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Adaptively implicit MPDATA advection for arbitrary Courant numbers and meshes
Advection schemes with time step restrictions are widely used in weather and climate models. This can lead to instability in the presence of high flow speeds (relative to mesh...- publication PDF
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Changes in stratospheric transport and mixing during sudden stratospheric warmings
The extreme disruptions of the wintertime stratospheric circulation during sudden stratospheric warmings (SSW) have large effects on tracer concentrations through alterations in...- publication PDF
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Modeling canopy-induced turbulence in the Earth system: A unified...
Land surface models used in climate models neglect the roughness sublayer and parameterize within-canopy turbulence in an ad hoc manner. We implemented a roughness sublayer...- publication PDF
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Environmental effects of stratospheric ozone depletion, UV radiation, and...
This assessment by the Environmental Effects Assessment Panel (EEAP) of the United Nations Environment Programme (UNEP) provides the latest scientific update since our most...- publication PDF
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Liquid phase cloud microphysical property estimates from CALIPSO measurements
A neural-network algorithm that uses CALIPSO lidar measurements to infer droplet effective radius, extinction coefficient, liquid-water content, and droplet number concentration...- publication PDF
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Emissions from forest fires near Mexico City
The emissions of NOx (defined as NO (nitric oxide) + NO2 (nitrogen dioxide)) and hydrogen cyanide (HCN), per unit amount of fuel burned, from fires in the pine forests that...- publication PDF
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Considerations on UAS-based in situ weather sensing in winter precipitation...
Freezing rain and freezing drizzle can produce nearly undetectable hazards, with potentially catastrophic consequences for aircraft within low altitudes (e.g., the terminal...- publication PDF
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Causes of low thermospheric density during the 2007-2009 solar minimum
Satellite drag data indicate that the thermosphere was lower in density, and therefore cooler, during the protracted solar minimum period of 2007-2009 than at any other time in...- publication PDF
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Three decades of global methane sources and sinks
Methane is an important greenhouse gas, responsible for about 20% of the warming induced by long-lived greenhouse gases since pre-industrial times. By reacting with hydroxyl...- publication PDF
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The CESM2 single-forcing large ensemble and comparison to CESM1:...
Single-forcing large ensembles are a relatively new tool for quantifying the contributions of different an-thropogenic and natural forcings to the historical and future...- publication PDF
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Decadal relationship between Arctic SAT and AMOC changes modulated by the...
The faster warming for Arctic Ocean surface air temperature (SAT) relative to that at lower latitude is connected with various processes, including local radiation feedback,...- publication PDF
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Nocturnal convection initiation during PECAN 2015
Nocturnal convection initiation (NCI) is more difficult to anticipate and forecast than daytime convection initiation (CI). A major component of the Plains Elevated Convection...- publication PDF
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The product and system specificities of measuring curation impact
Using three datasets archived at the National Center for Atmospheric Research (NCAR), we describe the creation of a 'data usage index' for curation-specific impact assessments....- publication PDF
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Effects of horizontal and vertical grid spacing on mixing in simulated...
The sensitivity of an idealized squall line to horizontal Δh and vertical Δv grid spacing is investigated using a new approach. Simulations are first performed at a horizontal...- publication PDF
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Tropical precipitation woes in the Community Earth System Model version 2
The newly developed paleo-climate calibrated Community Earth System Model, version 2 (pCESM2) simulates a more realistic global temperature response to external forcing compared...- publication PDF
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Identification of major moisture sources across the Mediterranean Basin
We employ a Lagrangian based moisture back trajectory method on an ensemble of four reanalysis datasets to provide a comprehensive understanding of moisture sources over the...- publication PDF
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A new characterization within the spatial verification framework for false...
This paper proposes new diagnostic plots that take advantage of the lack of symmetry in the mean-error distance measure (MED) for binary images to yield a new concept of false...- publication PDF
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How waviness in the circulation changes surface ozone: A viewpoint using...
Local finite-amplitude wave activity (LWA) measures the waviness of the local flow. In this work we relate the anticyclonic part of LWA, AWA (anticyclonic wave activity), to...- publication PDF
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Broadening of cloud droplet spectra through eddy hopping: Turbulent...
This paper discusses the effects of cloud turbulence, turbulent entrainment, and entrained cloud condensation nuclei (CCN) activation on the evolution of the cloud droplet size...- publication PDF
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Atmospheric tides in the latest generation of climate models
For atmospheric tides driven by solar heating, the database of climate model output used in the most recent assessment report of the Intergovernmental Panel on Climate Change...- publication PDF
