KARAKTERISTIK KETINGGIAN DASAR AWAN YANG DIUKUR DENGAN SENSOR INFRA MERAH RADIOMETER PADA PUNCAK MUSIM HUJAN DI JABODETABEK.

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Findy Renggono

Abstract

Intisari

Informasi mengenai tinggi dasar awan penting bagi penelitian atmosfer dan juga sebagai masukan bagi pemodelan cuaca. Pada kegiatan modifikasi cuaca, informasi ini juga sangat penting dalam menentukan awan yang akan disemai. Dalam tulisan ini, pengukuran tinggi dasar awan dilakukan dengan menggunakan sensor infra merah yang terpasang pada radiometer. Sensor infra merah ini akan mengukur suhu dasar awan yang kemudian dapat diketahui ketinggiannya dengan melihat temperatur lapse rate. Hasil pengukuran dibandingkan dengan hasil pengamatan awan oleh micro rain radar yang terletak di lokasi yang sama. Hasil pengukuran dari kedua peralatan ini menunjukkan kesesuaian antara kemunculan awan pada micro rain radar yang ditunjukkan dengan struktur vertikal awan dengan hasil pengamatan dengan IRT dari radiometer. Pengamatan selama puncak musim hujan di Jabodetabek (Januari – Maret 2019) menunjukan adanya pola harian yang cukup jelas.

 

Abstract

Information on cloud properties is important for atmospheric research and as well as for weather modeling. In weather modification, this information is very important for cloud seeding strategy. The observation of cloud base height is carried out using infrared sensors mounted on a radiometer. These infrared thermometer sensors are capable of detecting the cloud base temperature, the cloud base height is obtained by looking at the temperature lapse rate retrieved from radiometer observation. The results were compared with the cloud observation by micro rain radar which is located at the same location. The comparison results of these two instruments show that the consistency of cloud detection was good. Based on the observation during the peak of the rainy season in Jabodetabek (January-March 2019), it is shown a fairly clear daily pattern

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References

Athoillah, I., Dewi, S., Renggono, F. (2016). Perbandingan Pengukuran Radiometer dan Radiosonde pada Musim Hujan di Dramaga Bogor. Jurnal Sains & Teknologi Modifikasi Cuaca, 17(2), 75-82. doi: 10.29122/jstmc.v17i2.640

Craven, J.P., Jewell, R.E., Brooks, H.E. (2002) Comparison between Observed Convective Cloud-Base Heights and Lifting Condensation Level for Two Different Lifted Parcels. Weather and Forecasting, 17(4), 885–890. doi: 10.1175/1520-0434(2002)017<0885:CBOCCB>2.0.CO;2

Forsythe, J.M., Haar, T.H.V., Reinke, D.L. (2000) Cloud-Base Height Estimates Using a Combination of Meteorological Satellite Imagery and Surface Reports. Journal of Applied Meteorology, 39(12), 2336-2347. doi: 10.1175/1520-0450(2000)039<2336:CBHEUA>2.0.CO;2

Mims III, F.M., Chambers, L.H., Brooks, D.R. (2011) Measuring Total Column Water Vapor by Pointing an Infrared Thermometer at the Sky. Bulletin of the American Meteorological Society, 92(10),1311-1320. doi: 10.1175/2011BAMS3215.1

Peters, G., Fischer, B., Andersson, T. (2002). Rain Observations with a Vertically Looking Micro Rain Radar (MRR). Boreal Environment Research, 7(4), 353–362.

Renggono, F. (2017). Variasi Harian dan Tahunan Hujan di Serpong Berdasarkan Pengamatan dengan Micro Rain Radar. Jurnal Sains & Teknologi Modifikasi Cuaca, 18(2), 75-80. doi: 10.29122/jstmc.v18i2.2785

Stackpole, J.D. (1967). Numerical Analysis of Atmospheric Soundings. Journal of Applied Meteorology, 6(3), 464–467. doi: 101175/1520-0450(1967)006<0464:NAOAS>2.0.CO;2

Syaifullah, M.D. (2014) Validasi Data TRMM terhadap Data Curah Hujan Aktual di Tiga DAS di Indonesia. Jurnal Meteorologi dan Geofisika, 15(2), 109-118. doi: 10.31172/jmg.v15i2.180

Wang, Z., Wang, Z., Cao, X., Mao, J., Tao, F., Hu, S. (2018) Cloud-Base Height Derived from a Ground-Based Infrared Sensor and a Comparison with a Collocated Cloud Radar. Journal of Atmospheric and Oceanic Technology, 35(4), 689–704. doi: 10.1175/JTECH-D-17-0107.1

Williams, C.R., Ecklund, W.L., Gage, K.S. (1995) Classification of Precipitating Clouds in the Tropics Using 915-MHz Wind Profiler. Journal of Atmospheric and Oceanic Technology, 12(5), 996–1012. doi: 10.1175/1520-0426(1995)012<0996:COPCIT>2.0.CO;2

Yang, H-Y., Chang, K-H., Kang, S-T. (2013). Combined Microwave Radiometer and Micro Rain Radar for Analysis of Cloud Liquid Water. Journal of the Chosun Natural Science, 6(1), 12-15. doi: 10.13160/ricns.2013.6.1.012

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