| Full text | |
| Author(s): |
Raphaldini, B.
[1, 2]
;
Teruya, A. S. W.
[1]
;
Raupp, C. F. M.
[1]
;
Silva-Dias, P. L.
[1]
;
Takahashi, D. Y.
[3]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci, Rua Matao 1226, Cidade Univ, Sao Paulo, SP - Brazil
[2] Univ Durham, Dept Math Sci, Stockton Rd, Durham DH1 3LE - England
[3] Brain Inst, Av Nascimento Castro 2155, BR-59056450 Natal, RN - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | European Physical Journal-Special Topics; v. 230, n. 14-15, p. 3009-3017, OCT 2021. |
| Web of Science Citations: | 2 |
| Abstract | |
The complex network approach has proved to be a valuable tool for climate and atmospheric sciences in recent years. Here, we show an application of causality ideas in complex networks to infer properties of equatorial wave interactions associated with the Madden-Julian Oscillation (MJO), the dominant component of the atmospheric system on intraseasonal timescales in the equatorial region. We use the normal mode function approach to obtain the time series of baroclinic Kelvin and Rossby mode energies, since both of these wave modes are known to play an important role in the MJO dynamics. The partial directed coherence method reveals the structure of the interaction among those modes and shows that the Kelvin mode is the main driver of the MJO system, transferring energy to the Rossby modes. Investigation on the Kelvin mode information source might help evaluating the state-of-the-art of MJO theories. (AU) | |
| FAPESP's process: | 17/23417-5 - Paleoclimatic variability of South Atlantic Convergence Zone and processes in the Atlantic and Pacific Oceans: Last Glacial, Middle Holocene and Last Millennium |
| Grantee: | Breno Raphaldini Ferreira da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/50122-0 - Dynamic phenomena in complex networks: basics and applications |
| Grantee: | Elbert Einstein Nehrer Macau |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/50686-1 - Paleo-constraints on monsoon evolution and dynamics |
| Grantee: | Pedro Leite da Silva Dias |
| Support Opportunities: | Research Projects - Thematic Grants |