Sources of concentric gravity waves generated by a moving mesoscale convective system in southern Brazil

Nyassor, Prosper K.; Wrasse, Cristiano M.; Paulino, Igo; São Sabbas, Eliah F. M. T.; Bageston, José V.; Naccarato, Kleber P.; Gobbi, Delano; Figueiredo, Cosme A. O. B.; Ayorinde, Toyese T.; Takahashi, Hisao; Barros, Diego

doi:https://doi.org/10.5194/acp-22-15153-2022

Articles | Volume 22, issue 23

https://doi.org/10.5194/acp-22-15153-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-15153-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 23

Research article

|

29 Nov 2022

Research article |

| 29 Nov 2022

Sources of concentric gravity waves generated by a moving mesoscale convective system in southern Brazil

Prosper K. Nyassor, Cristiano M. Wrasse, Igo Paulino, Eliah F. M. T. São Sabbas, José V. Bageston, Kleber P. Naccarato, Delano Gobbi, Cosme A. O. B. Figueiredo, Toyese T. Ayorinde, Hisao Takahashi, and Diego Barros

Data sets

MERRA-2 inst3_3d_asm_Np: 3d, 3-hourly, instantaneous, pressure-level, assimilation, assimilated meteorological fields V5.12.4 GMAO - Global Modeling and Assimilation Office https://doi.org/10.5067/WWQSXQ8IVFW8

Video supplement

Mesoscale Convective System on October 1 - 2, 2019 P. K. Nyassor and C. M. Wrasse https://doi.org/10.5446/56980

Short summary

This work investigates the sources of concentric gravity waves (CGWs) excited by a moving system of clouds with several overshooting regions on 1–2 October 2019 at São Martinho da Serra. The parameters of these waves were estimated using 2D spectral analysis and their source locations identified using backward ray tracing. Furthermore, the sources of these waves were properly identified by tracking the individual overshooting regions in space and time since the system of clouds was moving.