Quasi 4 day mode observed by a boundary layer radar at Serpong (6 degrees S, 107 degrees E), Indonesia

Authors
Widiyatmi, I Yamanaka, MD Hashiguchi, H Fukao, S Tsuda, T Ogino, SY Harijono, SWB Wiryosumarto, H
Citation
I. Widiyatmi et al., Quasi 4 day mode observed by a boundary layer radar at Serpong (6 degrees S, 107 degrees E), Indonesia, J METEO JPN, 77(6), 1999, pp. 1177-1184
Citations number
14
Categorie Soggetti
Earth Sciences
Journal title
JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN
ISSN journal
00261165 → ACNP
Volume
77
Issue
6
Year of publication
1999
Pages
1177 - 1184
Database
ISI
SICI code
0026-1165(199912)77:6<1177:Q4DMOB>2.0.ZU;2-H
Abstract
A spectral analysis of lower tropospheric winds, observed by the Boundary L ayer Radar (BLR) at Serpong (6 degrees S, 107 degrees E) in West Java, Indo nesia during 1992/93, 1993/94, and 1994/95 rainy seasons reveals a pronounc ed spectral peak, at a period near 4 days. Filtered analysis of this quasi 4 day mode (Q4DM) shows almost an in-phase structure in the vertical. The G ANAL (Global Objective Analysis by Japan Meteorological Agency) data for 19 92/93 rainy seasons shows that in general the meridional wind component, at the altitude 700 hPa, has a westward phase propagation.