DATA ASSIMILATION FOR THE STUDY OF MAGNETOSPHERE-IONOSPHERE-ATMOSPHERE COUPLING
Lead Research Organisation:
University of Bath
Department Name: Electronic and Electrical Engineering
Abstract
State-of-the-art ionospheric imaging techniques use Global Positioning System (GPS) satellite data. In a similar manner to medical imaging, where the patient is examined by X-rays, in ionospheric imaging the upper atmosphere (ionosphere) is examined by radio waves. The next big step for ionospheric imaging is to combine it with models of the ionosphere. The reason to do this is to discover the underlying physics, which we cannot do very well by just looking at the images. We need to link the images to models of winds, solar radiation and electric fields in order to understand what causes the upper atmospheric environment to behave as it does during extreme events called storms. These are not the weather storms we are familiar with but rather these space-weather storms are caused by the bombardment of the outer realms of the atmosphere with particles and radiation from the Sun. The mathematics we need to link the measurements to the models is called data assimilation. Data assimilation has already been strikingly successful in meteorology. The data assimilation to be developed under this grant is for much higher up in the atmosphere (above 100 km) and will be used to investigate the coupling between the neutral and ionized atmosphere and to determine the relationships between ionosphere-atmosphere dynamics and magnetosphere dynamics.
Publications
De Franceschi G
(2008)
Dynamics of high-latitude patches and associated small-scale irregularities during the October and November 2003 storms
in Journal of Atmospheric and Solar-Terrestrial Physics
Dear R
(2007)
Ionospheric imaging at mid-latitudes using both GPS and ionosondes
in Journal of Atmospheric and Solar-Terrestrial Physics
Forte B
(2017)
Identification of scintillation signatures on GPS signals originating from plasma structures detected with EISCAT incoherent scatter radar along the same line of sight
in Journal of Geophysical Research: Space Physics
Forte B
(2013)
Comparison of temporal fluctuations in the total electron content estimates from EISCAT and GPS along the same line of sight
in Annales Geophysicae
Gluyas J
(2018)
Passive, continuous monitoring of carbon dioxide geostorage using muon tomography.
in Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
Hobbs S
(2014)
System Design for Geosynchronous Synthetic Aperture Radar Missions
in IEEE Transactions on Geoscience and Remote Sensing
Katamzi Z
(2012)
Statistical analysis of travelling ionospheric disturbances using TEC observations from geostationary satellites
in Journal of Atmospheric and Solar-Terrestrial Physics
Katamzi Z
(2012)
Analysis of diurnal double maxima observed above Italy during 1975-1991
in Journal of Atmospheric and Solar-Terrestrial Physics
Kinrade J
(2013)
GPS phase scintillation associated with optical auroral emissions: First statistical results from the geographic South Pole AURORAL EMISSIONS AND GPS SCINTILLATION
in Journal of Geophysical Research: Space Physics
Kinrade J
(2012)
Ionospheric scintillation over Antarctica during the storm of 5-6 April 2010 GPS SCINTILLATION OVER ANTARCTICA
in Journal of Geophysical Research: Space Physics
Luca Spogli
(2013)
GPS scintillations and total electron content climatology in the southern low, middle and high latitude regions
in Annals of Geophysics
Materassi M
(2007)
Wavelet analysis of GPS amplitude scintillation: A case study WAVELET ANALYSIS OF GPS SCINTILLATION
in Radio Science
Materassi M
(2009)
Detrend effect on the scalograms of GPS power scintillation
in Advances in Space Research
Meggs R
(2006)
A study into the errors in vertical total electron content mapping using GPS data TOTAL ELECTRON CONTENT MAPPING WITH GPS
in Radio Science
Mitchell C
(2012)
Keynote: Global navigation satellite systems and the ionosphere
Mitchell C
(2007)
Advances in Earth Science - From Earthquakes to Global Warming
Muella M
(2010)
Scintillation-producing Fresnel-scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly SCINTILLATION AND TEC GRADIENTS
in Journal of Geophysical Research: Space Physics
Muella M
(2011)
Tomographic imaging of the equatorial and low-latitude ionosphere over central-eastern Brazil
in Earth, Planets and Space
Panicciari T
(2015)
Using sparse regularization for multi-resolution tomography of the ionosphere
in Nonlinear Processes in Geophysics