globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50963
论文题名:
A new wave scheme for trajectory simulations of stratospheric water vapor
作者: Kim J.-E.; Joan Alexander M.
刊名: Geophysical Research Letters
ISSN: 0094-8487
EISSN: 1944-8218
出版年: 2013
卷: 40, 期:19
起始页码: 5286
结束页码: 5290
语种: 英语
英文关键词: cold point temperature ; stratospheric water vapor ; temperature variability ; trajectory ; tropical tropopause layer ; wave parameterization
Scopus关键词: Amplification factors ; Cold point ; Radiosonde observations ; Realistic variability ; Statistical variability ; Temperature variability ; Trajectory simulation ; Tropical tropopause layers ; Amplification ; Dehydration ; Interpolation ; Trajectories ; Tropics ; Water vapor ; Clouds ; amplification ; amplitude ; cirrus ; numerical model ; parameterization ; radiosonde ; stratosphere ; trajectory ; tropical region ; tropopause ; water vapor
英文摘要: We have developed a new wave scheme particularly aiming to provide better temperature fields with realistic variability for trajectory modeling of dehydration processes in the tropical tropopause layer (TTL). The new scheme includes amplitude-phase interpolation and amplification of waves in reanalysis data. Amplification factors are based on statistical variability differences between reanalysis data and radiosonde observations at 24 tropical locations during 1997-2013 boreal winters. We show that conventional linear interpolation of temperatures in the vertical coordinate degrades wave amplitudes and variability. Amplitude-phase interpolation in Fourier space greatly mitigates the problem found in linear interpolation. Furthermore, amplitudes of existing waves in reanalyses were amplified to generate realistic variability. In addition to improvements in variability, the scheme lowers cold point temperatures and raises cold point tropopause heights. Having realistic variability with the new approach will reduce uncertainties in simulations of TTL cirrus clouds and stratospheric water vapor. Key Points Waves are underrepresented in trajectory studies of TTL dehydration Amplitude-phase interpolation with amplification gives realistic variability Having realistic TTL waves lowers cold point temperatures ©2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884946621&doi=10.1002%2fgrl.50963&partnerID=40&md5=7cb8bfbbf511f59cb6dd418379a31f2d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5751
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作者单位: Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO 80309, United States

Recommended Citation:
Kim J.-E.,Joan Alexander M.. A new wave scheme for trajectory simulations of stratospheric water vapor[J]. Geophysical Research Letters,2013-01-01,40(19).
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