Premium
Modulation of station rainfall over the western Pacific by the Madden‐Julian oscillation
Author(s) -
Matthews Adrian J.,
Li Hoi Yee Yvonne
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023595
Subject(s) - madden–julian oscillation , climatology , anomaly (physics) , environmental science , satellite , oscillation (cell signaling) , atmospheric sciences , meteorology , geology , geography , convection , physics , condensed matter physics , biology , genetics , astronomy
Rainfall data from 140 stations in the PACRAIN network in the tropical western Pacific are analysed to assess the signal due to the Madden‐Julian oscillation (MJO). During northern winter, the station rainfall difference between the wet and dry phases of the MJO is up to 6 mm day −1 , compared to the climatological mean value of 12 mm day −1 . The anomalies have a strong spatial coherence, with over 80% of the individual point station anomalies having the same sign as the large‐scale rainfall anomaly, as determined by the mainly satellite‐derived CMAP rainfall product.