ANALISIS KONDISI ANGIN ZONAL DAN ANGIN MERIDIONAL LAPISAN 850 MB SAAT KEJADIAN ENSO SERTA DAMPAKNYA DI WILAYAH JAWA

Authors

  • Lisnawati Lisnawati Badan Meteorologi Klimatologi dan Geofisika
  • Farhan Dharmansyah Sekolah Tinggi Meteorologi Klimatologi dan Geofisika
  • Tomy B.A. Sihombing Badan Meteorologi Klimatologi dan Geofisika

Keywords:

zonal wind, meridional wind, ENSO, El Nino, La Nina

Abstract

El-Niño Southern Oscillation (ENSO) is phenomenon of interaction between ocean and atmosphere in Pacific Ocean that causes different pressure of them resulting in zonal and meridional wind currents. ENSO causes climate anomalies in Indonesia, such as changes of wind direction and speed. The aim of the research are to know the condition of zonal and meridional winds at 850 mb layer when ENSO and its impact for Northern of Java. Research using monthly wind vectors, zonal-meridional wind direction and velocity from January 1950-September 2016 and Ocean Niño Index. The methods are to compare zonal and meridional winds between ENSO with Neutral and analyze the impact for Java region. The results are when El-Niño, eastern wind is stronger than Neutral and western wind otherwise. Southern wind is stronger than Neutral and northern winds otherwise. When La-Niña, the eastern wind is weaker than Neutral and western wind otherwise. The Southern and Northern winds are weaker than Neutral. At 850 mb layer, wind speed when El-Niño is 2-6 m/s, La-Niña is 0-3 m/s, and Neutral is 0-4 m/s. The impact of El-Niño is visible in September-November. The influence of La-Niña is not visible because of the western winds strength.

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Published

2019-04-29

How to Cite

Lisnawati, L., Dharmansyah, F., & B.A. Sihombing, T. (2019). ANALISIS KONDISI ANGIN ZONAL DAN ANGIN MERIDIONAL LAPISAN 850 MB SAAT KEJADIAN ENSO SERTA DAMPAKNYA DI WILAYAH JAWA. Jurnal Meteorologi Klimatologi Dan Geofisika, 5(1), 9–17. Retrieved from https://jurnal.stmkg.ac.id/index.php/jmkg/article/view/63

Issue

Vol. 5 No. 1 (2018): Jurnal Meteorologi Klimatologi dan Geofisika

Section

Articles

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