Open AccessImplication of Madden–Julian Oscillation phase on the Eastern Amazon climate
Author(s) -
de Oliveira Juarez Ventura,
Vitorino Maria Isabel,
de Abreu Sá Leonardo Deane
Publication year - 2015
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl2.560
Subject(s) - madden–julian oscillation , amazon rainforest , climatology , environmental science , oscillation (cell signaling) , phase (matter) , atmospheric sciences , geography , meteorology , geology , physics , biology , ecology , convection , genetics , quantum mechanics
The Student's t ‐test was used to statistically prove the existence of a significant difference between mean values of several meteorological variables for the active and inactive phases of the Madden–Julian Oscillation ( MJO ) in the Eastern Amazon. The wavelet transform was used to identify 14 cases of the MJO occurrence, in which the analyses were performed. The analysis shown that the variables influenced by the convection such as outgoing longwave radiation, mean and maximum temperature, and insolation presented differences, between each MJO phase, at significance levels of 95% or higher.