DOI: 10.1002/2015GL064758
论文题名: Stratospheric imaging of polar mesospheric clouds: A new window on small-scale atmospheric dynamics
作者: Miller A.D. ; Fritts D.C. ; Chapman D. ; Jones G. ; Limon M. ; Araujo D. ; Didier J. ; Hillbrand S. ; Kjellstrand C.B. ; Korotkov A. ; Tucker G. ; Vinokurov Y. ; Wan K. ; Wang L.
刊名: Geophysical Research Letters
ISSN: 0094-9348
EISSN: 1944-9079
出版年: 2015
卷: 42, 期: 14 起始页码: 6058
结束页码: 6065
语种: 英语
英文关键词: atmospheric gravity waves
; energy and momentum deposition
; instabilities and turbulence
; multiscale dynamics
; polar mesospheric clouds
Scopus关键词: Atmospheric thermodynamics
; Balloons
; Deposition
; Dynamics
; Geometrical optics
; Gravity waves
; Meteorological balloons
; Turbulence
; Atmospheric dynamics
; Atmospheric gravity waves
; Multi-scale dynamics
; Polar mesospheric clouds
; Small-scale dynamics
; Stratospheric balloon
; Turbulence scale
; Turbulence structures
; Atmospheric turbulence
; atmospheric dynamics
; balloon observation
; cloud
; cosmology
; data interpretation
; gravity
; image analysis
; mesosphere
; numerical model
; quantitative analysis
; stratosphere
; turbulence
; videography
英文摘要: Instabilities and turbulence extending to the smallest dynamical scales play important roles in the deposition of energy and momentum by gravity waves throughout the atmosphere. However, these dynamics and their effects have been impossible to quantify to date due to lack of observational guidance. Serendipitous optical images of polar mesospheric clouds at ∼82 km obtained by star cameras aboard a cosmology experiment deployed on a stratospheric balloon provide a new observational tool, revealing instability and turbulence structures extending to spatial scales < 20 m. At 82 km, this resolution provides sensitivity extending to the smallest turbulence scale not strongly influenced by viscosity: the "inner scale" of turbulence, l0∼10(ν3/ε)1/4. Such images represent a new window into small-scale dynamics that occur throughout the atmosphere but are impossible to observe in such detail at any other altitude. We present a sample of images revealing a range of dynamics features and employ numerical simulations that resolve these dynamics to guide our interpretation of several observed events. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938976608&doi=10.1002%2f2015GL064758&partnerID=40&md5=a3c91cb2a52b0aa5b529b45dc249389f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8963
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Physics, Columbia University, New York, NY, United States
Recommended Citation:
Miller A.D.,Fritts D.C.,Chapman D.,et al. Stratospheric imaging of polar mesospheric clouds: A new window on small-scale atmospheric dynamics[J]. Geophysical Research Letters,2015-01-01,42(14).