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Assessing RRFS versus HRRR in predicting widespread convective systems over...
This study provides a comparison of the operational HRRR version 4 and its eventual successor, the experimental Rapid Refresh Forecast System (RRFS) model (summer 2022 version),...- publication PDF
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Model predictability of hail precipitation with a moderate hailstorm case....
Hailstones have large damage potential; however, their explicit prediction remains quite challenging. The uncertainty in a model's initial condition and microphysics are two of...- publication PDF
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Critical load exceedances for North America and Europe using an ensemble of...
Exceedances of critical loads for deposition of sulfur (S) and nitrogen (N) in different ecosystems were estimated using European and North American ensembles of air quality...- publication PDF
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Millstone Hill ISR measurements of small aspect angle spectra
The Millstone Hill incoherent scatter (IS) radar is used to measure spectra close to perpendicular to the Earth's magnetic field, and the data are fit to three different forward...- publication PDF
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Anthropogenic forcing of the Northern Annular Mode in CCMVal-2 models
We address the question of how ozone and long-lived greenhouse gas changes impact the Northern Annular Mode (NAM). Using reanalyses and results from the Chemistry-Climate Model...- publication PDF
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Sources of black carbon aerosols in South Asia and surrounding regions...
This study examines differences in the surface black carbon (BC) aerosol loading between the Bay of Bengal (BoB) and the Arabian Sea (AS) and identifies dominant sources of BC...- publication PDF
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Long-lasting extreme magnetic storm activities in 1770 found in historical documents
Dim red aurora at low magnetic latitudes is a visual and recognized manifestation of magnetic storms. The great low-latitude auroral displays seen throughout East Asia on 1770...- publication PDF
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GHOST Balloon Data Volume VII: Balloon 58G
Early Global Horizontal Sounding Technique (GHOST) balloon tests have resulted in valuable upper air wind data, particularly in the data-poor mid-latitudes over southern...- publication PDF
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A Three-demiensional Variational (3DVAR) Data Assimilation System for Use With MM5
This report describes the three-dimensional variational (3DVAR) data assimilation system designed and built in the MMM Division of NCAR for use with the MM5 modeling system....- publication PDF
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Global variation of COSMIC precipitable water over land: Comparisons with...
Radio occultation (RO) observations of precipitable water (PW) from the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) are compared with...- publication PDF
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Pronounced suppression and X-pattern merging of equatorial ionization...
Following the 2022 Tonga Volcano eruption, dramatic suppression and deformation of the equatorial ionization anomaly (EIA) crests occurred in the American sector similar to...- publication PDF
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Ion-neutral coupling effects on low-latitude thermospheric evening winds
We examine the forces that determine zonal wind structure in the low-latitude evening thermosphere and its relation with ion-neutral coupling. These winds drive the evening F...- publication PDF
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Contributions of traffic and industrial emission reductions to the air...
Wuhan was locked down from 23 January to 8 April 2020 to prevent the spread of the novel coronavirus disease 2019 (COVID-19). Both public and private transportation in Wuhan and...- publication PDF
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The impact of future emission policies on tropospheric ozone using a...
This study quantifies future changes in tropospheric ozone (O3) using a simple parameterisation of sourceâreceptor relationships based on simulations from a range of models...- publication PDF
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Understanding and improving model representation of aerosol optical...
KORUS-AQ was an international cooperative air quality field study in South Korea that measured local and remote sources of air pollution affecting the Korean Peninsula during...- publication PDF
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Abrupt termination of the 2012 Pacific warming and its implication on ENSO prediction
In the summer of 2012, there was a clear signal of the developing El Niño over the equatorial Pacific, and many climate models forecasted the occurrence of El Niño with a peak...- publication PDF
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Application of spatial verification methods to idealized and NWP-gridded...
Several spatial forecast verification methods have been developed that are suited for high-resolution precipitation forecasts. They can account for the spatial coherence of...- publication PDF
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Unsteady magnetopause reconnection under quasi-steady solar wind driving
The intrinsic temporal nature of magnetic reconnection at the magnetopause has been an active area of research. Both temporally steady and intermittent reconnection have been...- publication PDF
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Alaskan hydrology in transition: Changing precipitation and...
High spatial and temporal resolution models are essential for understanding future climate impacts and developing effective climate resilience plans. However, existing regional...- publication PDF
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Applicability of condensation particle counters to measure atmospheric clusters
This study presents an evaluation of a pulse height condensation particle counter (PH-CPC) and an expansion condensation particle counter (E-CPC) in terms of measuring ambient...- publication PDF