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.
Organisations
Publications
Paul Prikryl
(2013)
An interhemispheric comparison of GPS phase scintillation with auroral emission observed at the South Pole and from the DMSP satellite
in Annals of Geophysics
Pengpan T
(2010)
A dual modality of cone beam CT and electrical impedance tomography for lung imaging
in Journal of Physics: Conference Series
Pengpan T
(2011)
A motion-compensated cone-beam CT using electrical impedance tomography imaging.
in Physiological measurement
Pokhotelov D
(2008)
Ionospheric storm time dynamics as seen by GPS tomography and in situ spacecraft observations
in Journal of Geophysical Research: Space Physics
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
Pokhotelov D
(2009)
Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002
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
Prikryl P
(2015)
GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: Interhemispheric comparison
in Annales Geophysicae
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
Qiu W
(2010)
New iterative cone beam CT reconstruction software: parameter optimisation and convergence study.
in Computer methods and programs in biomedicine
Rose J
(2014)
Ionospheric corrections for GPS time transfer
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
Smith A
(2008)
GPS scintillation in the high arctic associated with an auroral arc
in Space Weather
Smith N
(2009)
Image-model coupling: a simple information theoretic perspective for image sequences
in Nonlinear Processes in Geophysics
Smith N
(2010)
Image-model coupling: application to an ionospheric storm
in Nonlinear Processes in Geophysics
Smith N
(2012)
Towards adapting a normal patient database for SPECT brain perfusion imaging
in Inverse Problems
Soleimani M
(2009)
Medical imaging and physiological modelling: linking physics and biology.
in Biomedical engineering online
Soleimani M
(2009)
FOUR-DIMENSIONAL ELECTRICAL CAPACITANCE TOMOGRAPHY IMAGING USING EXPERIMENTAL DATA
in Progress In Electromagnetics Research
Spencer P
(2011)
Imaging of 3-D plasmaspheric electron density using GPS to LEO satellite differential phase observations
in Radio Science
Vincenzo Romano
(2013)
Measuring GNSS ionospheric total electron content at Concordia, and application to L-band radiometers
in Annals of Geophysics
Yin P
(2009)
Imaging of the Antarctic ionosphere: Experimental results
in Journal of Atmospheric and Solar-Terrestrial Physics
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
Yin P
(2014)
Improving the vertical electron density profile in ionospheric imaging at storm time: A case study on 25-27 September 2011
in Journal of Geophysical Research: Space Physics
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