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
Dear R
(2006)
GPS interfrequency biases and total electron content errors in ionospheric imaging over Europe
in Radio Science
Yin P
(2006)
Observations of the F region height redistribution in the storm-time ionosphere over Europe and the USA using GPS imaging
in Geophysical Research Letters
Zapfe B
(2006)
Imaging of the equatorial ionospheric anomaly over South America-A simulation study of total electron content
in Journal of Atmospheric and Solar-Terrestrial Physics
Meggs R
(2006)
A study into the errors in vertical total electron content mapping using GPS data
in Radio Science
Materassi M
(2007)
Wavelet analysis of GPS amplitude scintillation: A case study
in Radio Science
Dear R
(2007)
Ionospheric imaging at mid-latitudes using both GPS and ionosondes
in Journal of Atmospheric and Solar-Terrestrial Physics
Mitchell C
(2007)
Advances in Earth Science - From Earthquakes to Global Warming
Bust G
(2007)
Four-dimensional GPS imaging of space weather storms
in Space Weather
Allain D
(2008)
Ionospheric delay corrections for single-frequency GPS receivers over Europe using tomographic mapping
in GPS Solutions
Smith A
(2008)
GPS scintillation in the high arctic associated with an auroral arc
in Space Weather
Alfonsi L
(2008)
Probing the high latitude ionosphere from ground-based observations: The state of current knowledge and capabilities during IPY (2007-2009)
in Journal of Atmospheric and Solar-Terrestrial Physics
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
Bust G
(2008)
History, current state, and future directions of ionospheric imaging
in Reviews of Geophysics
Pokhotelov D
(2008)
Ionospheric storm time dynamics as seen by GPS tomography and in situ spacecraft observations
in Journal of Geophysical Research: Space Physics
Soleimani M
(2009)
FOUR-DIMENSIONAL ELECTRICAL CAPACITANCE TOMOGRAPHY IMAGING USING EXPERIMENTAL DATA
in Progress In Electromagnetics Research
Alfonsi L
(2009)
Corrigendum to: "Probing the high latitude ionosphere from ground-based observations: The state of current knowledge and capabilities during IPY (2007-2009)"
in Journal of Atmospheric and Solar-Terrestrial Physics
Soleimani M
(2009)
Medical imaging and physiological modelling: linking physics and biology.
in Biomedical engineering online
Yin P
(2009)
Imaging of the Antarctic ionosphere: Experimental results
in Journal of Atmospheric and Solar-Terrestrial Physics
Materassi M
(2009)
Detrend effect on the scalograms of GPS power scintillation
in Advances in Space Research
Smith N
(2009)
Image-model coupling: a simple information theoretic perspective for image sequences
in Nonlinear Processes in Geophysics
Pokhotelov D
(2009)
Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002
in Journal of Geophysical Research: Space Physics
Burston R
(2009)
Correlation between scintillation indices and gradient drift wave amplitudes in the northern polar ionosphere
in Journal of Geophysical Research: Space Physics
Pokhotelov D
(2010)
GPS tomography in the polar cap: comparison with ionosondes and in situ spacecraft data
in GPS Solutions
Pokhotelov D
(2010)
High-latitude ionospheric response to co-rotating interaction region- and coronal mass ejection-driven geomagnetic storms revealed by GPS tomography and ionosondes
in Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Pengpan T
(2010)
A dual modality of cone beam CT and electrical impedance tomography for lung imaging
in Journal of Physics: Conference Series
Qiu W
(2010)
New iterative cone beam CT reconstruction software: parameter optimisation and convergence study.
in Computer methods and programs in biomedicine
Muella M
(2010)
Scintillation-producing Fresnel-scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly
in Journal of Geophysical Research: Space Physics
Smith N
(2010)
Image-model coupling: application to an ionospheric storm
in Nonlinear Processes in Geophysics
Burston R
(2010)
Turbulent times in the northern polar ionosphere?
in Journal of Geophysical Research: Space Physics
Benton C
(2011)
Isolating the multipath component in GNSS signal-to-noise data and locating reflecting objects
in Radio Science
Alfonsi L
(2011)
GPS scintillation and TEC gradients at equatorial latitudes in April 2006
in Advances in Space Research
Prikryl P
(2011)
Interhemispheric comparison of GPS phase scintillation at high latitudes during the magnetic-cloud-induced geomagnetic storm of 5-7 April 2010
in Annales Geophysicae
Spencer P
(2011)
Imaging of 3-D plasmaspheric electron density using GPS to LEO satellite differential phase observations
in Radio Science
Rose J
(2011)
The use of ionospheric tomography and elevation masks to reduce the overall error in single-frequency GPS timing applications
in Advances in Space Research
Alfonsi L
(2011)
Bipolar climatology of GPS ionospheric scintillation at solar minimum
in Radio Science
Muella M
(2011)
Tomographic imaging of the equatorial and low-latitude ionosphere over central-eastern Brazil
in Earth, Planets and Space
Yin P
(2011)
Demonstration of the use of the Doppler Orbitography and Radio positioning Integrated by Satellite (DORIS) measurements to validate GPS ionospheric imaging
in Advances in Space Research
Pengpan T
(2011)
A motion-compensated cone-beam CT using electrical impedance tomography imaging.
in Physiological measurement
Katamzi Z
(2012)
Analysis of diurnal double maxima observed above Italy during 1975-1991
in Journal of Atmospheric and Solar-Terrestrial Physics
Chartier A
(2012)
The use of ionosondes in GPS ionospheric tomography at low latitudes
in Journal of Geophysical Research: Space Physics
Smith N
(2012)
Towards adapting a normal patient database for SPECT brain perfusion imaging
in Inverse Problems
Adewale A
(2012)
A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria
in Radio Science
Katamzi Z
(2012)
Statistical analysis of travelling ionospheric disturbances using TEC observations from geostationary satellites
in Journal of Atmospheric and Solar-Terrestrial Physics
Chartier A
(2012)
A 12year comparison of MIDAS and IRI 2007 ionospheric Total Electron Content
in Advances in Space Research
Benton C
(2012)
New method for tracking the movement of ionospheric plasma
in Journal of Geophysical Research: Space Physics
Kinrade J
(2012)
Ionospheric scintillation over Antarctica during the storm of 5-6 April 2010
in Journal of Geophysical Research: Space Physics
Mitchell C
(2012)
Keynote: Global navigation satellite systems and the ionosphere