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Jurnal Sains & Teknologi Modifikasi Cuaca
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 14 Documents
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Search results for , issue "Vol 17, No 2 (2016): December 2016" : 14 Documents clear
PREFACE JSTMC VOL.17 NO.2 DECEMBER 2016 : FOREWORD AND ACKNOWLEDGEMENT Wirahma, Samba
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 2 (2016): December 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.131 KB) | DOI: 10.29122/jstmc.v17i2.2803

Abstract

PERBANDINGAN PENGUKURAN RADIOMETER DAN RADIOSONDE PADA MUSIM HUJAN DI DRAMAGA BOGOR Athoillah, Ibnu; Dewi, Saraswati; Renggono, Findy
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 2 (2016): December 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.045 KB) | DOI: 10.29122/jstmc.v17i2.640

Abstract

IntisariBalai Besar Teknologi Modifikasi Cuaca (BB-TMC) BPPT bekerjasama dengan Badan Meteorologi Klimatologi dan Geofisika (BMKG) melakukan kegiatan Intensive Observation Period (IOP) selama puncak musim hujan pada tanggal 18 Januari - 16 Februari 2016 di wilayah Jabodetabek. Salah satu peralatan yang digunakan untuk observasi adalah Radiometer dan Radiosonde. Pada penelitian ini akan difokuskan bagaimana perbandingan hasil dari pengukuran Radiometer dan Radiosonde selama kegiatan IOP terutama untuk parameter temperatur dan kelembapan relatif. Hasil dari perbandingan pada profil atmosfer di lapisan tertentu terlihat adanya data yang mempunyai kecenderungan jauh dan tidak memiliki kedekatan nilai. Untuk pengukuran temperatur dengan radiometer jika dibandingkan dengan radiosonde, korelasi data semakin kecil di lapisan atas, sebaliknya jika untuk pengukuran kelembapan relatif, korelasi data di lapisan atas lebih tinggi daripada korelasi data di lapisan bawah. Sedangkan jika dibandingkan pada satu waktu antara radiometer dan radiosonde menunjukkan kecocokan untuk kedua data, meskipun kecocokan data kelembapan relatif lebih kecil dibandingkan data temperatur.  AbstractNational Laboratory for Weather Modification (BB-TMC) BPPT has colaborated with Meteorological Climatology and Geophysic Agency (BMKG) in conducting Intensive Observation Period (IOP) during the peak of rainy season in Jabodetabek area on January 18th- February 16th 2016. One of the tools used in the observation is Radiometer and Radiosonde. This study will focus on comparison result between Radiometer and Radiosonde measurement during IOP especially for temperature and relative humidity parameters. The result in a particular layer of profile atmosphere indicates that the data  tends to deviate away. The temperature difference measured using radiometer and radiosonde in the upper layer shows smaller value than that in the lower layer.  In contrast,  the correlation for relative humidity data in the upper layers is higher than in the lower layers. Meanwhile when compared at one time indicate a good match for both data, although the data matches of  the relative humidity are lower than the temperature data.  
ANALISIS PROFIL CAPE (CONVECTIVE AVAILABLE POTENTIAL ENERGY) SELAMA KEGIATAN INTENSIVE OBSERVATION PERIOD DI DRAMAGA BOGOR Muttaqin, Alfan; Muhammad, Fikri Nur; Abdillah, Purnomo Arif
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 2 (2016): December 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (554.506 KB) | DOI: 10.29122/jstmc.v17i2.1053

