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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 566 Documents
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ANALISIS CUACA PADA PENERAPAN TEKNOLOGI MODIFIKASI CUACA DI DAS PLTA Ir. PM NOOR BULAN APRIL - MEI 2017 Abdillah, Purnomo Arif; Syaifullah, Djazim; Mariana Sibarani, Rini
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 2 (2017): December 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1309.327 KB) | DOI: 10.29122/jstmc.v18i2.2784

Abstract

Intisari Pelaksanaan Teknologi Modifikasi Cuaca (TMC) di DAS PLTA Ir PM Noor dilakukan pada tanggal 18 April sampai 17 Mei 2017. Kondisi cuaca selama pelaksanaan kegiatan TMC dipengaruhi oleh adanya fenomena ENSO Netral dengan adanya kemungkinan menuju Nino lemah, sedangkan nilai anomali OLRnya lebih dominan negatif. Massa udara yang masuk daerah target didominasi massa udara yang berasal dari Lautan Pasifik  Barat dan Laut Banda yang cukup mengandung uap air, kondisi kelembapan udara di wilayah Kalimantan Selatan cukup basah dan terdapat daerah konvergensi yang mendukung terjadinya pertumbuhan awan. Total rata-rata curah hujan wilayah di DAS PLTA Ir. PM Noor selama periode pelaksanaan TMC adalah sebesar 205,7 mm.  AbstractThe implementation of Weather Modification Technology in the Ir. PM Noor hydroelectric plant catchment area was conducted on 18 April to 17 May 2017. Weather conditions during the implementation of weather modification are influenced by the phenomenon of neutral ENSO condition with the possibility to Nino weak, while the value of the OLR anomaly is more dominantly negative. The air mass that entering the target area is dominated from the West Pacific Ocean and Banda Sea which contains enough moisture, the humidity conditions in South Kalimantan are quite wet and there is a convergence area that supports the occurrence of cloud growth. Total average rainfall in the Ir. PM Noor hydroelectric plant catchment area during the weather modification implementation period is 205.7 mm.  
PENYEBARAN POLUTAN DALAM KASUS KEBAKARAN HUTAN DAN LAHAN DI SUMATERA SELATAN TAHUN 2015 Mulyana, Erwin
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 2 (2017): December 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.46 KB) | DOI: 10.29122/jstmc.v18i2.2611

Abstract

IntisariKebakaran hutan dan lahan di Sumatera Selatan tahun 2015 menimbulkan bencana kabut asap yang sangat masif sehingga kualitas udara dalam beberapa hari mencapai kategori berbahaya. Dalam tulisan ini dibahas penyebaran polutan di wilayah Sumatera Selatan akibat kebakaran hutan dan lahan yang terjadi di wilayah tersebut. Data yang digunakan dalam penelitian ini adalah data hotspot dari satelit MODIS dengan tingkat kepercayaan 70 %, curah hujan TRMM serta curah hujan dari penakar yg ada di Sumatera Selatan,data kualitas udara (ISPU), data black carbon dari MERRA-2 Model M2T1NXAER v5.12.4. dengan resolusi 0.5o x 0.625o, serta arah dan kecepatan angin lapisan 925 mb. Analisis spasio temporal penyebaran black carbon yang dipadukan dengan arah dan kecepatan angin menggunakan perangkat lunak Grid Analysis and Display System (GrADS). Intensitas hujan dari 16 penakar hujan sejak minggu kedua bulan Agusus 2015 hingga akhir Oktober 2015 sebesar 36 mm. Selama bulan Juni-November 2015, Jumlah hotspot terbanyak terjadi pada bulan September (6.839 titik) dan Oktober (7.709 titik). Lokasi hotspot sebagian besar berada di Kabupaten OKI dengan jumlah mencapai 10.581 titik. Kualitas udara pada bulan September 2015 dominan masuk kategori tidak sehat sedangkan bulan Oktober 2015 dominan masuk kategori sangat tidak sehat – berbahaya. Angin pada lapisan 925 mb umumnya bertiup dari arah tenggara hingga timur sehingga black carbon dari kebakaran di daerah OKI menyebar ke arah wilayah Kabupaten Musi Banyuasin serta Kabupaten Banyuasin.  AbstractIn 2015, Forest and Land fires inflict serious and massive smoke disaster so that air quality in several days laid in dangerous category. This paper discussed pollutant dispersed in South Sumatera due to forest and land fire in this area. Data that used in this paper were MODIS satellite hotspot data with 70 % confidence level, rainfall from TRMM satellite and from ground observation at South Sumatera, Air quality data (ISPU), MERRA-2 Model M2T1NXAER v5.12.4 black carbon data, also wind direction and speed at 925 mb height. Spatio temporal analysis of black carbon dispersion combined with wind speed and direction using Grid Analysis and Display System (GrADS) software. Rain intensity from 16 rainfall gauge since week two of August 2015 until end of October 2015 was 36 mm. During June-November 2015, the number on highest hotspot observed was in September (6.839) and October (7.709). Hotspot location mainly in OKI district as much as 10.581. Air quality in September 2015 mainly laid in unhealthy category, meanwhile in October 2015 laid mainly stated as unhealthy to dangerous. Wind at 925 mb height generally came from South East and East so black carbon came from fires at OKI district dispersed to Musi Banyuasin and Banyuasin district. 
Preface JSTMC Vol.18 No.1 June 2017 : Foreword and Acknowledgement Wirahma, Samba
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 1 (2017): June 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.427 KB) | DOI: 10.29122/jstmc.v18i1.2805

