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All Journal Edufisika: Jurnal Pendidikan Fisika Jurnal Widya Climago
Qothrunada, Dewi Tamara
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Humanities Education Physics Social Sciences Other

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EVALUASI DATA ESTIMASI CURAH HUJAN SATELIT TRMM 3B42 DENGAN DATA OBSERVASI DI KOLAKA TAHUN 2019 Satria WD, Hendri; Qothrunada, Dewi Tamara
EduFisika: Jurnal Pendidikan Fisika Vol 7 No 2 (2022): Edufisika: Jurnal Pendidikan Fisika Volume 7 Nomor 02 Desember 2022
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59052/edufisika.v7i2.20374

Abstract

Precipitation data in Indonesia is currently carried out by in situ observation, which allows for blank data due to observer errors or due to damaged equipment. The TRMM satellite is one of the satellites that is widely used to fill in the blank rainfall data in Indonesia. This study aims to determine the results of the accuracy between the TRMM 3B42 satellite rainfall estimation data and surface observation data sourced from the Sangia Ni Bandera Kolaka Meteorological Station in 2019. Both data were statistically tested using the correlation coefficient calculation method, error calculation using the Root Mean method Squared Error (RMSE), and significance test. The results showed that the best relationship was produced by dry months compared to wet months. In general, in the time series graph, the satellite data and observation data show a fairly similar fluctuation pattern, but in some cases the TRMM satellite data is much smaller than the observation data. The best time scale for the relationship between the two data is the basic time scale, because it produces significant results for all periods of the month, and has a high correlation value with a small error value.
TINJAUAN KLIMATOLOGIS KEJADIAN HUJAN DI MUSIM KEMARAU PADA DASARIAN I SEPTEMBER 2020 DI SULAWESI TENGGARA Qothrunada, Dewi Tamara; Risnayah, Siti
Jurnal Widya Climago Vol 2 No 2 (2020): Adaptasi Kebiasaan Baru
Publisher : Pusdiklat BMKG

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Abstract

In September, the Southeast Sulawesi region normally experiences a dry season. However, there are still rainevents with low to high intensity that occur in Southeast Sulawesi during the first decade of September 2020 (1-10 September). Rainfall that exceeds 100 millimeters in a decade in an area during the dry season indicates thatthere are significant weather disturbance factors that play a role in the formation of a large and extensiveconvective cloud system. Regional and local scale weather analyzes were conducted to identify weatherdisturbances that contributed to these events. Based on the results of monitoring rainfall observations,atmospheric dynamics data, and sea surface temperature, the rain event during the first decade of September2020 was an extreme event caused by disturbances in wind patterns around Kalimantan and Sulawesi, warmingsea surface temperatures in Indonesia and activate of weak La Nina, disturbance of easterly winds, and a fairly massive increase in air masses in the Southeast Sulawesi region. This rain event is also supported by the activeflow of cold wind (westerly wind) from mainland Asia in the upper layer.
Co-Authors Risnayah, Siti Satria WD, Hendri