Abstract

IntisariProfil nilai CAPE(Convective Available Potential Energy) telah didapatkan dari analisis data Radiometer untuk wilayah Dramaga Kabupaten Bogor dan sekitarnya. Kegiatan pengamatan dilakukan dari tanggal 18 Januari ? 16 Februari 2016. Radiometer mampu mengamati profil atmosfer sampai level ketinggian 10 km. Dengan kemampuan tersebut maka kandungan air (Liquid Water Content), kelembaban relatif (RH) dan suhu bisa teramati sampai level atas. Hasil pengolahan dan analisis menunjukkan bahwa nilai CAPE, sesaat akan terjadi hujan, cenderung terlihat turun dan bernilai mendekati 0 (nol). Ketika terjadi hujan dengan instensitas sedang maka nilai CAPE turun perlahan dan mendekati 0 (nol), ketika terjadi hujan dengan instensitas ringan maka nilai CAPE turun namun tidak mendekati 0 (nol) dan nilai CAPE ketika hari tidak hujan cenderung tidak ada yang mendekati 0 (nol). Besarnya nilai CAPE tidak berpengaruh terhadap intensitas curah hujan. Pada saat hari terjadi hujan maka akan disertai terjadinya penurunan nilai CAPE karena tidak ada konveksi.  AbstractCAPE value profile has been obtained from the Radiometer data analysis for Dramaga region and its surrounding. Observation activities conducted from January 18th to February 16th, 2016. Radiometer can observe atmospheric profiles up to 10 km altitude level. With this capability, the water content (Liquid Water Content), Relative Humidity (RH) and temperature can be measured up to 10 km. The results of processing and data analysis shows that the value of CAPE, just before the rain occur, tends to decline and approaching 0 (zero). When it rains with moderate intensity the value of CAPE decrease slowly and close to 0 (zero), when it rains with light intensity CAPE values is decrease but not close to 0 (zero) and CAPE value when it is not rain, tends to not approaching 0 (zero). The CAPE value does not affect the rain intensity. When the rain occurred, the CAPE value has been decrease because there is no convection..
PEMANFAATAN DATA SATELIT GMS MULTI KANAL UNTUK KEGIATAN TEKNOLOGI MODIFIKASI CUACA Syaifullah, Muhamad Djazim; Nuryanto, Satyo
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 2 (2016): December 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.446 KB) | DOI: 10.29122/jstmc.v17i2.525

Abstract

IntisariTulisan ini menyajikan pemanfaatan data satelit GMS (Geostationary Meteorological Satellites) multi kanal untuk informasi perawanan dalam rangka mendukung kegiatan teknologi modifikasi cuaca. Pemanfaatan data satelit meliputi proses pengunduhan data, proses kalibrasi dan visualisasi citra satelit sehingga dapat diinterpretasi. Pemrosesan data satelit juga meliputi jenis dan tipe awan serta ukuran butir awan. Dengan diketahuinya tipe dan jenis awan maka pemilihan target awan dalam pelaksanaan Teknologi Modifikasi Cuaca (TMC) dapat lebih efektif. Data Satelit GMS yang berupa data PGM untuk berbagai kanal telah dimanfaatkan untuk analisis cuaca dan mendukung pelaksanaan kegiatan Teknologi Modifikasi Cuaca (TMC). Dari analisis beberapa kanal Infra Merah (IR) dapat diperoleh tipe/jenis awan dan ukuran butiran awan yang sangat bermanfaat untuk kepentingan Teknologi Modifikasi Cuaca. Diperlukan pengelolaan data yang lebih intensif baik manajemen data maupun kontinuitas pengunduhan data untuk menjamin kelancaran analisis. Selain itu juga diperlukan validasi lapangan misalnya dengan data radar analisis menjadi semakin akurat.  AbstractThis paper presents the utilization of GMS (Geostationary Meteorological Satellites) multichannel satellite data for cloud cover information in order to support the activities of weather modification technology or cloud seeding. These utilizations covering the process of data downloading, process calibration and visualization of satellite imagery so that it can be interpreted. Processing of satellite data also includes the type of cloud as well as cloud grain size. By knowing the type of cloud, the cloud target selection in the execution of Weather Modification Technology can be more effective. From the analysis of several Infrared (IR) channels can be obtained type/kind of cloud and grain size of the clouds that are beneficial to the interests of cloud seeding. It is required a more intensive data management and continuity of data download. It is also necessary field validation for example with radar data. The purpose of data management was the data processing became more efficient. 

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