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Atmospheric sounding over the winter Kuroshio Extension: Effect of surface stability on atmospheric boundary layer structure

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Title: Atmospheric sounding over the winter Kuroshio Extension: Effect of surface stability on atmospheric boundary layer structure
Authors: Tokinaga, Hiroki Browse this author
Tanimoto, Youichi2 Browse this author →KAKEN DB
Nonaka, Masami Browse this author
Taguchi, Bunmei Browse this author
Fukamachi, Tomohiro Browse this author
Xie, Shang-Ping Browse this author
Nakamura, Hisashi Browse this author →KAKEN DB
Watanabe, Tomowo Browse this author
Yasuda, Ichiro Browse this author →KAKEN DB
Authors(alt): 谷本, 陽一2
Keywords: Atmospheric Processes
Boundary layer processes
Ocean/atmosphere interactions
Oceanography
Marine meteorology
Issue Date: 17-Feb-2006
Publisher: American Geophysical Union
Journal Title: Geophysical Research Letters
Volume: 33
Issue: 4
Start Page: L04703
Publisher DOI: 10.1029/2005GL025102, 2006
Abstract: Shipboard radiosonde surveys were conducted during the 2003-04 winter east of Japan to study atmospheric boundary layer (ABL) structure over the Kuroshio Extension. ABL displayed large variations in vertical structure, most of which are attributable to changes in atmospheric surface stability. Where the surface atmosphere was unstable (neutral) as measured by the sea-air temperature difference, surface turbulent heat flux increased (decreased) and a mixed-layer developed (undeveloped) with weakened (intensified) vertical wind shear. A linear regression analysis indicates that ABL height tends to increase by 1km as the sea-air temperature difference increases by 7°C or surface turbulent heat flux by 500 Wm−2. While meridional thermal advection by weather disturbances seems to cause much of atmospheric stability variability during the 43-day surveys, the strong sensitivity of vertical mixing and wind shear to stability is consistent with the observed in-phase co-variability of SST and surface wind from satellite on monthly and longer timescales.
Rights: An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
Type: article
URI: http://hdl.handle.net/2115/14460
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 谷本 陽一

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