### Abstract

Characteristics and sources of inertia-gravity waves are investigated using high-resolution radiosonde data observed at ten stations in Korea during 15 June to 15 July 2007. The wave analyses are performed in the lower stratospheric region (Z = 17-30 km). The average intrinsic frequency, vertical wavelength, and horizontal wavelength for the observed waves are 2.77f (where f is the Coriolis parameter), 2.58 km, and 620.11 km, respectively. The average eastward and westward momentum fluxes are 0.005 m^{2} s^{-2} and -0.003 m^{2} s^{-2}, respectively, and the average northward and southward momentum fluxes are 0.007 m^{2} s^{-2} and -0.002 m^{2} s^{-2}, respectively. To understand the propagation and the sources of the observed gravity waves, a three-dimensional ray-tracing model is used. The observed gravity waves are classified into two groups based on the existence of convection when and where the rays reach altitudes of 6-13 km. Sources are mostly located in the northeast and southeast of the observation stations below Z = 5 km for the convection-related cases (CONV), while those for the other cases (NCONV) are located in the northeast and southeast of the observation stations above Z = 20 km. The average intrinsic frequency and vertical wavelength of the CONV cases are somewhat larger than those of the NCONV cases. The average potential, kinetic, and total wave energies of the CONV cases are less than those of the NCONV cases.

Original language | English |
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Pages (from-to) | 261-277 |

Number of pages | 17 |

Journal | Asia-Pacific Journal of Atmospheric Sciences |

Volume | 46 |

Issue number | 3 |

DOIs | |

Publication status | Published - 2010 Aug 1 |

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### All Science Journal Classification (ASJC) codes

- Atmospheric Science

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*Asia-Pacific Journal of Atmospheric Sciences*, vol. 46, no. 3, pp. 261-277. https://doi.org/10.1007/s13143-010-1001-4

**Characteristics and sources of inertia-gravity waves revealed in the KEOP-2007 radiosonde data.** / Ki, Mi Ok; Chun, Hye-Yeong.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Characteristics and sources of inertia-gravity waves revealed in the KEOP-2007 radiosonde data

AU - Ki, Mi Ok

AU - Chun, Hye-Yeong

PY - 2010/8/1

Y1 - 2010/8/1

N2 - Characteristics and sources of inertia-gravity waves are investigated using high-resolution radiosonde data observed at ten stations in Korea during 15 June to 15 July 2007. The wave analyses are performed in the lower stratospheric region (Z = 17-30 km). The average intrinsic frequency, vertical wavelength, and horizontal wavelength for the observed waves are 2.77f (where f is the Coriolis parameter), 2.58 km, and 620.11 km, respectively. The average eastward and westward momentum fluxes are 0.005 m2 s-2 and -0.003 m2 s-2, respectively, and the average northward and southward momentum fluxes are 0.007 m2 s-2 and -0.002 m2 s-2, respectively. To understand the propagation and the sources of the observed gravity waves, a three-dimensional ray-tracing model is used. The observed gravity waves are classified into two groups based on the existence of convection when and where the rays reach altitudes of 6-13 km. Sources are mostly located in the northeast and southeast of the observation stations below Z = 5 km for the convection-related cases (CONV), while those for the other cases (NCONV) are located in the northeast and southeast of the observation stations above Z = 20 km. The average intrinsic frequency and vertical wavelength of the CONV cases are somewhat larger than those of the NCONV cases. The average potential, kinetic, and total wave energies of the CONV cases are less than those of the NCONV cases.

AB - Characteristics and sources of inertia-gravity waves are investigated using high-resolution radiosonde data observed at ten stations in Korea during 15 June to 15 July 2007. The wave analyses are performed in the lower stratospheric region (Z = 17-30 km). The average intrinsic frequency, vertical wavelength, and horizontal wavelength for the observed waves are 2.77f (where f is the Coriolis parameter), 2.58 km, and 620.11 km, respectively. The average eastward and westward momentum fluxes are 0.005 m2 s-2 and -0.003 m2 s-2, respectively, and the average northward and southward momentum fluxes are 0.007 m2 s-2 and -0.002 m2 s-2, respectively. To understand the propagation and the sources of the observed gravity waves, a three-dimensional ray-tracing model is used. The observed gravity waves are classified into two groups based on the existence of convection when and where the rays reach altitudes of 6-13 km. Sources are mostly located in the northeast and southeast of the observation stations below Z = 5 km for the convection-related cases (CONV), while those for the other cases (NCONV) are located in the northeast and southeast of the observation stations above Z = 20 km. The average intrinsic frequency and vertical wavelength of the CONV cases are somewhat larger than those of the NCONV cases. The average potential, kinetic, and total wave energies of the CONV cases are less than those of the NCONV cases.

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U2 - 10.1007/s13143-010-1001-4

DO - 10.1007/s13143-010-1001-4

M3 - Article

AN - SCOPUS:77956573318

VL - 46

SP - 261

EP - 277

JO - Asia-Pacific Journal of Atmospheric Sciences

JF - Asia-Pacific Journal of Atmospheric Sciences

SN - 1976-7633

IS - 3

ER -