Assessing Doppler velocities of Rankin Inlet F-region echoes
Doppler velocities observed by the Rankin Inlet (RKN) PolarDARN radar are assessed with a focus on data in the beams oriented roughly along the magnetic meridian. Hourly scatter plots for every month are built. They are shown to vary widely, with median values showing very clear magnetic local time...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Polar Research Institute of China - PRIC
2013
|
Subjects: | |
Online Access: | http://library.arcticportal.org/2479/ http://library.arcticportal.org/2479/1/A20130106.pdf |
id |
ftarcticportal:oai:generic.eprints.org:2479 |
---|---|
record_format |
openpolar |
spelling |
ftarcticportal:oai:generic.eprints.org:2479 2023-10-25T01:28:10+02:00 Assessing Doppler velocities of Rankin Inlet F-region echoes Koustov, Alexander V Colville, Kale Fiori, Robyn A D Ghezelbash, Mohsen 2013-03 application/pdf http://library.arcticportal.org/2479/ http://library.arcticportal.org/2479/1/A20130106.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2479/1/A20130106.pdf Koustov, Alexander V and Colville, Kale and Fiori, Robyn A D and Ghezelbash, Mohsen (2013) Assessing Doppler velocities of Rankin Inlet F-region echoes. Advances in Polar Science, 24 (1). pp. 50-59. Atmosphere Article PeerReviewed 2013 ftarcticportal 2023-09-27T22:54:11Z Doppler velocities observed by the Rankin Inlet (RKN) PolarDARN radar are assessed with a focus on data in the beams oriented roughly along the magnetic meridian. Hourly scatter plots for every month are built. They are shown to vary widely, with median values showing very clear magnetic local time variation with maximum magnitude during pre-noon and pre-midnight hours. The histograms contain a significant amount of very small velocity data that dominates at farther ranges and during the daytime. Near noon data show generally antisunward flows but at large ranges/magnetic latitudes and very close to noon, sunward flows occur for periods of positive IMF Bz. The reverse flows are stronger during spring equinox. The velocity magnitude was found to depend linearly on the IMF Bz and interplanetary electric field. Velocities are often found to be smaller than those expected from the statistical convection model of Ruohoniemi and Greenwald –1996. Article in Journal/Newspaper Advances in Polar Science Polar Science Polar Science Rankin Inlet Arctic Portal Library Rankin Inlet ENVELOPE(-91.983,-91.983,62.734,62.734) |
institution |
Open Polar |
collection |
Arctic Portal Library |
op_collection_id |
ftarcticportal |
language |
English |
topic |
Atmosphere |
spellingShingle |
Atmosphere Koustov, Alexander V Colville, Kale Fiori, Robyn A D Ghezelbash, Mohsen Assessing Doppler velocities of Rankin Inlet F-region echoes |
topic_facet |
Atmosphere |
description |
Doppler velocities observed by the Rankin Inlet (RKN) PolarDARN radar are assessed with a focus on data in the beams oriented roughly along the magnetic meridian. Hourly scatter plots for every month are built. They are shown to vary widely, with median values showing very clear magnetic local time variation with maximum magnitude during pre-noon and pre-midnight hours. The histograms contain a significant amount of very small velocity data that dominates at farther ranges and during the daytime. Near noon data show generally antisunward flows but at large ranges/magnetic latitudes and very close to noon, sunward flows occur for periods of positive IMF Bz. The reverse flows are stronger during spring equinox. The velocity magnitude was found to depend linearly on the IMF Bz and interplanetary electric field. Velocities are often found to be smaller than those expected from the statistical convection model of Ruohoniemi and Greenwald –1996. |
format |
Article in Journal/Newspaper |
author |
Koustov, Alexander V Colville, Kale Fiori, Robyn A D Ghezelbash, Mohsen |
author_facet |
Koustov, Alexander V Colville, Kale Fiori, Robyn A D Ghezelbash, Mohsen |
author_sort |
Koustov, Alexander V |
title |
Assessing Doppler velocities of Rankin Inlet F-region echoes |
title_short |
Assessing Doppler velocities of Rankin Inlet F-region echoes |
title_full |
Assessing Doppler velocities of Rankin Inlet F-region echoes |
title_fullStr |
Assessing Doppler velocities of Rankin Inlet F-region echoes |
title_full_unstemmed |
Assessing Doppler velocities of Rankin Inlet F-region echoes |
title_sort |
assessing doppler velocities of rankin inlet f-region echoes |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2013 |
url |
http://library.arcticportal.org/2479/ http://library.arcticportal.org/2479/1/A20130106.pdf |
long_lat |
ENVELOPE(-91.983,-91.983,62.734,62.734) |
geographic |
Rankin Inlet |
geographic_facet |
Rankin Inlet |
genre |
Advances in Polar Science Polar Science Polar Science Rankin Inlet |
genre_facet |
Advances in Polar Science Polar Science Polar Science Rankin Inlet |
op_relation |
http://library.arcticportal.org/2479/1/A20130106.pdf Koustov, Alexander V and Colville, Kale and Fiori, Robyn A D and Ghezelbash, Mohsen (2013) Assessing Doppler velocities of Rankin Inlet F-region echoes. Advances in Polar Science, 24 (1). pp. 50-59. |
_version_ |
1780733099135467520 |