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Constraining non-linear dynamo models using quasi-biennial oscillations from...
Solar magnetic activity exhibits variations with periods between 1.5 and 4 years, the so-called quasi-biennial oscillations (QBOs), in addition to the well-known 11-year Schwabe...- publication PDF
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A quantile-conserving ensemble filter framework. Part I: Updating an...
A general framework for deterministic univariate ensemble filtering is presented. The framework fits a continuous prior probability density function (PDF) to the prior ensemble....- publication PDF
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CESM1(WACCM) stratospheric aerosol geoengineering large ensemble project
This paper describes the Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) project, which promotes the use of a unique model dataset, performed with the Community...- publication PDF
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Long-term changes in lower tropospheric baseline ozone concentrations:...
Two recent papers have quantified long-term ozone (O₃) changes observed at northern midlatitude sites that are believed to represent baseline (here understood as representative...- publication PDF
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Climate variability and conflict risk in East Africa, 1990–2009
Recent studies concerning the possible relationship between climate trends and the risks of violent conflict have yielded contradictory results, partly because of choices of...- publication PDF
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Triple-frequency radar retrieval of microphysical properties of snow
An algorithm based on triple-frequency (X, Ka, W) radar measurements that retrieves the size, water content and degree of riming of ice clouds is presented. This study exploits...- publication PDF
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Revisiting the causal connection between the Great Salinity Anomaly of the...
The Great Salinity Anomaly (GSA) of the 1970s is the most pronounced decadal-scale low-salinity event observed in the subpolar North Atlantic (SPNA). Using various simulations...- publication PDF
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A new hybrid sigma-pressure vertical coordinate with smoothed coordinate surfaces
An alternative hybrid sigma-pressure terrain-following coordinate is presented here that provides smoother coordinate surfaces over terrain by allowing a more rapid decay of the...- publication PDF
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Compensating errors in inversions for subglacial bed roughness: Same steady...
Subglacial bed roughness is one of the main factors controlling the rate of future Antarctic ice-sheet retreat and also one of the most uncertain. A common technique to...- publication PDF
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Occurrence of lower cloud albedo in ship tracks
The concept of geoengineering by marine cloud brightening is based on seeding marine stratocumulus clouds with sub-micrometer sea-salt particles to enhance the cloud droplet...- publication PDF
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A climatology of elevated stratopause events in the whole atmosphere...
Elevated stratopause (ES) events occurring during Northern Hemisphere winter are identified in four climate simulations of the period 1953–2005 made with the Whole Atmosphere...- publication PDF
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An analysis of the momentum forcing in the high-latitude lower thermosphere
We analyze the dynamics of the high-latitude thermsopheric wind system below 170 km for negative IMF B z by using a fully nonlinear model with a realistic distribution of the...- publication PDF
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Airborne polarimetric Doppler weather radar: Trade-offs between various...
NCAR EOL is investigating potential configurations for the next-generation airborne phased array radar (APAR) that is capable of retrieving dynamic and microphysical...- publication PDF
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Aerosol impacts on warm-cloud microphysics and drizzle in a moderately...
Climate is critically affected by aerosols, which alter cloud lifecycles and precipitation distribution through radiative and microphysical effects. In this study, aerosol and...- publication PDF
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Evaluation of HY-2A scatterometer wind vectors using data from buoys,...
The first Chinese operational Ku-band scatterometer on board Haiyang-2A (HY-2A), launched in August 2011, is designed for monitoring the global ocean surface wind. This study...- publication PDF
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Theoretical study of the ionospheric plasma cave in the equatorial...
This paper investigates the physical mechanism of an unusual equatorial electron density structure, plasma cave, located underneath the equatorial ionization anomaly by using...- publication PDF
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Evaluation of the new CNDV option of the Community Land Model: Effects of...
The Community Land Model, version 4 (CLM4) includes the option to run the prognostic carbon-nitrogen (CN) model with dynamic vegetation (CNDV). CNDV, which simulates unmanaged...- publication PDF
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Comparisons of empirical localization techniques for serial ensemble Kalman...
Two techniques for estimating good localization functions for serial ensemble Kalman filters are compared in observing system simulation experiments (OSSEs) conducted with the...- publication PDF
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Feature-based validation of the Lyon-Fedder-Mobarry magnetohydrodynamical model
Field-aligned currents (FACs) play an important role in the coupling between the ionosphere and magnetosphere. Numerical simulation of these phenomena is of increasing interest,...- 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
