Results 141 to 150 of about 7,955 (168)
Abstract Understanding the coastal zone of the Antarctic Ice Sheet (AIS), where it interacts with the Southern Ocean and warmer air masses, is crucial for predicting Antarctica's influence on the global climate and sea level. This region has multiple tipping mechanisms that could trigger large, rapid, and potentially irreversible changes in the AIS ...
Kenichi Matsuoka +79 more
wiley +1 more source
Abstract Midlatitude medium‐scale traveling ionospheric disturbances (MSTIDs) are a common source of ionospheric variability that may influence GNSS‐based positioning and can disrupt HF‐communication channels. Here, we present a comprehensive nine‐winter analysis (2014–2023) that establishes a robust connection between stratospheric gravity waves (GWs)
S. Derghazarian +6 more
wiley +1 more source
The Daily Atmospheric Ionospheric Limb Imager (DAILI) CubeSat Experiment
Abstract The Daily Atmospheric Ionospheric Limb Imager (DAILI) (Daily Atmospheric and Ionospheric Limb Imager) mission utilized a 6U CubeSat, deployed at about 410 km altitude in a 51‐degree orbit, to make simultaneous daytime limb measurements in two colors; at 630 nm to measure the OI (630 nm) redline and at 765 nm to measure the O2 ${\mathrm{O}}_{2}$
James H. Hecht +15 more
wiley +1 more source
Abstract This study reconstructs a multistep gravity wave (GW) pathway, from the generation of primary GWs by deep convection in the troposphere to the generation of secondary GWs that drive semi‐concentric medium‐scale traveling ionospheric disturbances (MSTIDs) in the ionosphere, during the record‐breaking heavy rainfall over Kyushu, Japan, in August
Masaru Kogure +7 more
wiley +1 more source
U‐Net Based Machine Learning for Identification of Auroras in Space‐Based Images
Abstract We use a Semantic Segmentation based U‐Net model to predict the appearance of various classifications of aurora present in near‐infrared images from the Fast Auroral Imager (FAI) onboard the CASSIOPE satellite. We manually labeled pixels from a set of 4091 FAI near‐infrared images into 7 different classes: no aurora, contaminated, diffuse ...
Amit Kain +4 more
wiley +1 more source
Abstract The Earth's ionosphere is sensitive to variations in solar irradiance associated with the 11‐year and the 27‐day solar cycles (SCs). Previous studies have suggested that the peak altitude of the 27‐day SC response in ionospheric electron density is significantly higher than that of the 11‐year SC response, but the underlying mechanism remains ...
Shuhui Wang +4 more
wiley +1 more source
Abstract The neutral wind dynamo generates ionospheric currents that can significantly affect high‐latitude electrodynamics during geomagnetic storms, yet its role in global magnetosphere‐ionosphere coupling is often underrepresented. We quantify the impact of wind‐driven currents on geomagnetic disturbances (GMDs) and magnetospheric dynamics during ...
Yu Hong +4 more
wiley +1 more source
Abstract In this study, we investigate the ionospheric and thermospheric responses to the 2018 Mars global dust storm (GDS 2018) by examining atmosphere–ionosphere coupling through tidal structures. Using Mars Atmosphere and Volatile EvolutioN Neutral Gas and Ion Mass Spectrometer observations, we analyze tidal amplitudes, phases, and inter‐species ...
Noritsugu Nagata +5 more
wiley +1 more source

