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The Craig-Sneyd analytic solutions to the Parker problem
This paper follows up on the conclusion by Craig and Sneyd (2005) that the solutions to a linearized magnetostatic problem are counterexamples to the magnetostatic model of...- publication PDF
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Performance bounds for particle filters using the optimal proposal
Particle filters may suffer from degeneracy of the particle weights. For the simplest "bootstrap" filter, it is known that avoiding degeneracy in large systems requires that the...- publication PDF
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High ice water content conditions associated with wintertime elevated...
Aircraft flying through areas of high ice water content (HIWC) can experience engine damage and/or failure. HIWC is typically associated with convection and the microphysical...- publication PDF
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Novel measures for summarizing high-resolution forecast performance
In ascertaining the performance of a high-resolution gridded forecast against an analysis, called the verification set, on the same grid, care must be taken to account for the...- publication PDF
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Calibration of machine learning-based probabilistic hail predictions for...
In this study, we use machine learning (ML) to improve hail prediction by postprocessing numerical weather prediction (NWP) data from the new High-Resolution Ensemble Forecast...- publication PDF
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Accuracy assessment and correction of Vaisala RS92 radiosonde water vapor...
Relative humidity (RH) measurements from Vaisala RS92 radiosondes are widely used in research and operational applications, but their accuracy is not well characterized as a...- publication PDF
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Ensemble-based forecast uncertainty analysis of diverse heavy rainfall events
This study examines widespread heavy rainfall over 5-day periods in the central and eastern United States. First, a climatology is presented that identifies events in which more...- publication PDF
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Limitations of one-dimensional mesoscale PBL parameterizations in...
Mesoscale models are considered to be the state of the art in modeling mountain-wave flows. Herein, the authors investigate the role and accuracy of planetary boundary layer...- publication PDF
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Global Atmospheric Circulation Statistics, 1000-1 mb
Daily global geopotential height grids covering 70-1 mb have been combined with conventional National Meteorological Center geopotential analyses over 1000-100 mb to produce a...- publication PDF
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A comprehensive in situ and remote sensing data set from the Arctic CLoud...
The Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) campaign was carried out north-west of Svalbard (Norway) between 23 May and 6 June 2017. The...- publication PDF
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Large-eddy simulation of the stratocumulus-capped boundary layer with...
Large-eddy simulation (LES) has been an essential tool in the development of theory and parameterizations for clouds, but when applied to stratocumulus clouds under sharp...- publication PDF
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Recent tropical expansion: Natural variability or forced response?
Previous studies have documented a poleward shift in the subsiding branches of Earth's Hadley circulation since 1979 but have disagreed on the causes of these observed changes...- publication PDF
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Nitrate deposition to surface snow at Summit, Greenland, following the 9...
This study considers whether spikes in nitrate in snow sampled at Summit, Greenland, from August 2000 to August 2002 are related to solar proton events. After identifying...- publication PDF
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Explaining solar cycle effects on composition as it relates to the winter anomaly
The solar cycle variation of F₂ region winter anomaly is related to solar cycle changes in the latitudinal winter-to-summer difference of O/N₂. Here we use the National Center...- publication PDF
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Variability in the sensitivity among model simulations of permafrost and...
A significant portion of the large amount of carbon (C) currently stored in soils of the permafrost region in the Northern Hemisphere has the potential to be emitted as the...- publication PDF
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Impact of HIWIND balloon measurements on thermospheric density models
The recent HIWIND (High-Altitude Interferometer Wind Observations) balloon measurements have revealed persistent equatorward winds in the dayside thermosphere during...- publication PDF
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Projecting ozone hole recovery using an ensemble of chemistry-climate models...
Calculating a multi-model mean, a commonly used method for ensemble averaging, assumes model independence and equal model skill. Sharing of model components amongst families of...- publication PDF
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Aerosol effects on stratocumulus water paths in a PDF-based parameterization
Successful simulation of aerosol indirect effects in climate models requires parameterizations that capture the full range of cloud-aerosol interactions, including positive and...- publication PDF
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Multi-lidar wind resource mapping in complex terrain
Scanning Doppler lidars have great potential for reducing uncertainty of wind resource estimation in complex terrain. Due to their scanning capabilities, they can measure at...- publication PDF
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Coupling an advanced land surface-hydrology model with the Penn State-NCAR...
This paper addresses and documents a number of issues related to the implementation of an advanced land surface-hydrology model in the Penn State-NCAR fifth-generation Mesoscale...- publication PDF
