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Seasonality and variability of snowfall to total precipitation ratio over...
The ratio of snowfall to total precipitation (S/P ratio) is an important metric that is widely used to detect and monitor hydrologic responses to climate change over mountainous...- publication PDF
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G6-1.5K-SAI: A new Geoengineering Model Intercomparison Project (GeoMIP)...
The Geoengineering Model Intercomparison Project (GeoMIP) has proposed multiple model experiments during phases 5 and 6 of the Climate Model Intercomparison Project (CMIP), with...- publication PDF
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The NCAR GKS-compatible Graphics System
This document offers a brief overview of the NCAR GKS-compatible Graphics Package. It describes the package contents (code and documentation) and how to use it. GKS formalizes...- publication PDF
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The Ice Particle and Aggregate Simulator (IPAS). Part I: Extracting...
Aggregation, the process by which two or more ice particles attach to each other, is typically observed in clouds that span a range of temperatures and is influenced by the...- publication PDF
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Earth's atmosphere protects the biosphere from nearby supernovae
Geological evidence indicates that a supernova within 100 parsecs of Earth occurs around once per million years. Such nearby supernovas can produce an intense gamma-ray burst...- publication PDF
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The representation of Convectively Coupled Kelvin Waves in simulations with...
Convectively coupled Kelvin waves (CCKWs) are important drivers of tropical weather and may influence extreme rainfall and tropical cyclone formation. However, directly...- publication PDF
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Simulation of energetic particle precipitation effects during the 2003-2004...
Energetic particle precipitation (EPP) during the 2003-2004 Arctic winter led to the production and subsequent transport of reactive odd nitrogen (NOxâ=âNOâ+âNOâ) from...- publication PDF
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Assimilation of GNSS PWV with NCAR-RTFDDA to improve prediction of a landfall typhoon
Precipitable water vapor (PWV) retrieved from ground-based global navigation satellite system (GNSS) stations acquisition signal of a navigation satellite system provides high...- publication PDF
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WACCM-D Whole Atmosphere Community Climate Model with D-region ion chemistry
Energetic particle precipitation (EPP) and ion chemistry affect the neutral composition of the polar middle atmosphere. For example, production of odd nitrogen and odd hydrogen...- publication PDF
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The atmospheric response to three decades of observed Arctic sea ice loss
Arctic sea ice is declining at an increasing rate with potentially important repercussions. To understand better the atmospheric changes that may have occurred in response to...- publication PDF
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Consensus and disagreement in atmospheric river detection: ARTMIP global catalogues
Atmospheric rivers (ARs) constitute an important mechanism for water vapor transport, but research on their characteristics and impacts has relied on a diverse assortment of...- publication PDF
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Multi-model mean nitrogen and sulfur deposition from the Atmospheric...
We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry and Climate Model...- publication PDF
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Impact of the lower atmosphere on the ionosphere response to a geomagnetic superstorm
Numerical simulations in the National Center for Atmospheric Research (NCAR) thermosphere-ionosphere-electrodynamics general circulation model (TIE-GCM) are performed to...- publication PDF
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Observed Long-period Fluctuations in 500-mb Heights -- Supplementary Text to...
This text is intended to be used as an aid for the two motion picture films produced, using the computer facilities at the National Center for Atmospheric Research, to show the...- publication PDF
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Mechanisms for a record-breaking rainfall in the coastal metropolitan city...
Record-breaking rainfall of 524.1mm in 24hr occurred in the coastal metropolitan city of Guangzhou, China, during 6-7 May 2017 and caused devastating flooding. Observation...- publication PDF
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Terrestrial contribution to the heterogeneity in hydrological changes under...
This study investigates a physical basis for heterogeneity in hydrological changes, which suggests a greater detectability in wet than dry regions. Wet regions are those where...- publication PDF
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Ionospheric response to CIR-induced recurrent geomagnetic activity during...
This paper presents an epoch analysis of global ionosphere responses to recurrent geomagnetic activity during 79 corotating interaction region (CIR) events from 2004 to 2009....- publication PDF
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The isotopic record of Northern Hemisphere atmospheric carbon monoxide since...
We present a 60-year record of the stable isotopes of atmospheric carbon monoxide (CO) from firn air samples collected under the framework of the North Greenland Eemian Ice...- publication PDF
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Ground delays from lightning ramp closures and decision uncertainties
Analyses are presented that provide a first quantitative look at the impacts of lightning-related ramp closures on departing and arriving air traffic. Ramp closures are a...- publication PDF
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Observations of precipitation size and fall speed characteristics within...
Ground-based measurements of particle size and fall speed distributions using a Particle Size and Velocity (PARSIVEL) disdrometer are compared among samples obtained in mixed...- publication PDF
