Development of general circulation model with chemistry and studies on stratospheric material transport

化学大气环流模型的建立和平流层物质输运研究

• 批准号: 11219202
• 负责人: TAKAHASHI Masaaki
• 金额: $ 28.86万
• 依托单位: Tokyo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11219202/
• 关键词: stratospheric ozone; gravity waves; General Circulation Models; chemical processes; ozone hole; aerosol; SOx; Baiu front; 動力波; 成層圏化学過程; 極成層圏雲; 臭素系物質; ナッジング; 高分解能水惑星モデル; 大気化学; 物質循環; 大気大循環化学モデル; オゾン; HOX; NOX; CLOX

Stratospheric ozone change and it's impact to climate change are studied, using General Circulation Models (GCMs). Main subjects are ;1) We investigate the mechanism of ozone change and climate impact including stratospheric chemical processes to GCMs.2) We investigate dynamical processes, transport processes, and relation to chemical processes using high resolution GCMs.Firstly, stratospheric aerosol processes are included in chemical GCMs. Then, stratospheric Sox chemistry and Sox budgets in the stratosphere are studied. Stratospheric Sox budgets are mainly determined by SO_2 in the troposphere, and transported to the stratosphere. After that, stratospheric aerosols are formed. Next, polar stratospheric clouds processes are included in chemical GCMs. Then, ozone hole experiments are done. Though ozone hole is simulated in the northern hemisphere, year to year variations are strong. Ozone hole is weak in other year, and ozone hole is strong in a year. Southern hemisphere ozone hole is also simulated, but stratospheric sudden warming and ozone hole breaking are not simulated. This is because the model has cooling bias in the polar stratosphere. Further, future ozone hole simulation is done. Ozone hole recovery in the southern hemisphere is about year 2040 in the model. This result is almost determined by fron loading.High resolution physical GCMs are developed. The model can simulate meso-scale phenomena. Baiu front, ITCZ, SPCZ are well simulated. High resolution GCMS also simulate gravity waves. Gravity waves are important in the stratosphere. Diurnal cycle gravity waves are well simulated in the equatorial lower stratosphere.

利用大气环流模式（GCMs）研究了平流层臭氧的变化及其对气候变化的影响。主要科目有：1）利用高分辨率大气环流模式研究了平流层气溶胶的动力过程、输送过程及其与化学过程的关系。然后，研究了平流层Sox化学和平流层Sox收支。平流层Sox收支主要由对流层SO_2决定，并向平流层输送。之后，平流层气溶胶形成。其次，将极地平流层云的过程纳入化学大气环流模型。然后，进行了臭氧洞实验。虽然臭氧洞是在北方模拟的，但年与年之间的变化很大。臭氧层空洞在其他年份较弱，在某一年份较强。南半球臭氧洞也被模拟，但平流层突然变暖和臭氧洞破裂没有被模拟。这是因为该模型在极地平流层有冷却偏差。此外，未来的臭氧洞模拟。在模型中，南半球臭氧洞的恢复大约在2040年。这一结果基本上是由前负荷决定的。该模式可以模拟中尺度现象。BAIU锋面、ITCZ、SPCZ模拟效果较好。高分辨率GCMS也模拟重力波。重力波在平流层中很重要。在赤道平流层低层，日周期重力波得到了很好的模拟。

项目成果

Horinouchi, T.: "Mesoscale variability of tropical precitation : validation of satellite estimates of wave forcing using TOGA-COARE radar data"J. Atmos. Sci.. 59-16. 2428-2437 (2002)

Horinouchi, T.：“热带降水的中尺度变化：使用 TOGA-COARE 雷达数据验证卫星对波浪强迫的估计”J.

Nagashima, T., M.Takahashi, M.Takigawa, H.Akiyoshi: "Future development of the ozone layer calculated by a general circulation model with fully interactive chemistry"Geophys.Res.Letters. 29(8). 3.1-3.4 (2002)

Nagashima, T.、M.Takahashi、M.Takikawa、H.Akiyoshi：“通过具有完全交互化学的大气环流模型计算的臭氧层的未来发展”Geophys.Res.Letters。

Kawatani, Y., M.Takahashi: "Simulation of the Baiu front in a high resolution AGCM"J.Meteor.Soc.Japan. 81(in press). (2003)

Kawatani, Y., M.Takahashi：“高分辨率 AGCM 中的 Baiu 锋面模拟”J.Meteor.Soc.Japan。

Akiyoshi, H., S.Sugata, T.Sugita, H.Nakajima, M.Takahashi: "A low-N2O airmass simulated by the CCSR/NIES nudging CTM and observed by ILAS in 1997"J. Meteor. Soc. Japan. (in press). (2002)

Akiyoshi, H., S.Sugata, T.Sugita, H.Nakajima, M.Takahashi：“CCSR/NIES 微动 CTM 模拟并由 ILAS 于 1997 年观测到的低 N2O 气团”J.

Nagashima, T, M. Takahashi and F. Hasebe: "The first simulation of an ozone QBO in a general circulation model"Geophys. Res. Letters. 25. 3131-3134 (1998)

Nagashima、T、M. Takahashi 和 F. Hasebe：“大气环流模型中臭氧 QBO 的首次模拟”Geophys。