Solar Cycle and Long-Term Trends in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars

被引：12

作者：

Dawkins, E. C. M. ^{[1
,2
]}

Stober, G. ^{[3
]}

Janches, D. ^{[1
]}

Carrillo-Sanchez, J. D. ^{[1
,2
]}

Lieberman, R. S. ^{[1
]}

Jacobi, C. ^{[4
]}

Moffat-Griffin, T. ^{[5
]}

Mitchell, N. J. ^{[5
,6
]}

Cobbett, N. ^{[5
]}

Batista, P. P. ^{[7
]}

Andrioli, V. F. ^{[7
,8
]}

Buriti, R. A. ^{[9
]}

Murphy, D. J. ^{[10
]}

Kero, J. ^{[11
]}

Gulbrandsen, N. ^{[12
]}

Tsutsumi, M. ^{[13
,14
]}

Kozlovsky, A. ^{[15
]}

Kim, J. H. ^{[16
]}

Lee, C. ^{[16
]}

Lester, M. ^{[17
]}

机构：

[1] NASA Goddard Space Flight Ctr, ITM Phys Lab, Greenbelt, MD 20771 USA

[2] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[3] Univ Bern, Inst Appl Phys, Microwave Phys, Bern, Switzerland

[4] Univ Leipzig, Inst Meteorol, Leipzig, Germany

[5] British Antarctic Survey, Cambridge, England

[6] Univ Bath, Bath, England

[7] Natl Inst Space Res INPE, Sao Jose Dos Campos, Brazil

[8] INPE, NSSC, China Brazil Joint Lab Space Weather, Sao Jose Dos Campos, Brazil

[9] Univ Fed Campina Grande, Dept Phys, Campina Grande, Brazil

[10] Australian Antarctic Div, Kingston, Tas, Australia

[11] Swedish Inst Space Phys IRF, Kiruna, Sweden

[12] UiT Arctic Univ Norway, Tromso Geophys Observ, Tromso, Norway

[13] Natl Inst Polar Res, Tachikawa, Japan

[14] Grad Univ Adv Studies SOKENDAI, Tokyo, Japan

[15] Univ Oulu, Sodankyla Geophys Observ, Oulu, Finland

[16] Korea Polar Res Inst, Div Atmospher Sci, Incheon, South Korea

[17] Univ Leicester, Dept Phys & Astron, Leicester, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2023年 / 50卷 / 02期

基金：

英国自然环境研究理事会; 英国科学技术设施理事会;

关键词：

meteor; altitude; mesosphere; meteor radar; climate change; mesopause; WAVE MOMENTUM FLUX; MIDDLE ATMOSPHERE; TEMPERATURE TRENDS; DECADAL VARIABILITY; CARBON-DIOXIDE; WATER-VAPOR; MESOSPHERE; MESOPAUSE; DYNAMICS; HEIGHTS;

D O I：

10.1029/2022GL101953

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The mesosphere/lower thermosphere (MLT, 80-100 km) region is an important boundary between Earth's atmosphere below and space above and may act as a sensitive indicator for anthropogenic climate change. Existing observational and modeling studies have shown the middle atmosphere and the MLT is cooling and contracting because of increasing greenhouse gas emissions. However, trend analyses are highly sensitive to the time periods covered, their length, and the measurement type and methodology used. We present for the first time the linear and 11-year solar cycle responses in the meteor ablation altitude distributions observed by 12 meteor radars at different locations. Decreasing altitudes were seen at all latitudes (linear trends varying from -10.97 to -817.95 m dec(-1)), and a positive correlation with solar activity was seen for most locations. The divergence of responses at high latitudes indicates an important and complex interplay between atmospheric changes and dynamics at varying time scales.

引用

页数：11

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