Nick Pedatella | High Altitude Observatory

Impact of strong and weak stratospheric polar vortices on geomagnetic solar and lunar tides

Scatter plot semidiurnal solar (S2) and semidiurnal lunar (L2) geomagnetic tides

Understanding nighttime ionospheric depletions associated with sudden stratospheric warmings in the American sector

Four colorful graphs

The Impact of Assimilating COSMIC-2 Observations of Electron Density in WACCMX

WACCMX+DART analysis

A Lagrangian Study of Tidal Advection of Mesospheric Water Vapor

DW1 advected H2O volume mixing ratio

The photoelectron driven upper hybrid instability as the cause of 150 km echoes

summation of growth rates of the upper hybrid instability for a variety of wavelengths

Scientific Motivations and Future Directions of Whole Atmosphere Modeling

Lower-atmosphere processes in the ionosphere-thermosphere

Lower thermospheric material transport via Lagrangian coherent structures

Left: Specified Dynamics Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (SD-WACCMX) Lagrangian coherent structures (LCSs) for a space shuttle launch during (a) spring and (b) summer. Right: Observations of GUVI Lyman-alpha column emission rates in Rayleighs reprinted from Meier et al. (2011) and annotated with the LCS locations.

The Molecular Oxygen Density Structure of the Lower Thermosphere as Seen by GOLD and Models

Comparisons of local time structure of molecular oxygen at 21°N, 170 km altitude

Impact of Thermospheric Wind Data Assimilation on Ionospheric Electrodynamics using a Coupled Whole Atmosphere Data Assimilation System

Longitude-latitude maps of NmF2 from the NR (first column) and the difference of NmF2 between OSSEs and NR (second to fourth columns) at six different times.

Interhemispheric Coupling Mechanisms in the Middle Atmosphere of WACCM6

Differences in the monthly mean temperature from the long-term average over three WACCM realizations

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