-
GOLD observations of thermospheric neutral temperature variability during...
The 14 October 2023 annular solar eclipse was visible from the US Pacific coast to Brazil's east coast. NASA's Global‐scale Observations of Limb and Disk (GOLD) mission...- publication PDF
-
Upper-atmosphere responses to the 2022 Hunga Tonga–Hunga Ha′apai volcanic...
A multi-group of strong atmospheric waves (wave packet nos. 1-5) over China associated with the 2022 Hunga Tonga-Hunga Ha ' apai (HTHH) volcano eruptions were observed in the...- publication PDF
-
Influence of stratosphere polar vortex variability on the mesosphere,...
The Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (WACCM-X) is used to investigate the influence of stratosphere polar vortex variability on...- publication PDF
-
Validation of AIRS v4 ozone profiles in the UTLS using ozonesondes from...
Ozonesonde observations from Lauder (45.0°S, 169.7°E) and Boulder (39.9°N, 105.3°W) are used to examine the quality of the Atmospheric Infrared Sounder (AIRS) v4 vertical ozone...- publication PDF
-
CHROMIS Modulator Engineering Analysis, Design, Assembly, and Testing
The CHROMIS Fabry-Perot tunable filter at the 1-m Swedish Solar Telescope (Goran B. Scharmer et al. 2003) has great potential to study the chromosphere using spectro-...- publication PDF
-
Wildfire particulate matter in Europe during summer 2003: Meso-scale...
The present study investigates effects of wildfire emissions on air quality in Europe during an intense fire season that occurred in summer 2003. A meso-scale chemistry...- publication PDF
-
Injection strategy - a driver of atmospheric circulation and ozone response...
Despite offsetting global mean surface temperature, various studies demonstrated that stratospheric aerosol injection (SAI) could influence the recovery of stratospheric ozone...- publication PDF
-
The role of fuel characteristics and heat release formulations in coupled...
In this study, we focus on the effects of fuel bed representation and fire heat and smoke distribution in a coupled fire-atmosphere simulation platform for two landscape-scale...- publication PDF
-
Simulating precipitation efficiency across the deep convective gray zone
Precipitation efficiency (PE) relates cloud condensation to precipitation and thus reflects how much of the total atmospheric condensate reaches the surface as precipitation....- publication PDF
-
Misuse of landfall as a proxy for Atlantic tropical cyclone activity
Recent studies [Solow and Moore, 2000; Landsea, 2007] have used an assumed constant ratio of landfalling cyclones to all tropical cyclones in the basin to assess potential...- publication PDF
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
