ANALISIS ANGIN ZONAL DI INDONESIA SELAMA PERIODE ENSO
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Abstract
bulanan angin zonal dari National Center Environmental Prediction / National Center for Atmospheric Research (NCEP/NCAR) reanalisys grid data (2.5 x 2.5 ) pada ketinggian
850 mb selama periode tahun 1961 sampai dengan 1993. Berdasarkan rata -rata tiga
bulanan diperoleh bahwa pada tahun El Nino terjadi penguatan angin timuran pada MAM
dan SON. Sementara pada JJA angin timuran yang berhembus di wilayah Indonesia
terutama di sebelah selatan equator tidak mengalami perubahan berarti. Sedangkan
pada DJF angin baratan yang berhembus di wilayah Indonesia sebelah selatan equator
kecepatannya melemah.
The zonal wind (850 mb) over Indonesia have been analyzed for period 1961-1993.
Intensified easterly wind during El Nino years over Indonesia mainly in the south of
equator region found in MAM and SON. During JJA the easterly wind remain constant in
both El Nino years and La Nina years. During DJF, westerly wind in El Nino years decreases over Indonesia mainly in the south of equator.
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