RO Number
18664
Keyword(s)
Currents, electrodynamics, irregularities, and scintillation; Global assimilative ionospheric model (GAIM); InSAR ionospheic correction; Ionosphere; Ionospheric imaging using GNSS and SAR; Space weather and geomagnetic storms
Citizenship Requirement
U.S. Citizens Accepted; Lawful Permanent Residents Accepted; Foreign Nationals Accepted
Description
Satellite-based navigation systems and remote sensing as well as in situ sensors, such as GNSS, InSAR, and magnetometers, are subject to ionospheric effects. The effects include changes in the power, phase, polarization, and propagation time of the radio signals and ionospheric currents. Global and regional ionospheric disturbances and irregularities in density, TEC, and currents can be caused by space weather events (driven by solar flares and coronal mass ejections) and dynamical processes in the upper atmosphere. Our science objectives are to understand, characterize, image, and predict ionospheric disturbances and irregularities as well as ionospheric scintillation. The research will lead to algorithm, software, model, and system developments to support NASA's and other agencies' missions. We are looking for candidates who are interested in the related research and developments, and willing to work with GNSS data collected from space (including radio occultation) and ground, satellite SAR data, magnetometer data, and other aeronomy remote sensing or in situ data, as well as Global Assimilative Ionospheric Model, ionospheric current and electrodynamical models or/and upper atmospheric models.