Abstract

VARIASI HARIAN DAN TAHUNAN HUJAN DI SERPONG BERDASARKAN PENGAMATAN DENGAN MICRO RAIN RADAR Renggono, Findy
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 2 (2017): December 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.178 KB) | DOI: 10.29122/jstmc.v18i2.2785

Abstract

IntisariKemampuan MRR untuk mengamati profil hujan sampai ketinggian di atas 7500m dapat digunakan untuk mengamati kemunculan jenis hujan. Dari parameter yang diperoleh dapat dibedakan menjadi dua jenis hujan, konvektif dan stratiform berdasarkan keberadaan brightband. Pengamatan kemunculan jenis hujan dengan MRR di Serpong menunjukkan bahwa hujan konvektif relatif muncul lebih banyak dibandingkan stratiform pada puncak musim kering, sedangkan pada musim hujan sebaliknya. Untuk variasi hariannya, puncak hujan konvektif muncul sekitar pukul 15.00-16.00 WIB sedangkan stratiform sekitar pukul 18.00 WIB.  AbstractThe ability of micorain radar to observe precipitation profiles up to 7500m height can be used to observe the precipitation types. Precipitation can be classified into two types of rain, convective and stratiform based on the existence of brightband. MRR observation in Serpong shows that convective rain relatively appears more than stratiform rain during the peak of the dry season, while in the rainy season vice versa. For daily variations, the peak of the convective rain appears at about 15.00-16.00 LT while the stratiform is around 18.00 LT. 
Appendix JSTMC Vol.17 No.1 June 2016 : Author Index & Keyword Index Wirahma, Samba
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 1 (2016): June 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.272 KB) | DOI: 10.29122/jstmc.v17i1.2802

Abstract

Appendix JSTMC Vol.17 No.2 December 2016 : Author Index & Keyword Index 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 (150.531 KB) | DOI: 10.29122/jstmc.v17i2.2804

Abstract

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

Preface JSTMC Vol.17 No.1 June 2016 : Foreword and Acknowledgement Wirahma, Samba
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 17, No 1 (2016): June 2016
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (94.867 KB) | DOI: 10.29122/jstmc.v17i1.2801

Abstract

Preface JSTMC Vol.18 No.2 December 2017 : Foreword and Acknowledgement Wirahma, Samba
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 2 (2017): December 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.571 KB) | DOI: 10.29122/jstmc.v18i2.2807

Abstract

PENGARUH MADDEN-JULIAN OSCILLATION TERHADAP DISTRIBUSI TEMPORAL DAN PROPAGASI HUJAN BERDASARKAN PENGAMATAN RADAR CUACA (Studi Kasus : Intensive Observation Period 2016 di Wilayah Jakarta dan Sekitarnya) Arbain, Ardhi Adhary; Renggono, Findy; Yahya, Rino Bahtiar
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 18, No 2 (2017): December 2017
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (709.371 KB) | DOI: 10.29122/jstmc.v18i2.2058

Abstract

IntisariDistribusi temporal dan propagasi hujan selama Intensive Observation Period 2016 (IOP 2016, 18 Januari – 16 Februari 2016) di wilayah Jakarta dan sekitarnya dianalisis berdasarkan rataan longitudinal dan latitudinal data Constant Altitude Plan Position Indicator (CAPPI) radar cuaca, pada periode sebelum, saat dan sesudah fase aktif Madden-Julian Oscillation (MJO). Hasil analisis menunjukkan bahwa distribusi temporal hujan berkurang secara signifikan pada periode MJO aktif dan sesudah MJO, terutama pada dini hari. Di sisi lain, intensitas hujan semakin meningkat dengan nilai rata-rata di atas 30 mm/jam pada periode setelah MJO. Pada komponen zonal, arah propagasi hujan umumnya dominan dari barat ke timur pada ketiga periode analisis, sedangkan untuk komponen meridional, terdapat variasi yang cukup signifikan pada periode saat dan setelah MJO aktif . Pergerakan hujan dari selatan ke utara pada kedua periode tersebut menunjukkan pengaruh siklus diurnal yang semakin kuat dibandingkan pengaruh monsun, setelah MJO melintasi wilayah barat Benua Maritim Indonesia.   AbstractTemporal distribution and propagation of rainfall during Intensive Observation Period 2016 campaign (IOP 2016, January 18 – February 16, 2016) in Jakarta and surrounding area were investigated based on the longitudinal dan latitudinal averages of Constant Altitude Plan Position Indicator (CAPPI) dataset of weather radar, during the active Madden-Julian Oscillation (MJO) phase, as well as, pre-MJO and post-MJO periods. The results show a significant decrease of rainfall temporal distribution during the active MJO and post-MJO periods, particularly in the early morning, meanwhile, the rainfall intensity shows significant increase, with the averages of more than 30 mm/hr during the post-MJO period. On the zonal component, the rainfall mostly has eastward propagation for all period while having more significant variations on the meridional component during the active and post-MJO periods. Northward rainfall propagation during the active and post-MJO periods indicates the strengthen effect of diurnal cycle over monsoon after the MJO passed by the western part of Indonesian Maritime Continent.  

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