Jurnal Meteorologi Klimatologi dan Geofisika 2019-10-28T11:28:24+00:00 Dr. Deni Septiadi Open Journal Systems <p><strong>Jurnal Meteorologi Klimatologi dan Geofisika (Jurnal MKG)</strong> merupakan jurnal ilmiah sebagai sarana komunikasi untuk melaporkan hasil penelitian bidang ilmu meteorologi, klimatologi, kualitas udara, geofisika, lingkungan, kebencanaan, dan instrumentasi yang terkait. Jurnal ilmiah ini diterbitkan setiap tiga bulan sekali dalam setahun.</p> <p>This journal does not charge APCs or submission charges.</p> KAJIAN PERTUMBUHAN AWAN HUJAN PADA SAAT BANJIR BANDANG BERBASIS CITRA SATELIT DAN CITRA RADAR (STUDI KASUS : PADANG, 2 NOVEMBER 2018) 2019-10-28T11:13:39+00:00 Abdul Hamid Al Habib Yoga Wahyu Pradana Dany Pangestu Paulus Agus Winarso Jusa Sujana <p><em>A massive flood again hit six sub-districts in the city of Padang, West Sumatra on November 2, 2018. Floods were caused by river debris which overflowed due to heavy rainfall that occurred in the upstream and downstream. The impact of the flash floods caused 600 houses to be flooded, 3 bridges broke up and claimed lives. Because of this impact, this research was conducted to review the condition of sea surface temperature, mslp, water vapor transport value, streamline, Himawari-8 satellite and C-Band weather radar image data. The data was processed in the form of graphs and spatial maps then descriptive analysis was carried out which included temporal analysis and spatial analysis. Based on the results of the analysis, regional weather disruption in the form of a shearline pattern or component of the direction of the wind trajectory that changes suddenly which is parallel to horizontal wind and low pressure areas that cause convergence in the coastal city of Padang , then the value of water vapor transport is quite high, namely the range between 700-1100 Kg / ms</em><em><sup>-1</sup></em><em>&nbsp;in layers 1000-300 mb. The occurrence of heavy rains is often related to the presence of Cumulonimbus (Cb) clouds. This is due to the characteristics of Cb clouds with large dimensions and contain many particles of precipitation such as water and ice crystals. This condition is supported by the presence of Cb cloud based on the analysis of the Himawari-8 time series satellite images and the radar reflectivity value at a value of 45-60 dBz. On November 2, 2018, almost all of the rain clouds that appeared had a thickness &nbsp;&nbsp;&nbsp;of more than 7 km, where the lowest cloud peak temperature reached a value of -72.5 ° C.</em></p> 2019-09-13T09:40:27+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika POTENSI PANAS LAUT SEBAGAI ENERGI BARU TERBARUKAN DI PERAIRAN PAPUA BARAT DENGAN METODE OCEAN THERMAL ENERGY CONVERSION (OTEC) 2019-10-28T11:23:32+00:00 Erlita Aprilia Althaf Aini Ayu Frakusya Agus Safril <p>Electrical energy is something that is needed in the continuation of human life. The need for electrical energy is increasing from time to time new innovations are purchased to produce environmentally friendly energy. Sea Heat Energy Conversion (OTEC) is a method to produce electrical energy using the temperature difference between the deep sea and the surface with a minimum temperature difference of 20 ° C to run a heat engine. West Papua is one of the provinces in Indonesia with electrification that is still low. The location of Indonesia in the tropics with differences in the temperature of sea water which has great potential to use the OTEC method in producing electricity. This study discusses to study the potential use of OTEC in Papua. The data used are data on the temperature of the deep sea surface and the period of 1955 - 2012 at twelve points in the waters around West Papua. The data was obtained from the World Ocean Atlas 2013 which was then processed using data software and Ocean Data View (ODV). The results of data processing obtained the greatest efficiency value of 7.67% and excess of 7.21%</p> 2019-09-13T09:43:14+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika PENENTUAN STRATIGRAFI KECEPATAN GELOMBANG GESER (VS) DI DAERAH RAWAN ABRASI KABUPATEN BENGKULU UTARA MENGGUNAKAN METODE MULTICHANNEL ANALYSIS OF SURFACE WAVE (MASW) 2019-10-28T11:24:41+00:00 Refrizon Refrizon Nanang Sugianto Admo Bernard <p><em>Weak subsurface rock structures are thought to be one of the factors causing high abrasion rates in North Bengkulu Regency. This subsurface rock structure is estimated based on the analysis of shear wave velocity (Vs) from the measurement of Multichannel Analysis of Surface Wave (MASW) at 20 points along the coastline. Vs values ​​are interpreted in the form of 1D and 2D profiles to illustrate the structure and type of constituent material in each depth and layer. The results of the analysis show that the stratigraphy