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Ensemble-based data assimilation
No abstract available.- publication PDF
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Magnetospheric cavity modes driven by solar wind dynamic pressure fluctuations
We present results from Lyon-Fedder-Mobarry (LFM) global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind-magnetosphere interaction. We use these...- publication PDF
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Hurricanes and climate: The U.S. CLIVAR Working Group on Hurricanes
While a quantitative climate theory of tropical cyclone formation remains elusive, considerable progress has been made recently in our ability to simulate tropical cyclone...- publication PDF
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Evolution of ice crystal regions on the microscale based on in situ observations
Microphysical properties of cirrus clouds largely influence their atmospheric radiative forcing. However, uncertainties remain in simulating/parameterizing the evolution of ice...- publication PDF
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The Energy Balance Experiment EBEX-2000. Part II: Inter-comparison of eddy...
The eddy-covariance method is the primary way of measuring turbulent fluxes directly. Many investigators have found that these flux measurements often do not satisfy a...- publication PDF
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Design Life Level: Quantifying risk in a changing climate
In the past, the concepts of return levels and return periods have been standard and important tools for engineering design. However, these concepts are based on the assumption...- publication PDF
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Acidity and the multiphase chemistry of atmospheric aqueous particles and clouds
The acidity of aqueous atmospheric solutions is a key parameter driving both the partitioning of semi-volatile acidic and basic trace gases and their aqueous-phase chemistry. In...- publication PDF
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Global Carbon Budget 2019
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere - the "global carbon budget"...- publication PDF
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A GRACE-based assessment of interannual groundwater dynamics in the...
The estimation of groundwater storage variations is important for quantifying available water resources and managing storage surpluses to alleviate storage deficiencies during...- publication PDF
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Systematic over‐crediting in California's forest carbon offsets program
Carbon offsets are widely used by individuals, corporations, and governments to mitigate their greenhouse gas emissions on the assumption that offsets reflect equivalent climate...- publication PDF
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Whirlwinds and hairpins in the atmospheric surface layer
Vortices in the atmospheric surface layer are characterized using observations at unprecedented resolution from a fixed array of 31 turbulence sensors. During the day, these...- publication PDF
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On the eruption of coronal flux ropes
We present three-dimensional MHD simulations of the evolution of the magnetic field in the corona where the emergence of a twisted magnetic flux tube is driven at the lower...- publication PDF
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Large-scale Rossby normal modes during some recent northern hemisphere winters
Large-scale Rossby normal modes are studied for the Northern Hemisphere winters of 2005, 2006, 2008, and 2009 using global observational meteorological analyses spanning the 0--...- publication PDF
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A Large-Eddy Simulation Study of Water Vapour and Carbon Dioxide Isotopes in...
A large-eddy simulation model developed at the National Center for Atmospheric Research (NCAR) is extended to simulate the transport and diffusion of C¹⁸OO, H₂¹⁸O and ¹³CO₂ in...- publication PDF
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Optimal noise filtering for the ionospheric correction of GPS radio...
GPS radio occultation remote sensing of the neutral atmosphere requires ionospheric correction of L1 and L2 signals. The ionosphere-corrected variables derived from radio...- publication PDF
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International Relations: The UCAR Africa Initiative
This article does not have an abstract or article summary.- publication PDF
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On the prediction of stratospheric balloon trajectories: Improving winds...
Safety compliance issues for operational studies of the atmosphere with balloons require quantifying risks associated with descent and developing strategies to reduce the...- publication PDF
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Electrification of thunderstorms and formation of precipitation
This article does not have an abstract or article summary.- publication PDF
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Empirical relations between size parameters of ice hydrometeor populations...
Empirical power-law relations between the equivalent radar reflectivity factor Z(e) and the slope parameter of the gamma function Lambda (i.e., Lambda = cZ(e)(d); used to...- publication PDF
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The role of surface heat fluxes on the size of Typhoon Megi (2016)
This study attempts to understand how surface heat fluxes in different storm regions affect tropical cyclone (TC) size. The Advanced Research version of the Weather Research and...- publication PDF
