A Study on the 3-dimensional Material Transport Structure Between the Stratosphere and the Troposphere in the Extratropics.

温带平流层与对流层之间的三维物质输运结构研究。

• 批准号: 08454125
• 负责人: YAMAZAKI Koji
• 金额: $ 4.48万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08454125/
• 关键词: Material transport; Stratosphere; Polar vortex; Tropopause; Water vapor; QBO; 対流圏・成層圏間物質輸送; オゾン; ピナツボ; 傾圧擾乱; GCM; 成層圏・対流圏; 子午面循環; 大気大循環モデル

The air entered from the troposphere to the stratosphere in the equatorial region moves toward extratropical stratosphere and returned into the troposphere in the extratropics. This circulation is important for determining ozone and water vapor distribution. These gases are essential for heat balance in the stratosphere. Under this project the understanding of the climatology and the seasonal variation of meridional circulation is greatly improved. The following are major results obtained in this project.From the vertical profiles of tracer constituents observed by the UARS satellite, the wintertime downward velocity in the Antarctic polar vortex is estimated. Also, the upward velocity in the equatorial region associated with the QBO is estimated and the phase relation between the vertical motion and the temperature is shown. Using the objective analysis data, the reverse circulation in the subtropical region associated with the QBO is shown for the first time. Also, the global circulation change after the Pinatubo eruption and the seasonal variation of downward motion in the polar regions are quantitatively obtained. It is shown that the stratospheric fountain hypothesis is not needed. The summer weather regime is analysed over the north Atlantic region. The circulation and water vapor distribution of an idealized middle atmosphere is studied.The last two points are indirect to the research theme, but' the interesting results are obtained. The 3-dimensional structure has not been clarified yet and the modeling study is not completed. However, this project is a stating point of this subject. Further study is expected.

在赤道地区从对流层进入平流层的空气向温带平流层移动，并在温带地区返回对流层。这种循环对确定臭氧和水蒸气的分布很重要。这些气体对平流层的热平衡至关重要。通过该项目，大大提高了对气候学和经向环流季节变化的认识。以下是本项目取得的主要成果。根据UARS卫星观测到的示踪成分的垂直剖面，估计了南极极涡冬季的下降速度。此外，还估计了与QBO有关的赤道地区的上升速度，并给出了垂直运动与温度之间的相位关系。利用客观分析资料，首次揭示了与QBO相关的副热带逆环流。定量得到了皮纳图博火山喷发后的全球环流变化和极地向下运动的季节变化。结果表明，平流层喷泉假说是不需要的。分析了北大西洋地区夏季的天气状况。研究了理想中大气的环流和水汽分布。后两点与研究主题无关，但得到了有趣的结果。三维结构尚未明确，建模研究尚未完成。然而，这个项目是这个主题的一个立足点。需要进一步的研究。

项目成果

Seol.D.I.and K.Yamazaki: "QBO and Pinatubo signals in the mass flux at 100hPa and stratospheric circulation" Geophysical Research Letters. 25,10. 1641-1644 (1998)

Seol.D.I. 和 K.Yamazaki：“100hPa 质量通量和平流层环流中的 QBO 和 Pinatubo 信号”地球物理研究快报。

Seol, D.I.and K.Yamazaki: "QBO and Pinarubo signals in the mass flux at 100hPa and stratospheric circulation" Geophysical Research Letters. 25. 1641-1644 (1998)

Seol、D.I. 和 K.Yamazaki：“100hPa 质量通量和平流层环流中的 QBO 和 Pinarubo 信号”地球物理研究快报。

Kawamoto, N. , Shiotani, M. and Gille, J.C.: "Equatorial Kelvin waves and corresponding tracer oscillations in the lower stratosphere as seen in LIMS date" Journal of Meteorological Society, Japan. 75. 763-773 (1997)

Kawamoto, N.、Shiotani, M. 和 Gille, J.C.：“LIMS 数据中看到的平流层下部赤道开尔文波和相应的示踪振荡”，日本气象学会杂志。

Hayashi, H., M.Shiotani and J.C.Gille: "Vertically stacked temperature disturbances near the equatorial stratopause as seen in cryogenic limb array etalon spectrometer data." Journal of Geophysical Research. 103. 19469-19483 (1998)

Hayashi, H.、M.Shiotani 和 J.C.Gille：“如低温肢阵列标准具光谱仪数据中所见，赤道平流层顶附近的垂直堆叠温度扰动。”

Giovinetto, M.B., K.Yamazaki, G.Wendler and D.H.Bromwich: "Atmospheric net transport of water vapor and latent heat across 60S." Journal of Geophysical Research. 102. 11171-11179 (1997)

Giovinetto, M.B.、K.Yamazaki、G.Wendler 和 D.H.Bromwich：“跨越 60S 的大气水蒸气和潜热净传输。”