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
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 TOTAL ELECTRON CONTENT MAPPING WITH GPS
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 F REGION HEIGHT REDISTRIBUTION
in Geophysical Research Letters
Materassi M
(2007)
Wavelet analysis of GPS amplitude scintillation: A case study WAVELET ANALYSIS OF GPS SCINTILLATION
in Radio Science
Dear R
(2007)
Ionospheric imaging at mid-latitudes using both GPS and ionosondes
in Journal of Atmospheric and Solar-Terrestrial Physics
Bust G
(2007)
Four-dimensional GPS imaging of space weather storms FOUR-DIMENSIONAL GPS IMAGING
in Space Weather
Mitchell C
(2007)
Advances in Earth Science - From Earthquakes to Global Warming
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
Pokhotelov D
(2008)
Ionospheric storm time dynamics as seen by GPS tomography and in situ spacecraft observations IONOSPHERIC STORM TIME DYNAMICS
in Journal of Geophysical Research: Space Physics
Bust G
(2008)
History, current state, and future directions of ionospheric imaging
in Reviews of Geophysics
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 GPS SCINTILLATION IN THE HIGH ARCTIC
in Space Weather
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
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
Burston R
(2009)
Correlation between scintillation indices and gradient drift wave amplitudes in the northern polar ionosphere SCINTILLATION INDICES/GDI CORRELATIONS
in Journal of Geophysical Research: Space Physics
Pokhotelov D
(2009)
Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002 IONOSPHERIC RESPONSE TO CIR STORM
in Journal of Geophysical Research: Space Physics
Soleimani M
(2009)
Medical imaging and physiological modelling: linking physics and biology.
in Biomedical engineering online
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
Yin P
(2009)
Imaging of the Antarctic ionosphere: Experimental results
in Journal of Atmospheric and Solar-Terrestrial Physics
Pengpan T
(2010)
A dual modality of cone beam CT and electrical impedance tomography for lung imaging
in Journal of Physics: Conference Series