to Varying Atmospheric Iron De…
Dissolved iron (dFe) plays an important role in regulating marine biological productivity. In high nutrient, low chlorophyll (HNLC) regions (> 33% of the global ocean) iron is the…
Impact of Inherited Geometries on Syn-orogenic Foreland Basin Architecture
We use a Landscape Evolution Model (FastScape S2S) to explore the impact of inherited topography in the foreland domain of a rising mountain range on its stratigraphic architectur…
Discrete Aurora at Mars: Dependence on Upstream Solar Wind Conditions
Discrete aurora at Mars, characterized by their small spatial scale and tendency to form near strong crustal magnetic fields, are emissions produced by particle precipitation into…
Automatic detection of volcanic thermal features using satellite observations
Satellite observations are widely used to investigate, monitor, and forecast volcanic activity. Spaceborne thermal infrared (TIR) measurements of high-temperature volcanic feature…
Topological Structure of Moist Equatorial Waves
Symmetries and topology have been actively introduced currently to characterize the mode structure of waves in various systems physics, giving rise to the concepts of topological …
Modeling global carbon and water fluxes and hyperspectral canopy radiative transfer simultaneously using a next generat…
Recent progress in satellite observations has provided unprecedented opportunities to monitor vegetation activity on the global scale. However, a major challenge in fully utilizin…
Late Holocene Paleohurricane Reconstruction from the Central Texas Shelf, Western Gulf of Mexico, USA
Paleotempestology assists in extending the instrumental storm record through sedimentary-based, high-resolution records of storms over millennia. A fundamental understanding of th…
Drivers of Low-Frequency Sahel Precipitation Variability: Comparing CMIP5 and CMIP6 with Observations
We examine and contrast the simulation of Sahel rainfall in phases 5 and 6 of the Coupled Model Intercomparison Project (CMIP5 and CMIP6). On average, both ensembles grossly under…
Submesoscale Variability in a Mesoscale Front Captured by a Glider Mission in the Gulf of Finland, Baltic Sea
Modern research methods enable unfolding the structure of the water column with higher resolution than ever revealing the importance of submesoscale. Submesoscale processes have i…
A rotation procedure to improve seasonally varying Empirical Orthogonal Function bases for MJO indices
Various indices have been defined to characterize the phase and amplitude of the Madden-Julian oscillation (MJO). One widely used index is the Outgoing Longwave Radiation (OLR) ba…
Improving the Quality of Tidal Gravimetric Recordings
This study presents the application of broadband seismic recordings in improving the quality of tidal gravimetric recordings, especially during strong earthquakes. Four sites in W…
Intercomparison of air quality models in a megacity: Towards an operational ensemble forecasting system for São Paulo
An intercomparison of four air quality models is performed in the tropical megacity of Sao Paulo with the perspective of developing an air quality forecasting system based on a re…
The Data Assimilation Research Testbed; a Suite of Tools for Understanding the Earth System with Confidence.
Society’s ability to make wise decisions depends onan accurate understanding of the current state of Earthand on an ability to predict future states.The Data Assimilation Research…
Progress in Developing a Prototype Science Pipeline and Full-Volume, Global Hyperspectral Synthetic Data Sets for NASA'…
The Surface Biology and Geology (SBG) mission is one of the core missions of NASA’s Earth System Observatory (ESO). SBG will acquire high resolution solar-reflected spectroscopy a…
Sediments within the icy North Polar Deposits of Mars record recent Impacts and Volcanism
The North Polar Layered Deposits (NPLD) of Mars are ice-rich sedimentary layers that formed under the influence of Mars’ modern climate and thus record the recent climatic history…
Developing Essential Water Variables (EWVs) to Support Water Cycle Research and Water Sustainability Applications
The initial list of Essential Water Variables (EWVs) evolved from wide meta-surveys of water data needs for research and applications that were carried out in 2010 to support GEO …
Experimental Investigation of the Micromechanical Basis for the Compactive Yield Behavior of a High Porosity Sandstone
Understanding rock mechanical behavior, especially the onset and nature of yield (i.e. permanent deformation), is critical to ensure safe and sustainable operations in many geolog…
The Importance of Long-term Observations for Understanding Dryland Soil-Water-Vegetation-Climate Dynamics
The Southwest Watershed Research Center (SWRC) of the United States Department of Agriculture-Agricultural Research Service has been conducting arid and semiarid (dryland) watersh…
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