of the subsurface Vs value in abrasion-prone areas of North Bengkulu consists of three layers of rock. The first layer with a value of Vs&lt;180 m/s indicated to be dominated by soft clay, the second layer 180&lt;Vs&lt;360 m/s was dominated by rigid soil and the third layer 360&lt;Vs&lt;760 m/s indicated dominated by very dense soil and soft rock. Composition of rocks consists of deposits of sand, gravel, clay, and alluvium which have a low density and vary in each depth. There were no indications of hard rock to a depth of 30 meters, only soft-structured rocks that were very easily cracked and brittle. These results indicate that the subsurface rock structure in the abrasion-prone areas of North Bengkulu is a weak structural rock that is susceptible to deformation such as crack, settlement, and collapse like the abrasion phenomenon that has occurred so far.</em></p> 2019-09-13T09:44:29+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika RANCANG BANGUN SOLAR TRACKER OTOMATIS PADA PENGISIAN ENERGI PANEL SURYA BEBASIS INTERNET OF THINGS 2019-10-28T11:25:31+00:00 Alfin Syarifuddin Syahab Hanif Cahyo Romadhon M. Luqman Hakim <p><em>Indonesia is a tropical country that receives optimum level of sunlight on the surface of earth.</em><em>&nbsp;</em><em>In other hand, the needs of electrical energy increase because of population growth and technological development. it causes needs of a alternative energy. One of inovation to get electrical energy is from sunlight using solar panels. Solar panel is instrument that can convert heat energy from sun to electrical energy. Solar panel will absorb power as same as intensity of sunlight that is received. But there are still many static solar panels. So the power is not optimum when using static solar panels because of low receiving. This experiment has purpose to create instrument that is capable to absorb emission of sunlight optimally using system of solar tracker based on microcontroller 2560. This system of solar tracker is capable to receive momentary average of electrical energy is 9.333 Watts while the momentary average of electrical energy in static solar panel is 0.8 Watts. These results of monitoring are sent to user using communication system based on internet with realtime data. The data can be displayed in website and application android virtuino.</em></p> 2019-09-13T09:45:40+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika PENGARUH PARAMETER METEOROLOGI TERHADAP KONSENTRASI CO2 DAN CH4 DI DKI JAKARTA 2019-10-28T11:26:14+00:00 Lisa Agustina Presli Panusunan Simanjuntak Aulia Nisa’ul Khoir <p>The Special Capital Region of Jakarta is the center of government and economy in Indonesia. The rapid activity certainly causes pollutants that cause air pollution, where some of the parameters are CO<sub>2</sub>&nbsp;and CH<sub>4</sub>. Increasing number of pollutants will endanger the environment, especially human health. An overview of meteorological parameters is very important, because it affects the level of CO<sub>2</sub>&nbsp;and CH<sub>4</sub>&nbsp;concentrations in atmosphere. Therefore, it’s necessary to analyze the relationship between meteorological parameters with CO2 and CH<sub>4</sub>&nbsp;concentrations in DKI Jakarta. The method used in this research is descriptive statistical to see the temporal distribution of CO<sub>2</sub>&nbsp;and CH<sub>4</sub>&nbsp;pollutants to time and its relationship with meteorological parameters (temperature, humidity, rainfall and wind speed). The observation location is located at the Central BMKG, Kemayoran. The data period used is 2008-2017. The results of this data processing showed the highest CO<sub>2</sub>&nbsp;concentration in the MAM period and the lowest in the JJA period. The CH<sub>4</sub>&nbsp;concentration is highest in the DJF period and the lowest in the JJA period. High atmospheric stability and low wind speed and little rainfall that causes high concentrations of CO<sub>2</sub>&nbsp;and CH<sub>4</sub>&nbsp;at the observation location. Statistical calculations illustrate the contribution of contributions in producing the average concentration of pollutants. Wind speed causes a decrease in CO<sub>2</sub>&nbsp;concentration of 83%, and 17% due to other factors. Rainfall factor of 45% affects the decrease in CH<sub>4</sub>&nbsp;concentration in Kemayoran. 45% of the moisture factor also affects the concentration of CH<sub>4</sub>. So an increase in CH<sub>4</sub>&nbsp;concentration by rainfall and humidity factors, and other related factors. Decrease in CH<sub>4</sub>&nbsp;concentration at wind speed by 44%, and by 56% is determined by other factors.