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Tiered approach to resilience assessment
Regulatory agencies have long adopted a three-tier framework for risk assessment. We build on this structure to propose a tiered approach for resilience assessment that can be...- publication PDF
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Seismic discrimination of thermal and magnetic anomalies in sunspot umbrae
Efforts to model sunspots based on helioseismic signatures need to discriminate between the effects of (1) a strong magnetic field that introduces time-irreversible, vantage-...- publication PDF
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Influence of the El Niño Southern Oscillation on the middle and upper atmosphere
Based on Whole Atmosphere Community Climate Model (WACCM) simulations, Pedatella and Liu (2012) recently demonstrated that significant interannual variability occurs in...- publication PDF
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Improvements in wintertime surface temperature variability in the Community...
The Community Earth System Model (CESM) is widely used for the prediction and understanding of climate variability and change. Accurate simulation of the behavior of near...- publication PDF
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Investigating remote-sensing techniques to reveal stealth coronal mass ejections
Eruptions of coronal mass ejections (CMEs) from the Sun are usually associated with a number of signatures that can be identified in solar disc imagery. However, there are cases...- publication PDF
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Rotational transport on a sphere: Local node refinement for radial basis functions
This paper develops an algorithm for radial basis function (RBF) local node refinement and implements it for vortex roll-up and transport on a sphere. A heuristic based on an...- publication PDF
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Single-point inversion of the coronal magnetic field
The Fe XIII 10747 and 10798 Ã lines observed in the solar corona are sensitive to the coronal magnetic field in such a way that, in principle, the full vector field at a point...- publication PDF
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Seasonal surface urban energy balance and wintertime stability simulated...
The performance of three urban land-surface models, run in off-line mode, with their default external parameters, is evaluated for two distinctly different sites in Helsinki:...- publication PDF
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Spatio-temporal modelling of weekly malaria incidence in children under 5...
Malaria is a major cause of morbidity and mortality in Mozambique. We present a malaria early warning system (MEWS) for Mozambique informed by seven years of weekly case reports...- publication PDF
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Historical total ozone radiative forcing derived from CMIP6 simulations
Radiative forcing (RF) time series for total ozone from 1850 up to the present day are calculated based on historical simulations of ozone from 10 climate models contributing to...- publication PDF
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Spaceborne measurements of formic and acetic acids: A global view of the...
Formic (HCOOH) and acetic acids (CH3COOH) are the most abundant carboxylic acids in the Earth's atmosphere and key compounds to aqueous-phase chemistry. Here we present the...- publication PDF
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Predicting the severity of spurious "double ITCZ" problem in CMIP5 coupled...
The severity of the double Intertropical Convergence Zone (DI) problem in climate models can be measured by a tropical precipitation asymmetry index (PAI), indicating whether...- publication PDF
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A comparison of OEM CO retrievals from the IASI and MOPITT instruments
Observations of atmospheric carbon monoxide (CO) can only be made on continental and global scales by remote sensing instruments situated in space. One such instrument is the...- publication PDF
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Innovations in winter storm forecasting and decision support services
Winter storms are disruptive to society and the economy, and they often cause signifi-cant injuries and deaths. Innovations in winter storm forecasting have occurred across the...- publication PDF
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Large eddy simulation of the bubbly ocean: New insights on subsurface bubble...
The evolution of bubbles in a turbulent oceanic boundary layer is simulated using a multi-size multi-gas bubble model coupled with a Large Eddy Simulation model. Bubbles...- publication PDF
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Twentieth century climate model response and climate sensitivity
Climate forcing and climate sensitivity are two key factors in understanding Earth's climate. There is considerable interest in decreasing our uncertainty in climate...- publication PDF
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The longitudinal variation of the daily mean thermospheric mass density
This study uses the GRACE (Gravity Recovery And Climate Experiment) and CHAMP(CHAllenging Minisatellite Payload) accelerometer measurements from 2003 to 2008. These measurements...- publication PDF
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Tropical thin cirrus and relative humidity observed by the Atmospheric...
Global observations of cloud and humidity distributions in the upper troposphere within all geophysical conditions are critically important in order to monitor the present...- publication PDF
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Global soil moisture estimation by assimilating AMSR-E brightness...
Very few frameworks exist that estimate global-scale soil moisture through microwave land data assimilation (DA). Toward this goal, such a framework has been developed by...- publication PDF
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Wind and temperature retrievals in the 17 May 1981 Arcadia, Oklahoma...
The feasibility of using an ensemble Kalman filter (EnKF) to retrieve the wind and temperature fields in an isolated convective storm has been tested by applying the technique...- publication PDF