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Numerical simulation of "an American haboob"
A dust storm of fearful proportions hit Phoenix in the early evening hours of 5 July 2011. This storm, an American haboob, was predicted hours in advance because numerical,...- publication PDF
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Modeled and observed multidecadal variability in the North Atlantic jet...
Multidecadal variability in the North Atlantic jet stream in general circulation models (GCMs) is compared with that in reanalysis products of the twentieth century. It is found...- publication PDF
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Connecting people and place: A new framework for reducing urban...
Climate change is predicted to increase the intensity and negative impacts of urban heat events, prompting the need to develop preparedness and adaptation strategies that reduce...- publication PDF
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Changes in ozone and precursors during two aged wildfire smoke events in the...
The relative importance of wildfire smoke for air quality over the western US is expected to increase as the climate warms and anthropogenic emissions decline. We report on in...- publication PDF
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Atmospheric moisture transports from ocean to land and global energy flows...
An assessment is made of the global energy and hydrological cycles from eight current atmospheric reanalyses and their depiction of changes over time. A brief evaluation of the...- publication PDF
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Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome...
At the East Antarctic deep ice core drilling site Dome C, daily precipitation measurements were initiated in 2006 and are being continued until today. The amounts and stable...- publication PDF
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Response of surface ultraviolet and visible radiation to stratospheric SO2 injections
Climate modification by stratospheric SO2 injections, to form sulfate aerosols, may alter the spectral and angular distributions of the solar ultraviolet and visible radiation...- publication PDF
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Algorithm for determining the statistical properties of cloud particles...
An algorithm is described for inverting individual particle properties from statistics of ensemble observations, thereby dispelling the notion that coincident particles create...- publication PDF
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Arctic system reanalysis: Call for community involvement
Arctic climate encompasses multiple feedbacks, the most important of which is the ice-albedo feedback. Enhanced Arctic changes, first recognized in the nineteenth century,...- publication PDF
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Trade-offs between three forest ecosystem services across the state of New...
Forests are more frequently being managed to store and sequester carbon for the purposes of climate change mitigation. Generally, this practice involves long-term conservation...- publication PDF
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Evaluations of WRF sensitivities in surface simulations with an ensemble...
This paper investigates the sensitivities of the Weather Research and Forecasting (WRF) model simulations to different parameterization schemes (atmospheric boundary layer,...- publication PDF
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Effects of excess ground ice on projections of permafrost in a warming climate
In permafrost soils, 'excess ice', also referred to as ground ice, exists in amounts exceeding soil porosity in forms such as ice lenses and wedges. Here, we incorporate a...- publication PDF
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An application of principal component analysis to the interpretation of...
Ionospheric currents are driven by several different physical processes and exhibit complex spatial and temporal structure. Magnetic field measurements of ionospheric sources...- publication PDF
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AITuning: Machine learning-based tuning tool for run-time communication libraries
In this work, we address the problem of tuning communication libraries by using a deep reinforcement learning approach. Reinforcement learning is a machine learning technique...- publication PDF
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Description of the NCAR Community Atmosphere Model (CAM 5.0)
This report presents the details of the governing equations, physical parameterizations, and numerical algorithms defining the version of the NCAR Community Atmosphere Model...- publication PDF
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Characterization of high-m ULF wave signatures in GPS TEC data
GPS total electron content (TEC) measurements were used to investigate high-m ultralow frequency (ULF) waves during the recovery phase of a geomagnetic storm. ULF wave signals...- publication PDF
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Influence of surface observations in mesoscale data assimilation using an...
The assimilation of surface observations using an ensemble Kalman filter (EnKF) approach was successfully performed in the Advanced Research version of the Weather Research and...- publication PDF
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The climate impact of COVID-19-induced contrail changes
The COVID-19 pandemic caused significant economic disruption in 2020 and severely impacted air traffic. We use a state-of-the-art Earth system model and ensembles of tightly...- publication PDF
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Stratospheric gravity wave fluxes and scales during DEEPWAVE
During the Deep Propagating Gravity Wave Experiment (DEEPWAVE) project in June and July 2014, the Gulfstream V research aircraft flew 97 legs over the Southern Alps of New...- publication PDF
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Deep-learning-based gridded downscaling of surface meteorological variables...
Many statistical downscaling methods require observational inputs and expert knowledge and thus cannot be generalized well across different regions. Convolutional neural...- publication PDF
