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Not much helicity is needed to drive large-scale dynamos
Understanding the in situ amplification of large-scale magnetic fields in turbulent astrophysical rotators has been a core subject of dynamo theory. When turbulent velocities...- publication PDF
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Geospace Environment Modeling 2008-2009 challenge: Geosynchronous magnetic field
In this paper the metrics-based results of the inner magnetospheric magnetic field part of the 2008-2009 GEM Metrics Challenge are reported. The Metrics Challenge asked modelers...- publication PDF
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Solar physics from unconventional viewpoints
We explore new opportunities for solar physics that could be realized by future missions providing sustained observations from vantage points away from the Sun-Earth line. These...- publication PDF
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WUDAPT: An urban weather, climate, and environmental modeling infrastructure...
The World Urban Database and Access Portal Tools (WUDAPT) is an international community-based initiative to acquire and disseminate climate relevant data on the physical...- publication PDF
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NOx Lifetime and NOy Partitioning During WINTER
Although urban NOx lifetimes have been examined extensively during summertime conditions, wintertime NOx chemistry has been comparatively less studied. We use measurements of...- publication PDF
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Flux-transport solar dynamos
Large-scale solar dynamo models were first built by Parker (1955). Over the past half a century these models have evolved significantly. We discuss here the development of a...- publication PDF
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The role of sulfur dioxide in stratospheric aerosol formation evaluated by...
Stratospheric aerosols (SAs) are a variable component of the Earth's albedo that may be intentionally enhanced in the future to offset greenhouse gases (geoengineering). The...- publication PDF
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The role of the stratosphere in subseasonal to seasonal prediction: 1....
The stratosphere has been identified as an important source of predictability for a range of processes on subseasonal to seasonal (S2S) time scales. Knowledge about S2S...- publication PDF
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Design strategies of an hourly update 3DVAR data assimilation system for...
This study examines two strategies for improving the analysis of an hourly update three-dimensional variational data assimilation (3DVAR) system and the subsequent quantitative...- publication PDF
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Trigonal ice crystals in Earth's atmosphere
We are all familiar with the hexagonal shape of snow and ice crystals, and it is well established that their sixfold symmetry is derived from the arrangement of water molecules...- publication PDF
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Evaluation of the use of a commercially available cavity ringdown absorption...
Real time, atmospheric NO2 column profiles over the Mid-Atlantic states, during the July 2011 National Aeronautics and Space Administration (NASA) Deriving Information on...- publication PDF
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Thermohaline Circulation Variability in the NCAR Climate System Model (CSM)
This article does not have an abstract or article summary.- publication PDF
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Fast and slow shifts of the zonal-mean intertropical convergence zone in...
Previous modeling work showed that aerosol can affect the position of the tropical rain belt, i.e., the intertropical convergence zone (ITCZ). Yet it remains unclear which...- publication PDF
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Global estimates of water-vapor-weighted mean temperature of the atmosphere...
Water-vapor-weighted atmospheric mean temperature, Tm, is a key parameter in the retrieval of atmospheric precipitable water (PW) from ground-based Global Positioning System...- publication PDF
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Precipitation variability increases in a warmer climate
Understanding changes in precipitation variability is essential for a complete explanation of the hydrologic cycle's response to warming and its impacts. While changes in mean...- publication PDF
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Observations and Simulations of Eddy Diffusion and Tidal Effects on the...
We use the National Center for Atmospheric Research TIEGCM (Thermosphere Ionosphere Electrodynamics General Circulation Model) model to investigate the eddy diffusion and tidal...- publication PDF
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Antarctic ice-sheet meltwater reduces transient warming and climate...
Coupled global climate models (GCMs) generally fail to reproduce the observed sea-surface temperature (SST) trend pattern since the 1980s. The model-observation discrepancies...- publication PDF
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Energy transfer during intense geomagnetic storms driven by interplanetary...
The interaction of the solar wind and Earth's magnetosphere is complex, and the phenomenology of the interaction is very different for interplanetary coronal mass ejections...- publication PDF
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The relation between dayside local Poynting flux enhancement and cusp reconnection
The Defense Meteorological Satellite Program (DMSP) F15 satellite frequently observes an unusually high level of local Poynting flux when the interplanetary magnetic field (IMF)...- publication PDF
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What drives the spread and bias in the surface impact of sudden...
This study evaluates the representation of the composite-mean surface response to sudden stratospheric warmings (SSWs) in 28 CMIP6 models. Most models can reproduce the...- publication PDF
