Space Weather Effects in the Earth’s Radiation Belts

Structure and Dynamics of the Electron Radiation Belts: Implications for Space Weather Modeling and Forecasting

Space Weather Effects on Communications

An overview of historical and contemporary impacts of the solar and geospace environments on communications systems. Abstract In the last century and one-half, since the invention and deployment of the first electrical communication system – the electrical telegraph, the variety of communications technologies that can be affected by natural processes occurring on the Sun and in the space enviro...

DREAM: An integrated space radiation nowcast system for natural and nuclear radiation belts

The natural space environment continues to surprise us. We recently witnessed the quietest solar minimum in the past 100 years, casting huge uncertainties on our expectations for approach to Solar Maximum. The overall space environment is made up of many related but independent parts. The Dynamic Radiation Environment Assimilation Model (DREAM) focuses on the spacecraft charging environment. DR...

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Log - normal Kalman filter for assimilating 1 phase - space density data in the radiation belts

Department of Atmospheric and Oceanic Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, U.S.A. Geosciences Department and Laboratoire de Météorologie Dynamique (CNRS and IPSL), Ecole Normale Supérieure, F-75231 Paris Cedex 05, FRANCE. Department of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of Californi...