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Satria Ginanjar
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Astronomy Earth & Planetary Sciences Environmental Science Mathematics Physics

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KAJIAN PENGARUH SIKLON TROPIS MANGGA TERHADAP CURAH HUJAN, TRANSPOR EKMAN, VISKOSITAS EDDY DAN TINGGI GELOMBANG DI PERAIRAN SELATAN JAWA PADA 20-25 MEI 2020 Satria Ginanjar; Muhammad Fikry Syach; Siti Wulandari
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.193

Abstract

Tropical cyclone of Mangga formed on May, 20th – 25th 2020, located in southwest of Bengkulu, pricesly at coordinates of 9,8oS and 93,0oE over Indian Ocean Waters. This Cyclone does not cross Indonesia however can affect oceanographic parameters in Indonesia, notably on Southern Waters of Java . This study aims to determine changes in oceanographic parameters in the form of Ekman mass and volume transport, viscosity of Eddy and wave height during the Mangga Cyclone. The data used in reanalysis data extraction of surface wind direction and magnitude into wave height data, while Ekman transport and Eddy viscosity use combined surface wind data obtained from ERA5, also processed using IDL programming. The velocity of Mangga tropical cyclone became a tropical depression on May 19th 2020 was 14.07 m/s until its peak on May 20th, 2020 has maximum velocity at 14.07 m/s or 27.36 knots which has an impact on increasing Ekman transport velocity was 38,2 m2/s; Eddy’s mean viscosity was 23,36 m2/s; Rainfall mean was 165mm/day; and maximum wave height was 4.01 meters. These conditions also effect other oceanographic parameters and characteristic such as transformation of Eddy current patterns, upwelling events, and cooling sea surface temperatures (in combination with cloud cover effects) that occur during Mangga cyclone in the southern waters of Java.
KAJIAN KECEPATAN TRANSFER GAS KARBONDIOKSIDA (CO2) SAAT SIKLON TROPIS DI LAUT SELATAN JAWA SECARA KLIMATOLOGI PADA BULAN MARET, APRIL, MEI TAHUN 2008 HINGGA 2020 Ardiansyah Desmont Puryajati; Satria Ginanjar
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.202

Abstract

Tropical cyclones can move huge amounts of heat energy from oceans into atmosphere. The transfer of heat between oceans and atmospheres is related to the transfer of CO2 gas from oceans to atmospheres. Tropical cyclones affect the absorption of CO2 into atmosphere, where wind speed and sea surface temperatures play a role in the release of CO2 into atmosphere. The study examined how tropical cyclones affect the transfer of CO2 gas from oceans to atmosphere in the Southern sea of Java in the transition season 1, which is March, April, and May starting from 2008 to 2020. The method used in the form of analysis of atmospheric and ocean dynamics uses data components of wind speed direction u and v at altitude of 10 meters as well as sea surface temperature data. The data was obtained from the ERA5 reanalysis model which is the fifth generation of ECMWF. The maximum speed of monthly CO2 transfer in March was 150 m/s, in April at 122.3 m/s, and in May at 122.3 m/s. The climatology results show that the speed of CO2 transfer is maximum when a tropical cyclone occurs in March and at least in tropical cyclones that occur in May.
Co-Authors Ardiansyah Desmont Puryajati Muhammad Fikry Syach Siti Wulandari