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Evaluating model performance of an ensemble-based chemical data assimilation...
We present a global chemical data assimilation system using a global atmosphere model, the Community Atmosphere Model (CAM3) with simplified chemistry and the Data Assimilation...- publication PDF
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Differential rotation in main-sequence solar-like stars: Qualitative...
Understanding differential rotation of Sun-like stars is of great importance for insight into the angular momentum transport in these stars. One means of gaining such...- publication PDF
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Assimilation of GNSS zenith total delay in NAVGEM
A new data source from ground-based stations that track global navigation satellite system (GNSS) transmitters has been implemented in the Navy Global Environmental Model...- publication PDF
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Generalized Aerosol/Chemistry Interface (GIANT): A community effort to...
Atmospheric aerosol and chemistry modules are key elements in Earth system models (ESMs), as they predict air pollutant concentrations and properties that can impact human...- publication PDF
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Improving ensemble data assimilation through Probit-space Ensemble Size...
Small forecast ensemble sizes (< 100) are common in the ensemble data assimilation (EnsDA) component of geophysical forecast systems, thus limiting the error-constraining...- publication PDF
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A near-global, 2-hourly data set of atmospheric precipitable water from...
A 2-hourly data set of atmospheric precipitable water (PW) has been produced from the zenith path delay (ZPD) derived from ground-based Global Positioning System (GPS)...- publication PDF
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Can we do better at teaching mathematics to undergraduate atmospheric...
At the 2019 annual Members Meeting of UCAR, an informal survey was made during a well-attended breakout session organized by the UCAR COMET program. The following polling...- publication PDF
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Identifying the magnetospheric drivers of giant undulations: Global modeling...
We present the first global geospace simulation to reproduce auroral giant undulations (GUs). To identify their magnetospheric drivers, we employ the MAGE (Multiscale...- publication PDF
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Atmospheric Rivers are responsible for cyclicity in Sierra Nevada precipitation
Cool-season (November-March) precipitation contributes critically to California's water resources and flood risk. In the Sierra Nevada, approximately half of cool-season...- publication PDF
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Raman shifter optimized for lidar at 1.5 μm wavelength
A Raman shifter is optimized for generating high-energy laser pulses at a 1.54 μm wavelength. A forward-scattering design is described, including details of the multiple pass...- publication PDF
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From the surface to the stratosphere: Large‐scale atmospheric response to...
The ocean response to Antarctic Ice Sheet (AIS) mass loss has been extensively studied using numerical models, but less attention has been given to the atmosphere. We examine...- publication PDF
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Importance of internal variability for climate model assessment
Benchmarking climate model simulations against observations of the climate is core to the process of building realistic climate models and developing accurate future...- publication PDF
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STREAM‐Sat: A novel near‐realtime quasi‐global satellite‐only ensemble...
Satellite‐based precipitation observations can provide near‐global coverage with high spatiotemporal resolution in near‐realtime. Their utility, however, is...- publication PDF
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Magnetohydrodynamic turbulence simulations as a testing ground for PUNCH
The Polarimeter to UNify the Corona and Heliosphere (PUNCH) will image macroscopic features of the inner heliosphere and also admit sufficiently high spatial resolution to probe...- publication PDF
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Last glacial maximum ocean thermohaline circulation: PMIP2 model...
The ocean thermohaline circulation is important for transports of heat and the carbon cycle. We present results from PMIP2 coupled atmosphere-ocean simulations with four climate...- 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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Plant physiological and environmental controls over the exchange of...
We quantified fine scale sources and sinks of gas phase acetaldehyde in two forested ecosystems in the US. During the daytime, the upper canopy behaved as a net source while at...- publication PDF
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A new method for diagnosing effective radiative forcing from aerosol-cloud...
Aerosol–cloud interactions (ACIs) are a leading source of uncertainty in estimates of the historical effective radiative forcing (ERF). One reason for this uncertainty is the...- publication PDF
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Urban ozone formation and sensitivities to volatile chemical products,...
Volatile chemical products (VCPs) and other non-traditional anthropogenic sources, such as cooking, contribute substantially to the volatile organic compound (VOC) budget in...- publication PDF
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The formation mechanism of merged EIA during a storm on 4 November 2021
In this study, we conduct an in‐depth analysis of Whole Atmosphere Community Climate Model‐eXtended simulations to examine physical mechanisms of the formation and...- publication PDF
