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The origin of major solar activity: Collisional shearing between...
Active regions (ARs) that exhibit compact polarity inversion lines (PILs) are known to be very flare productive. However, the physical mechanisms behind this statistical...- 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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A reanalysis system for the generation of mesoscale climatographies
The use of a mesoscale model-based four-dimensional data assimilation (FDDA) system for generating mesoscale climatographies is demonstrated. This dynamical downscaling method...- publication PDF
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Variational bias correction of TAMDAR temperature observations in the WRF...
A variational bias correction (VarBC) scheme is developed and tested using regional Weather Research and Forecasting Model Data Assimilation (WRFDA) to correct systematic errors...- publication PDF
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The operational mesogamma-scale analysis and forecast system of the U.S....
This study builds upon previous efforts to document the performance of the U.S. Army Test and Evaluation Command's Four-Dimensional Weather Modeling System using conventional...- publication PDF
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Airborne measurements of organic bromine compounds in the Pacific tropical...
Very short-lived brominated substances (VSLBr) are an important source of stratospheric bromine, an effective ozone destruction catalyst. However, the accurate estimation of the...- publication PDF
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Lessons learned through our climate change professional development program...
The National Center for Atmospheric Research in Boulder, Colorado has been offering professional development on climate change for middle and high school teachers since the...- publication PDF
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A posteriori subgrid-scale model tests based on the conditional means of...
Traditional a posteriori tests of subgrid-scale (SGS) models often compare large eddy simulation (LES) profiles of various statistics with measurements. In this study we propose...- publication PDF
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Impact of soil moisture on winter 2-m temperature forecasts in Northern China
In this study, the causes of the underestimated diurnal 2-m temperature range and the overestimated 2-m specific humidity in the winter of northern China in the Rapid-Refresh...- publication PDF
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The sensitivity of a model projection of near-surface permafrost degradation...
The sensitivity of a global land-surface model projection of near-surface permafrost degradation is assessed with respect to explicit accounting of the thermal and hydrologic...- publication PDF
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Response of orographic precipitation to subsaturated low-level layers
In orographic precipitation events, there are times when subsaturated low-level layers are observed to be below saturated, nearly moist-neutral, upper-level layers. By...- publication PDF
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Alkoxy radical bond scissions explain the anomalously low secondary organic...
Oxidation of monoterpenes (C10H16) by nitrate radicals (NO3) constitutes an important source of atmospheric secondary organic aerosol (SOA) and organonitrates. However,...- publication PDF
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Searching for star-planet interactions in GJ 486 at radio wavelengths with the uGMRT
Aims. We search for radio emission from starâplanet interactions in the M dwarf system GJ 486, which hosts an Earth-like planet. Methods. We observed the GJ...- publication PDF
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Assessment of the interannual variability and influence of the QBO and...
A modified form of tracer-tracer correlations of N2O and O3 has been used as a tool for the evaluation of atmospheric photochemical models. Applying this method, monthly...- publication PDF
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Two corrections for turbulent kinetic energy generated by wind farms in the WRF model
As wind farms grow in number and size worldwide, it is important that their potential impacts on the environment are studied and understood. The Fitch parameterization...- publication PDF
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Silver buckshot or bullet: Is a future "energy mix" necessary?
To displace fossil fuels and achieve the global greenhouse-gas emissions reductions required to meet the Paris Agreement on climate change, the prevalent argument is that a mix...- publication PDF
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A system architecture supporting high-performance and cloud computing in an...
The University of Colorado (CU) and the National Center for Atmospheric Research (NCAR) have been deploying complimentary and federated resources supporting computational...- publication PDF
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Evaluation of Collins WXR-700C-G Radar Performance During the MIST Project,...
This report summarizes comparisons of the Collins WXR-700C-G and the Massachusetts Institute of Technology (MIT) Lincoln Laboratories FL2 Doppler radars. The intent of these...- publication PDF
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A space-time multiscale analysis system: A sequential variational analysis approach
As new observation systems are developed and deployed, new and presumably more precise information is becoming available for weather forecasting and climate monitoring. To take...- publication PDF
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Comparison of ground-based and satellite measurements of water vapour...
Improving measurements of water vapour in the upper troposphere and lower stratosphere (UTLS) is a priority for the atmospheric science community. In this work, UTLS water...- publication PDF
