moteki mjo seminar-150401 hypothesis on eastward propagation mechanism of the mjo
TRANSCRIPT
MJO東進機構
の仮説
茂木耕作
の
MJOの東進機構の概念図
正規化した偏差の定義
normalized anomaly = X − 30daysX30daysσ
変動の緯度依存性を除去
北半球の低圧偏差
赤道域の低圧偏差の東進
南半球の低圧偏差の東進
MJOの南北構造
ZA:RH UA:U
西部中心部
ZA:RH
西部
中心部
UA:U
西部
中心部
MJOの東進機構の概念図
MJO西部の南北構造
MJO中心部の南北構造
惑星規模中緯度ロスビー波
惑星規模中緯度ロスビー波
東西風収束と西風偏差
低気圧偏差
Anti-symmetric features of the October MJO
during CINDY2011
Qoosaku MOTEKI(the JMSJ article under review)
suppressed
just before onset
just after onset
mature
suppressed
just before onset
just after onset
mature
Period separation based on the schematic illustration from Madden and Julian (1976)
suppressed
just before onset
just after onset
mature
eastward propagating
Period separation based on the schematic illustration from Madden and Julian (1976)
suppressed
just before onset
just after onset
mature
eastward propagating
Convective area separation based on features during each period
suppressed
just before onset
just after onset
mature
eastward propagating
WPDSCCWC
Transition from double-ITCZ to MJO in the time-latitude cross section
suppressed just before onset
just after onset
mature eastward propagating
Transition from double-ITCZ to MJO as weakening the Mascarene High
suppressed
just before onset
just after onset
mature
suppressed
just before onset
just after onset
mature
