Variations in Thermosphere Composition and Ionosphere Total Electron Content Under "Geomagnetically Quiet" Conditions at Solar-Minimum

被引：51

作者：

Cai, Xuguang ^{[1
]}

Burns, Alan G. ^{[1
]}

Wang, Wenbin ^{[1
]}

Qian, Liying ^{[1
]}

Pedatella, Nicholas ^{[1
]}

Coster, Anthea ^{[2
]}

Zhang, Shunrong ^{[2
]}

Solomon, Stanley C. ^{[1
]}

Eastes, Richard W. ^{[3
]}

Daniell, Robert E. ^{[4
]}

McClintock, William E. ^{[3
]}

机构：

[1] Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA

[2] MIT, Haystack Observ, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA

[4] Ionospher Phys, Stoughton, WI USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 11期

基金：

美国国家科学基金会; 英国自然环境研究理事会;

关键词：

geomagnetic activity; O; N-2 column density ratio; thermosphere composition; total electron content; LATENT-HEAT RELEASE; UPPER-ATMOSPHERE; VARIABILITY; WAVE; TIDES;

D O I：

10.1029/2021GL093300

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We conducted observational and modeling studies of thermospheric composition and ionospheric total electron content (TEC) variations during two geomagnetically quiet periods (maximum Kp = 1.7) at solar minimum. Daytime thermospheric O and N-2 column density ratio ( n-ary sumation O/N-2) observed by Global-scale Observations of the Limb and Disk and TEC from a network of ground-based Global Navigation Satellites System receivers both exhibited large (similar to 30% of reference values) and long-lived (5-11 h) day-to-day variations in roughly the same mid-latitude geographic regions. Numerical simulations replicated the observed variability, though not perfectly. Analysis of the simulations suggested that the variations were mainly generated in the high-latitudes and were subsequently advected equatorward and westward. When high-latitudes input was turned off in simulations, the variations were negligible. This suggested the potentially important role of high-latitude geomagnetic forcing in thermospheric composition and ionospheric density variations at mid-latitudes even during some "geomagnetically quiet" periods at solar-minimum.

引用

页数：9

共 34 条

[1] PROCESSES RESPONSIBLE FOR THE COMPOSITIONAL STRUCTURE OF THE THERMOSPHERE [J].

BURNS, AG ;

KILLEEN, TL ;

ROBLE, RG .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A4) :3670-3686

[2]

Cai X., 2021, J. Geophys. Res. Space Phys., V2021, DOI [10.1029/2020JA028817, DOI 10.1029/2020JA028817]

[3] The Two-Dimensional Evolution of Thermospheric n-ary sumation O/N2Response to Weak Geomagnetic Activity During Solar-Minimum Observed by GOLD [J].

Cai, Xuguang ;

Burns, Alan G. ;

Wang, Wenbin ;

Qian, Liying ;

Solomon, Stanley C. ;

Eastes, Richard W. ;

Pedatella, Nicholas ;

Daniell, Robert E. ;

McClintock, William E. .

GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (18)

[4] Quasi two day wave-related variability in the background dynamics and composition of themesosphere/thermosphere and the ionosphere [J].

Chang, Loren C. ;

Yue, Jia ;

Wang, Wenbin ;

Wu, Qian ;

Meier, R. R. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2014, 119 (06) :4786-4804

[5] Initial Observations by the GOLD Mission [J].

Eastes, R. W. ;

McClintock, W. E. ;

Burns, A. G. ;

Anderson, D. N. ;

Andersson, L. ;

Aryal, S. ;

Budzien, S. A. ;

Cai, X. ;

Codrescu, M., V ;

Correira, J. T. ;

Daniell, R. E. ;

Dymond, K. F. ;

England, S. L. ;

Eparvier, F. G. ;

Evans, J. S. ;

Foroosh, H. ;

Gan, Q. ;

Greer, K. R. ;

Karan, D. K. ;

Krywonos, A. ;

Laskar, F., I ;

Lumpe, J. D. ;

Martinis, C. R. ;

McPhate, J. B. ;

Oberheide, J. ;

Siegmund, O. H. ;

Solomon, S. C. ;

Veibel, V. ;

Woods, T. N. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2020, 125 (07)

[6] The Global-Scale Observations of the Limb and Disk (GOLD) Mission [J].

Eastes, R. W. ;

McClintock, W. E. ;

Burns, A. G. ;

Anderson, D. N. ;

Andersson, L. ;

Codrescu, M. ;

Correira, J. T. ;

Daniell, R. E. ;

England, S. L. ;

Evans, J. S. ;

Harvey, J. ;

Krywonos, A. ;

Lumpe, J. D. ;

Richmond, A. D. ;

Rusch, D. W. ;

Siegmund, O. ;

Solomon, S. C. ;

Strickland, D. J. ;

Woods, T. N. ;

Aksnes, A. ;

Budzien, S. A. ;

Dymond, K. F. ;

Eparvier, F. G. ;

Martinis, C. R. ;

Oberheide, J. .

SPACE SCIENCE REVIEWS, 2017, 212 (1-2) :383-408

[7] Oscillation of the Ionosphere at Planetary-Wave Periods [J].

Forbes, J. M. ;

Maute, A. ;

Zhang, X. ;

Hagan, M. E. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2018, 123 (09) :7634-7649

[8] Variability of the ionosphere [J].

Forbes, JM ;

Palo, SE ;

Zhang, XL .

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2000, 62 (08) :685-693

[9] Observations of thermosphere and ionosphere changes due to the dissipative 6.5-day wave in the lower thermosphere [J].

Gan, Q. ;

Yue, J. ;

Chang, L. C. ;

Wang, W. B. ;

Zhang, S. D. ;

Du, J. .

ANNALES GEOPHYSICAE, 2015, 33 (07) :913-922

[10] Migrating and nonmigrating semidiurnal tides in the upper atmosphere excited by tropospheric latent heat release [J].

Hagan, ME ;

Forbes, JM .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2003, 108 (A2)

← 1 2 3 4 →