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The quasi-2day wave activities during 2007 boreal summer period as revealed by Whole Atmosphere Community Climate Model

文献类型：期刊论文

作者Gu, Sheng-Yang1,2,3; Liu, Han-Li4; Pedatella, N. M.4; Dou, Xiankang2,3; Shu, Zhifeng2,3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2016-07-01
卷号121期号:7页码:7256-7268
关键词quasi-2day wave boreal summer WACCM
DOI10.1002/2016JA022867
文献子类Article
英文摘要The ensemble data assimilation version of the Whole Atmosphere Community Climate Model+Data Assimilation Research Testbed developed at National Center for Atmospheric Research is utilized to study the quasi-2day wave (QTDW) activities during boreal summer period of 2007. The westward wave number 3 (W3) and 4 (W4) modes intermittently dominated the QTDW oscillations at different times. The W3 peaked 4 times from day 172 to day 224 with the major peak at around days 199-206 being much stronger than the others. The W4 also showed a quadruple structure during the whole summer period but with their amplitudes comparable with each other. The period of W4 increases from similar to 42h on day 186 (with stronger easterly jet) to 56h on day 225 (with weaker easterly jet), while the W3 period is more stable with the maximum perturbation occurring at similar to 52h. Thus, the W3 exhibits more normal mode features than W4. Further diagnostic analysis shows that the barotropically/baroclinically unstable regions at middle and low latitudes are more effective for the amplification of W3 with stronger instabilities providing larger forcing. Moreover, the temporal variability of the refractive indexes and critical layers of W4, which are related to the background wind, are responsible for its period variations. We also find that the absence of a westward wave number 2 (W2) QTDW during boreal summer of 2007 is due to the weaker easterly jet compared with that during austral summer.
WOS关键词2-DAY WAVE ; HEMISPHERE SUMMER ; LONG-TERM ; MIDDLE ; RADAR
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000383422100087
资助机构Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; 41421063 ; 41421063 ; 41421063 ; 41421063 ; 41025016 ; 41025016 ; 41025016 ; 41025016 ; 41304123) ; 41304123) ; 41304123) ; 41304123) ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; China Postdoctoral Science Foundation(2015 M582001) ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; National Natural Science Foundation of China(41274150 ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; CAS Key Research Program(KZZD-EW-01-1) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; Hundred Talents Program (D) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Basic Research Program of China(2012CB825605) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; National Science Foundation(AGS-1138784) ; 41421063 ; 41421063 ; 41421063 ; 41421063 ; 41025016 ; 41025016 ; 41025016 ; 41025016 ; 41304123) ; 41304123) ; 41304123) ; 41304123)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53348]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China
3.Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei, Peoples R China
4.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
推荐引用方式
GB/T 7714		 Gu, Sheng-Yang,Liu, Han-Li,Pedatella, N. M.,et al. The quasi-2day wave activities during 2007 boreal summer period as revealed by Whole Atmosphere Community Climate Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(7):7256-7268.
APA Gu, Sheng-Yang,Liu, Han-Li,Pedatella, N. M.,Dou, Xiankang,&Shu, Zhifeng.(2016).The quasi-2day wave activities during 2007 boreal summer period as revealed by Whole Atmosphere Community Climate Model.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(7),7256-7268.
MLA Gu, Sheng-Yang,et al."The quasi-2day wave activities during 2007 boreal summer period as revealed by Whole Atmosphere Community Climate Model".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.7(2016):7256-7268.

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来源：地质与地球物理研究所

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