FORMOSAT-3/COSMIC observations of the ionospheric auroral oval development

Ho Fang Tsai; Jann Yenq Liu; Chien Hung Lin; Mei Lan Hsu

doi:10.1007/s10291-009-0137-0

FORMOSAT-3/COSMIC observations of the ionospheric auroral oval development

Ho Fang Tsai, Jann Yenq Liu, Chien Hung Lin, Mei Lan Hsu

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10 Scopus citations

Abstract

The ionospheric radiance and electron density observed by the tiny ionospheric photometer (TIP) and GPS occultation experiment (GOX) payloads on FORMOSAT-3/COSMIC satellites are applied to determine the boundaries of the auroral oval and its width in the winter nighttime ionosphere for both hemispheres. The TIP collects ionospheric emission at 135.6 nm due to electron impact excitation, while the GOX offers ionospheric electron density profiles with radio occultation (RO) technique. Comparison between them shows similar patterns of the plasma structure in the polar caps. The mean width of the auroral bands ranges between about 2 and 11° latitude in the winter nighttime and it varies with longitudes. The comparison by month suggests that the mean radius of the auroral ovals varies with the intensity of the auroral radiance.

Original language	English
Pages (from-to)	91-97
Number of pages	7
Journal	GPS Solutions
Volume	14
Issue number	1
DOIs	https://doi.org/10.1007/s10291-009-0137-0
State	Published - Jan 2010

Keywords

Auroral radiance
COSMIC
FORMOSAT-3
GPS occultation experiment
Ionospheric auroral oval
Tiny ionospheric photometer

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10.1007/s10291-009-0137-0

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title = "FORMOSAT-3/COSMIC observations of the ionospheric auroral oval development",

abstract = "The ionospheric radiance and electron density observed by the tiny ionospheric photometer (TIP) and GPS occultation experiment (GOX) payloads on FORMOSAT-3/COSMIC satellites are applied to determine the boundaries of the auroral oval and its width in the winter nighttime ionosphere for both hemispheres. The TIP collects ionospheric emission at 135.6 nm due to electron impact excitation, while the GOX offers ionospheric electron density profiles with radio occultation (RO) technique. Comparison between them shows similar patterns of the plasma structure in the polar caps. The mean width of the auroral bands ranges between about 2 and 11° latitude in the winter nighttime and it varies with longitudes. The comparison by month suggests that the mean radius of the auroral ovals varies with the intensity of the auroral radiance.",

keywords = "Auroral radiance, COSMIC, FORMOSAT-3, GPS occultation experiment, Ionospheric auroral oval, Tiny ionospheric photometer",

author = "Tsai, {Ho Fang} and Liu, {Jann Yenq} and Lin, {Chien Hung} and Hsu, {Mei Lan}",

note = "Funding Information: Acknowledgment This work was supported by the National Space Organization in Taiwan grant 98-NSPO(B)-GE-GH01-03.",

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AU - Tsai, Ho Fang

AU - Liu, Jann Yenq

AU - Lin, Chien Hung

AU - Hsu, Mei Lan

N1 - Funding Information: Acknowledgment This work was supported by the National Space Organization in Taiwan grant 98-NSPO(B)-GE-GH01-03.

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Y1 - 2010/1

N2 - The ionospheric radiance and electron density observed by the tiny ionospheric photometer (TIP) and GPS occultation experiment (GOX) payloads on FORMOSAT-3/COSMIC satellites are applied to determine the boundaries of the auroral oval and its width in the winter nighttime ionosphere for both hemispheres. The TIP collects ionospheric emission at 135.6 nm due to electron impact excitation, while the GOX offers ionospheric electron density profiles with radio occultation (RO) technique. Comparison between them shows similar patterns of the plasma structure in the polar caps. The mean width of the auroral bands ranges between about 2 and 11° latitude in the winter nighttime and it varies with longitudes. The comparison by month suggests that the mean radius of the auroral ovals varies with the intensity of the auroral radiance.

AB - The ionospheric radiance and electron density observed by the tiny ionospheric photometer (TIP) and GPS occultation experiment (GOX) payloads on FORMOSAT-3/COSMIC satellites are applied to determine the boundaries of the auroral oval and its width in the winter nighttime ionosphere for both hemispheres. The TIP collects ionospheric emission at 135.6 nm due to electron impact excitation, while the GOX offers ionospheric electron density profiles with radio occultation (RO) technique. Comparison between them shows similar patterns of the plasma structure in the polar caps. The mean width of the auroral bands ranges between about 2 and 11° latitude in the winter nighttime and it varies with longitudes. The comparison by month suggests that the mean radius of the auroral ovals varies with the intensity of the auroral radiance.

KW - Auroral radiance

KW - COSMIC

KW - FORMOSAT-3

KW - GPS occultation experiment

KW - Ionospheric auroral oval

KW - Tiny ionospheric photometer

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DO - 10.1007/s10291-009-0137-0

M3 - 期刊論文

AN - SCOPUS:71249138465

SN - 1080-5370

VL - 14

SP - 91

EP - 97

JO - GPS Solutions

JF - GPS Solutions

IS - 1

ER -

FORMOSAT-3/COSMIC observations of the ionospheric auroral oval development

Abstract

Keywords

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