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Impact of mixing and chemical change on ozone-tracer relations in the polar vortex
Tracer-tracer relations have been used for a long time to separate physico-chemical change from change caused by transport processes. In particular, for more than a decade,...- publication PDF
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An improved representation of rimed snow and conversion to graupel in a...
This paper describes the development of a new multicomponent detailed bin ice microphysics scheme that predicts the number concentration of ice as well as the rime mass mixing...- publication PDF
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The origin of nonlinear signatures of planetary wave dynamics: Mean phase...
Mean phase space tendencies are investigated to systematically identify the origin of nonlinear signatures and the dynamical significance of small deviations from Gaussianity of...- publication PDF
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Numerical calculations of adiabatic invariants from MHD-driven magnetic fields
The adiabatic invariants (M, J, Phi) and the related invariants (M, K, L*) have been established as effective coordinate systems for describing radiation belt dynamics at a...- 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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Total lightning activity as an indicator of updraft characteristics
This study investigates the relationship of total lightning activity and updraft characteristics, such as updraft volume and maximum updraft speed, for a number of storms of...- publication PDF
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Tropical Atlantic biases in CCSM4
This paper focuses on diagnosing biases in the seasonal climate of the tropical Atlantic in the twentieth-century simulation of the Community Climate System Model, version 4...- publication PDF
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Two overlooked biases of the Advanced Research WRF (ARW) Model in...
The authors have discovered two sizeable biases in the Weather Research and Forecasting (WRF) model: a negative bias in geopotential and a warm bias in temperature, appearing...- publication PDF
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NCAR Software Catalog
An extensive collection of library software is available for use on the Scientific Computing Division (SCD) computers at NCAR, and is cataloged in this document. The NCAR...- publication PDF
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Response of winter fine particulate matter concentrations to emission and...
The winter haze is a growing problem in North China, but the causes are not well understood. The chemistry version of the Weather Research and Forecasting model (WRF-Chem) was...- publication PDF
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Two-layer stratified flow past a valley
Observations and models of nocturnal katabatic winds indicate strong low-level stability with much weaker stability aloft. When such winds encounter an embedded depression in an...- publication PDF
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Optimizing the isoprene emission model MEGAN with satellite and ground-based...
Isoprene is a hydrocarbon emitted in large quantities by terrestrial vegetation. It is a precursor to several air quality and climate pollutants including ozone. Emission rates...- publication PDF
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Intraseasonal to interannual variability of Kelvin wave momentum fluxes as...
Observational estimates of Kelvin wave momentum fluxes in the tropical lower stratosphere remain challenging. Here we extend a method based on linear wave theory to estimate...- publication PDF
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Understanding AMOC stability: The North Atlantic Hosing Model Intercomparison Project
The Atlantic meridional overturning circulation (AMOC) is an important part of our climate system. The AMOC is predicted to weaken under climate change; however, theories...- publication PDF
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Contrasting central equatorial Pacific oxygen isotopic signatures of the...
Paleoclimate reconstructions of El Nino/Southern Oscillation (ENSO) behavior often rely on oxygen isotopic records from tropical corals (delta 18O). However, few reef-based...- publication PDF
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Contributions of the liquid and ice phases to global surface precipitation:...
This study is the first to reach a global view of the precipitation process partitioning, using a combination of satellite and global climate modeling data. The pathways...- publication PDF
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Torsional oscillations in a global solar dynamo
We characterize and analyze rotational torsional oscillations developing in a large-eddy magnetohydrodynamical simulation of solar convection (Ghizaru, Charbonneau, and...- publication PDF
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Climate change projections for the twenty-first century and climate change...
Climate change scenario simulations with the Community Climate System Model version 3 (CCSM3), a global coupled climate model, show that if concentrations of all greenhouse...- publication PDF
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Solar influences on climate
Understanding the influence of solar variability on the Earth's climate requires knowledge of solar variability, solar-terrestrial interactions, and the mechanisms determining...- publication PDF
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Fundamental properties of five Kepler stars using global asteroseismic...
We present an asteroseismic study of the solar-like stars KIC 11395018, KIC 10273246, KIC 10920273, KIC 10339342, and KIC 11234888 using short-cadence time series of more than...- publication PDF