Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations
The University of California, San Diego (UCSD) three-dimensional (3-D) time-dependent tomography program has been used successfully for a decade to reconstruct and forecast coronal mass ejections from interplanetary scintillation observations. More recently, we have extended this tomography techniqu...
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ftcdlib:qt056437md 2023-05-15T16:04:48+02:00 Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations Jackson, B. V. Hick, P. P. Bisi, M. M. Clover, J. M. Buffington, A. pp 245-256 2010-08-01 application/pdf http://www.escholarship.org/uc/item/056437md english eng eScholarship, University of California http://www.escholarship.org/uc/item/056437md qt056437md public Jackson, B. V.; Hick, P. P.; Bisi, M. M.; Clover, J. M.; & Buffington, A.(2010). Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations. Solar Physics: A Journal for Solar and Solar-Stellar Research and the Study of Solar Terrestrial Physics, 265(1), pp 245-256. doi:10.1007/s11207-010-9529-0. Retrieved from: http://www.escholarship.org/uc/item/056437md Physics Extraterrestrial Physics Space Sciences Meteorology/Climatology Astrophysics and Astroparticles Radio scintillation Velocity fields solar wind Coronal mass ejections interplanetary disturbances article 2010 ftcdlib https://doi.org/10.1007/s11207-010-9529-0 2016-04-02T18:50:34Z The University of California, San Diego (UCSD) three-dimensional (3-D) time-dependent tomography program has been used successfully for a decade to reconstruct and forecast coronal mass ejections from interplanetary scintillation observations. More recently, we have extended this tomography technique to use remote-sensing data from the Solar Mass Ejection Imager (SMEI) on board the Coriolis spacecraft; from the Ootacamund (Ooty) radio telescope in India; and from the European Incoherent SCATter (EISCAT) radar telescopes in northern Scandinavia. Finally, we intend these analyses to be used with observations from the Murchison Widefield Array (MWA), or the LOw Frequency ARray (LOFAR) now being developed respectively in Australia and Europe. In this article we demonstrate how in-situ velocity measurements from the Advanced Composition Explorer (ACE) space-borne instrumentation can be used in addition to remote-sensing data to constrain the time-dependent tomographic solution. Supplementing the remote-sensing observations with in-situ measurements provides additional information to construct an iterated solar-wind parameter that is propagated outward from near the solar surface past the measurement location, and throughout the volume. While the largest changes within the volume are close to the radial directions that incorporate the in-situ measurements, their inclusion significantly reduces the uncertainty in extending these measurements to global 3-D reconstructions that are distant in time and space from the spacecraft. At Earth, this can provide a finely-tuned real-time measurement up to the latest time for which in-situ measurements are available, and enables more-accurate forecasting beyond this than remote-sensing observations alone allow. Article in Journal/Newspaper EISCAT University of California: eScholarship Murchison ENVELOPE(144.250,144.250,-67.317,-67.317) Solar Physics 265 1-2 245 256 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Physics Extraterrestrial Physics Space Sciences Meteorology/Climatology Astrophysics and Astroparticles Radio scintillation Velocity fields solar wind Coronal mass ejections interplanetary disturbances |
spellingShingle |
Physics Extraterrestrial Physics Space Sciences Meteorology/Climatology Astrophysics and Astroparticles Radio scintillation Velocity fields solar wind Coronal mass ejections interplanetary disturbances Jackson, B. V. Hick, P. P. Bisi, M. M. Clover, J. M. Buffington, A. Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
topic_facet |
Physics Extraterrestrial Physics Space Sciences Meteorology/Climatology Astrophysics and Astroparticles Radio scintillation Velocity fields solar wind Coronal mass ejections interplanetary disturbances |
description |
The University of California, San Diego (UCSD) three-dimensional (3-D) time-dependent tomography program has been used successfully for a decade to reconstruct and forecast coronal mass ejections from interplanetary scintillation observations. More recently, we have extended this tomography technique to use remote-sensing data from the Solar Mass Ejection Imager (SMEI) on board the Coriolis spacecraft; from the Ootacamund (Ooty) radio telescope in India; and from the European Incoherent SCATter (EISCAT) radar telescopes in northern Scandinavia. Finally, we intend these analyses to be used with observations from the Murchison Widefield Array (MWA), or the LOw Frequency ARray (LOFAR) now being developed respectively in Australia and Europe. In this article we demonstrate how in-situ velocity measurements from the Advanced Composition Explorer (ACE) space-borne instrumentation can be used in addition to remote-sensing data to constrain the time-dependent tomographic solution. Supplementing the remote-sensing observations with in-situ measurements provides additional information to construct an iterated solar-wind parameter that is propagated outward from near the solar surface past the measurement location, and throughout the volume. While the largest changes within the volume are close to the radial directions that incorporate the in-situ measurements, their inclusion significantly reduces the uncertainty in extending these measurements to global 3-D reconstructions that are distant in time and space from the spacecraft. At Earth, this can provide a finely-tuned real-time measurement up to the latest time for which in-situ measurements are available, and enables more-accurate forecasting beyond this than remote-sensing observations alone allow. |
format |
Article in Journal/Newspaper |
author |
Jackson, B. V. Hick, P. P. Bisi, M. M. Clover, J. M. Buffington, A. |
author_facet |
Jackson, B. V. Hick, P. P. Bisi, M. M. Clover, J. M. Buffington, A. |
author_sort |
Jackson, B. V. |
title |
Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
title_short |
Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
title_full |
Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
title_fullStr |
Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
title_full_unstemmed |
Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations |
title_sort |
inclusion of in-situ velocity measurements into the ucsd time-dependent tomography to constrain and better-forecast remote-sensing observations |
publisher |
eScholarship, University of California |
publishDate |
2010 |
url |
http://www.escholarship.org/uc/item/056437md |
op_coverage |
pp 245-256 |
long_lat |
ENVELOPE(144.250,144.250,-67.317,-67.317) |
geographic |
Murchison |
geographic_facet |
Murchison |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
Jackson, B. V.; Hick, P. P.; Bisi, M. M.; Clover, J. M.; & Buffington, A.(2010). Inclusion of In-Situ Velocity Measurements into the UCSD Time-Dependent Tomography to Constrain and Better-Forecast Remote-Sensing Observations. Solar Physics: A Journal for Solar and Solar-Stellar Research and the Study of Solar Terrestrial Physics, 265(1), pp 245-256. doi:10.1007/s11207-010-9529-0. Retrieved from: http://www.escholarship.org/uc/item/056437md |
op_relation |
http://www.escholarship.org/uc/item/056437md qt056437md |
op_rights |
public |
op_doi |
https://doi.org/10.1007/s11207-010-9529-0 |
container_title |
Solar Physics |
container_volume |
265 |
container_issue |
1-2 |
container_start_page |
245 |
op_container_end_page |
256 |
_version_ |
1766400434249924608 |