</p> 2019-09-13T09:47:22+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika KAJIAN KENAIKAN MUKA AIR LAUT DAN TINGGI GENANGAN (ROB) PADA TAHUN 2023, 2028, DAN 2033 DI KOTA SAUMLAKI, KABUPATEN MALUKU TENGGARA BARAT 2019-10-28T11:26:56+00:00 Satria Ginanjar Christianti Kartika Putri Rizkyan Nurhakim <p>Saumlaki is located in Southeast Maluku Regency, precisely on Yamdena Island. The city is located in the coastal area which makes it in direct contact with external conditions such as tides. The subduction of the Indo-Australian and Eurasian plates is located in the northwest of Saumlaki, makes its sea level more vulnerable to changes. The objective of this research is to determine the substantial of sea level rise based on the analysis of tidal data in 2014-2018 and to predict the height of tidal inundation in 2023, 2028, and 2033. The method used in this research is the quantitative method based of case study. This research uses Saumlaki tidal data that was obtained from BIG, which is then processed to obtain monthly and annual Mean Sea Level values. Based on the research, it is known that the rate of sea level rise in Saumlaki is 3.75cm/year and belongs to the type of Mixed Semi-Diurnal with Formzahl numbers in 2018 = 0.602, MSL value = 383cm, LLWL value = 226.4cm, HHWL value = 541cm, and the value of ZO = 314cm. Inundation prediction in Saumlaki in 2023 = 175.75cm, in 2028 = 194.5cm, and in 2033 = 213.25cm.</p> 2019-09-13T09:48:28+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika ANALISIS PENGARUH MADDEN JULIAN OSCILLATION (MJO) TERHADAP ANOMALI CURAH HUJAN DI WILAYAH NGURAH RAI 2019-10-28T11:27:46+00:00 Wendel Jan Pattipeilohy Femmy Marsitha B Devina Putri Asri <p><em>Madden Julian Oscillation (MJO) is a non-seasonal wave or oscillation in the troposphere &nbsp;which moves from west to east with an oscillation period of approximately 30-60 days. This phenomenon </em><em>influ</em><em>e</em><em>nces the condition of rainfall anomaly in the region passed</em><em>. </em><em>This research</em><em>&nbsp;</em><em>has 8 phases of MJO which are categorized </em><em>into 4 sections according to their movements namely phases 1 and 8 (Western and Africa), phases 2 and 3 (Indian Ocean), phases 4 and 5 (Maritime Continent), phases 6 and 7 (Western Pacific) . The data used in this study are rainfall data in 1996-2015 and MJO data for the same period. </em><em>This research is located in </em><em>Ngurah Rai.</em><em>&nbsp;The anomaly of the rainfall is defined into &nbsp;positive &nbsp;and negative anomaly, then they are</em><em>&nbsp;</em><em>accumulated with the active MJO phases.</em><em>&nbsp;This study aims to analyze the percentage of MJO phase groups which dominates rainfall in positive or negative anomaly. </em><em>The result shows that the percentage of positive anomaly rainfall happens most in MJO phase, Maritime Continent , that is </em><em>36%</em><em>.</em><em>&nbsp;W</em><em>hile the percentage of negative anomaly rainfall dominates at the time MJO is in the phase of Indian Ocean,33%</em></p> 2019-09-13T09:49:40+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika RESPON KEJADIAN MESOSCALE CONVECTIVE SYSTEM DENGAN GABUNGAN MODEL ATMOSFER-OSEANOGRAFI-HIDRODINAMIKA TERHADAP POTENSI GELOMBANG BADAI DAN INUNDASI DI AREA PESISIR KEPULAUAN TANIMBAR 2019-10-28T11:28:24+00:00 Khafid Rizki Pratama Ejha Larasati Siadari Bayu Edo Pratama <p><em>Ocean and atmospheric interaction plays an important role in the formation of convective activities in the Tanimbar Islands, the interaction of the two systems can lead to the phenomenon of meso scale convective patterns and cause significant influence on the formation of rain and strong winds. The system of movement and increase in wind speed will have an impact on rising sea waves to the coast thus forming storm surge and coastal inundation. This study examines the effect of Mesoscale Convective System (MCS) on storm surge and coastal inundation potential in the Tanimbar Islands using a combination of Ocean–Atmosphere–Wave–Sediment Transport (COAWST) and Advanced Circulation Model (ADCIRC) with the aim of developing early warning system for the port and coastal areas. The concept of the COAWST-ADCIRC model is coupled directly with OASIS3-MCT for Sea Surface Temperatures, the spectrum of shallow water and wind circulation. The response of wind speed shows an increase of 3.0 m / s - 4.5 m / s and ocean wave energy increases up to 0.4 - 0.6 meters and the level of sea level rise increases by 0.3 meters. Further verification was carried out with tidal observation data of semi-diurnal constituent patterns and Jason 3 altimetry satellite data. While the investigation of model quality test using the EnKF approach to determine the accuracy of shallow water patterns and inundated affected areas predition.</em></p> 2019-09-13T00:00:00+00:00 Copyright (c) 2019 Jurnal Meteorologi Klimatologi dan Geofisika