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Weather radar (Radio Detection and Ranging) cannot measure rainfall rate (R) but radar reflectivity (Z). So that an empirical relationship is needed between measure rainfall depth (R) and radar reflectivity (Z) that can be shown as where coefficient A and b depend upon the geographic location, clima...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/18692 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Weather radar (Radio Detection and Ranging) cannot measure rainfall rate (R) but radar reflectivity (Z). So that an empirical relationship is needed between measure rainfall depth (R) and radar reflectivity (Z) that can be shown as where coefficient A and b depend upon the geographic location, climate condition and precipitating cloud types. Precipitating clouds identification in the previous study conducted by analyzing the vertical structure of reflectivity, doppler velocity and spectral width derived from Serpong C-Band Doppler Radar (6.4°S, 106.7°E). In this study discuss Z-R relationship at Serpong C-Band Doppler Radar in general and in various precipitating clouds.Radar measurements between November 2012 until January 2013 shows the Z-R relationship using statistical method is . Meanwhile from precipitating cloud identification from November until January derived that most of rain events in Jakarta are produced by stratiform cloud. Z-R relationship from different precipitating clouds shows coefficient A from deep convective > stratiform > shallow convective meanwhile exponent b from stratiform > deep convective > shallow convective. 10 rainfall events were examined to see the best Z-R relation and obtained that is the most suit for C-Band Radar at Serpong, showed by acceptable mean error, mean absolute error, root mean-square error and correlation values. |
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