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INDONESIA
Jurnal Sains & Teknologi Modifikasi Cuaca
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 12 Documents
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Search results for , issue "Vol 15, No 2 (2014): December 2014" : 12 Documents clear
SEBARAN PARTIKULAT (PM10) PADA MUSIM KEMARAU DI KABUPATEN TANGERANG DAN SEKITARNYA Sepriani, Khariza Dwi; Turyanti, Ana; Kudsy, Mahally
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 15, No 2 (2014): December 2014
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15476.793 KB) | DOI: 10.29122/jstmc.v15i2.2675

Abstract

Intisari   Pencemaran udara yang bersumber dari aktivitas antropogenik dewasa ini menjadi semakin meningkat seiring dengan berkembangnya sektor industri dan transportasi. Kabupaten Tangerang dan sekitarnya merupakan daerah industri besar di Indonesia, sehingga masyarakat di wilayah tersebut memiliki potensi terpapar pencemar udara yang tinggi. Salah satunya adalah partikulat.  Sebaran partikulat dipengaruhi oleh beberapa hal diantaranya jumlah sumber emisi, serta faktor meteorologi terutama angin. Pemantauan sebaran pencemar perlu dilakukan sebagai pertimbangan untuk mengambil kebijakan terkait masalah lingkungan. Namun pemantauan pencemar terkendala oleh biaya yang besar dan ketersediaan alat di lapangan, sehingga untuk memudahkan melakukan pemantauan digunakan model sebaran pencemar. Penelitian ini bertujuan untuk mengetahui arah sebaran pencemar PM10 di wilayah Kabupaten Tangerang dan sekitarnya berdasarkan arah angin pada musim kemarau. Metode dalam penelitian ini menggunakan model Chimere yang dapat menghasilkan prakiraan pencemar udara harian, termasuk aerosol dan polutan lain. Hasil analisis menunjukkan konsentrasi PM10 tinggi di daerah sekitar Kotamadya Tangerang. Banyaknya industri dan padatnya kendaraan bermotor serta angin dominan yang menuju timur pada musim kemarau menyebabkan konsentrasi PM10 di Kota Tangerang Selatan hingga Kota Tangerang lebih tinggi daripada di sekitarnya, yakni mencapai 26-28 ?g m-3. Nilai korelasi antara kecepatan angin dan konsentrasi partikulat sebesar -0.46 menunjukkan kecepatan angin cukup mempengaruhi tingkat konsentrasi PM10.   Abstract  Air pollution originating from anthropogenic activities nowadays be increased along with industry development and transportation sector. Tangerang District and its surrounding areas are a large industrial area in Indonesia, so people in the region have a high potential for exposure to air pollutant. Particulate is one of the pollutions. Monitoring the pollutant dispersion is necessary to be conducted as a consideration to take a policy related to environmental issues. However, pollutant monitoring constrained by cost and availability of tools in the field, so the model is used to make pollutant monitoring easier. This study aims to determine the direction of PM10 pollutant dispersion in Tangerang  and the surrounding area based the dominant wind direction in the dry season. The method in this study uses Chimere model that can generate daily air pollution forecast. Result shows high PM10 concentration around Tangerang City. High number of industries and vehicles and also the dominant winds eastward in the dry season led to a concentration of PM10 in Tangerang City until South Tangerang City higher than around, namely reached 26-28 ?g m-3. Correlation value between wind speed and particulate concentration is -0.46 indicated that the wind speed has considerable influence the level of PM10 concentrations.
APLIKASI MOBILE ZAPPELINE SEBAGAI MEDIA TEKNOLOGI MODIFIKASI CUACA (TMC) DAN PENIPISAN POLUTAN UDARA (ASAP) Purwadi, Purwadi; Sunarto, Faisal; Muttaqin, Alfan; Seto, Tri Handoko
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 15, No 2 (2014): December 2014
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7832.013 KB) | DOI: 10.29122/jstmc.v15i2.2671

Abstract

IntisariTelah dilakukan kajian aplikasi mobile zappeline sebagai media teknologi modifikasi cuaca (tmc) dan media penipisan polutan udara (asap) pada sebuah truk Mitsubishi Colt Diesel berukuran 5,960 x 1,970 meter. Dengan kendaraan tersebut, direkomendasikan dimensi zappeline berbentuk bangun ruang eliptical dengan jari-jari diagonal a dan b masing-masing 3,25 dan 0,65 meter. Selanjutnya, karakteristik aerodinamik dan fisika dihitung dengan memecahkan beberapa persamaan fisika secara numerik pada kondisi atmosfer standart yaitu internasional standart of atmosphere (ISA). Pada kondisi standart ISA, maksimal beban pada ketinggian 1500 meter (5000 feet) sebesar 5,67 kg dan mampu mencapai ketinggian tersebut dalam waktu 1221.93 sekon (+/- 20 menit). Selanjutnya dilakukan perhitungan drag zappeline relatif terhadap udara yang disajikan dalam sebuah grafik yang dapat digunakan bahan pertimbangan dalam desain pendorong zappeline dan perhitungan kekuatan tali.   AbstractStudies of mobile zeppeline aplication as a medium of weather modification technology and media thinning air pollutants (smoke) on a Mitsubishi Colt Diesel truck with dimensions of 5,960 x 1,970 meters have been done. With these vehicles, an elliptical zappeline shape geometry are recommended with diagonal radii a and b, 3.25 and 0.65 meters, respectively. Then, the aerodynamics and physics characteristic are calculated by solving some physics equations numerically at standard atmospheric conditions of the international standard atmosphere (ISA). In the ISA standard conditions, the maximum load at 1500 meters altitude (5000 feet) is 5.67 kg and it is capable to reach that altitude in 1221.93 seconds (+/- 20 minutes). Furthermore, calculation of the air drag relative are presented in a graph that can be used in the design considerations of driving force zappeline and calculation of rope tension.  

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