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The gravity wave is the fundamental dynamic process in the atmosphere, and one of the important theoretical studies of atmosphere dynamics is to estimate the gravity wave parameters. Due to the inherent deficiency of the curve fitting method for the vertical perturbation profile (VPP), a new method is proposed in obtaining the profile for estimating the reasonable gravity wave parameters. Based on the features of cone of influence in wavelet transformation and its maximum value, which is considered as the critical value for background profile and perturbation profile, the VPP is obtained with a 10th-order Butter Worth highpass filter for the signal with the magnitude less than the critical value. With the Morlet wavelet and Fourier power spectrum analyses for the numerically simulated zonal wind and meridional wind, it is found that there are neither distinct background signals nor false signal including in the VPPs, which overcomes the deficiency of curve fitting method. Therefore, the proposed method is excellent compared with the widely used curve fitting method in obtaining the VPPs, and the reasonable atmosphere gravity wave parameters could be estimated with the new method.
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Keywords:
- atmosphere gravity wave parameters /
- vertical perturbation profiles /
- morlet wavelet transform /
- Butter Worth filter
[1] Wang L, Greller M A, Alexander M J 2005 J. Atmos. Sci. 62 125
[2] Zhang S D, Yi F, Huang C M, Chen Z Y 2008 Ann. Geographys. 26 2005
[3] Zhang S D, Yi F, Huang C M, Zhou Q 2010 Ann. Geophys. 28 1065
[4] Dutta G, Ajay Kumar M C, Vinay K P, Ratnam M V, Chandrashekar M, Shibagaki Y, Salauddin M, Basha H A 2009 J. Geophys. Res. 114 D18
[5] Ki M O, Chun H Y 2010 Asia-Pacific Journal of Atmospheric Sciences 46 261
[6] Wang L, Fritts D C, Williams B P, Goldberg R A, Schmidlin F J, Blum U 2006 Ann. Geophys. 24 1209
[7] Tateno S, Sato K 2008 J. Meteor. Soc. Japan 85 719
[8] Yamamori M, Sato K 2006 J. Geophys. Res. 111 D16110
[9] Yoshiki M, Kizu N, Sato K 2004 J. Geophys. Res. 109 D23104
[10] Deng Y, Shi W K, Liu Q 2002 Acta Phys. Sin. 51 759 (in Chinese) [邓勇, 施文康, 刘琪 2002 物理学报 51 759]
[11] Deng Y Q, Cao S Y, Yu J, Xu T, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7017 (in Chinese) [邓玉强, 曹士英, 于靖, 徐涛, 王清月, 张志刚 2008 物理学报 57 7017]
[12] Ren L, Chen X G, Liu C T 2009 Acta Phys. Sin. 58 2035 (in Chinese) [任磊, 陈祥光, 刘春涛 2009 物理学报 58 2035]
[13] Zhao W S, He Y G 2009 Acta Phys. Sin. 58 843 (in Chinese) [赵文山, 何怡刚 2009 物理学报 58 843]
[14] Torrence C, Compo G P 1998 Bull. Amer. Meteor. Soc. 79 61
[15] Jevrejeva S, Moore J C, Grinsted A 2003 J. Geophys. Res. 108 4677
[16] Grinsted A, Moore J C, Jevrejeva S 2004 Nonlinear Processes in Geophysics 11 561
[17] Hong S Y, Dudhia J, Chen S H 2004 Mon. Wea. Rev. 132 103
[18] Hong S Y, Lim J O J 2006 J. Korean Meteor. Soc. 42 129
[19] Kain J S 2004 J. Appl. Meteor. 43 170
[20] Grell G A, Devenyi D 2002 Geophys. Res. Lett. 29 1693
[21] Mlawer E J, Taubman S J, Brown P D, Iacono M J, Clough S A 1997 J. Geophys. Res. 102 16663
[22] Dudhia J 1989 J. Atmos. Sci. 46 3077
[23] Beljaars A C M 1994 Quart. J. Roy. Meteor. Soc. 121 255
[24] Chen F, Dudhia J 2001 Mon. Wea. Rev. 129 569
[25] Janjic Z I 2002 NCEP Office Note. 437 61
[26] Hines C O 1989 J. Atmos. Sci. 46 476
[27] Eckermann S D, Hocking W K 1989 J. Geophys. Res. 94 6333
[28] Eckermann S D, Vincent R A 1989 Pure Appl. Geophys. 130 509
[29] Gossard E E, Hooke W H 1975 Waves in the Atmosphere (New York: Elsevier Science) p456
[30] Vincent R A, Fritts D C 1987 J. Atmos. Sci. 44 748
[31] Eckermann S D 1996 J. Geophys. Res. 101 19169
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[1] Wang L, Greller M A, Alexander M J 2005 J. Atmos. Sci. 62 125
[2] Zhang S D, Yi F, Huang C M, Chen Z Y 2008 Ann. Geographys. 26 2005
[3] Zhang S D, Yi F, Huang C M, Zhou Q 2010 Ann. Geophys. 28 1065
[4] Dutta G, Ajay Kumar M C, Vinay K P, Ratnam M V, Chandrashekar M, Shibagaki Y, Salauddin M, Basha H A 2009 J. Geophys. Res. 114 D18
[5] Ki M O, Chun H Y 2010 Asia-Pacific Journal of Atmospheric Sciences 46 261
[6] Wang L, Fritts D C, Williams B P, Goldberg R A, Schmidlin F J, Blum U 2006 Ann. Geophys. 24 1209
[7] Tateno S, Sato K 2008 J. Meteor. Soc. Japan 85 719
[8] Yamamori M, Sato K 2006 J. Geophys. Res. 111 D16110
[9] Yoshiki M, Kizu N, Sato K 2004 J. Geophys. Res. 109 D23104
[10] Deng Y, Shi W K, Liu Q 2002 Acta Phys. Sin. 51 759 (in Chinese) [邓勇, 施文康, 刘琪 2002 物理学报 51 759]
[11] Deng Y Q, Cao S Y, Yu J, Xu T, Wang Q Y, Zhang Z G 2008 Acta Phys. Sin. 57 7017 (in Chinese) [邓玉强, 曹士英, 于靖, 徐涛, 王清月, 张志刚 2008 物理学报 57 7017]
[12] Ren L, Chen X G, Liu C T 2009 Acta Phys. Sin. 58 2035 (in Chinese) [任磊, 陈祥光, 刘春涛 2009 物理学报 58 2035]
[13] Zhao W S, He Y G 2009 Acta Phys. Sin. 58 843 (in Chinese) [赵文山, 何怡刚 2009 物理学报 58 843]
[14] Torrence C, Compo G P 1998 Bull. Amer. Meteor. Soc. 79 61
[15] Jevrejeva S, Moore J C, Grinsted A 2003 J. Geophys. Res. 108 4677
[16] Grinsted A, Moore J C, Jevrejeva S 2004 Nonlinear Processes in Geophysics 11 561
[17] Hong S Y, Dudhia J, Chen S H 2004 Mon. Wea. Rev. 132 103
[18] Hong S Y, Lim J O J 2006 J. Korean Meteor. Soc. 42 129
[19] Kain J S 2004 J. Appl. Meteor. 43 170
[20] Grell G A, Devenyi D 2002 Geophys. Res. Lett. 29 1693
[21] Mlawer E J, Taubman S J, Brown P D, Iacono M J, Clough S A 1997 J. Geophys. Res. 102 16663
[22] Dudhia J 1989 J. Atmos. Sci. 46 3077
[23] Beljaars A C M 1994 Quart. J. Roy. Meteor. Soc. 121 255
[24] Chen F, Dudhia J 2001 Mon. Wea. Rev. 129 569
[25] Janjic Z I 2002 NCEP Office Note. 437 61
[26] Hines C O 1989 J. Atmos. Sci. 46 476
[27] Eckermann S D, Hocking W K 1989 J. Geophys. Res. 94 6333
[28] Eckermann S D, Vincent R A 1989 Pure Appl. Geophys. 130 509
[29] Gossard E E, Hooke W H 1975 Waves in the Atmosphere (New York: Elsevier Science) p456
[30] Vincent R A, Fritts D C 1987 J. Atmos. Sci. 44 748
[31] Eckermann S D 1996 J. Geophys. Res. 101 19169
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