The effort on constructing weather data generator to cope with the scarcity of daily rainfall data is becoming essential recently. The objective of the paper is to generate rainfall daily data using stochastic spreadsheet. This technique can generate random values derived from the Gamma distribution which is initiated by the determination of rainfall probabilities, the occurrences on certain days and followed by the generation of rainfall height. The result showed that the rainfall data generator in Padang at period 1976-2005 showed consistent patterns with the observation eventhough simulation on day 180 th the value is too high. Based on T-paired test, it showed no statistically significant different between simulation and observation (P-Value=0.000). Thus, the model can be employed as daily rainfall generator that can be further used to support the sustanaibility of agricultural activitiesin and food security in Padang.
The objective of the study was to apply and to test the HBV subtropical model into a tropical region Batang Arau watershed Padang. Batang Arau watershed, located in Padang, covers an area of 106 km 2 . The HBV model was manually calibrated by trial adjustment of each parameter to obtain the appropriate physical characteristics of Batang Arau watershed. The study shows that the correlation coefficient of 0.48 and the value of NSE at 0.58. The value indicates the HBV modeling included in the category of accuracy being and indicated that HBV built models can not simulate the discharge of DAS Batang Arau quite well and can not be used to represent the real situation in DAS Batang Arau Padang. Although DAS Batang Padang Harau included in a small basin, but the model of HBV have not been able to describe the phenomenon that is properly due to the diversity of topography.
One of the important factors for living things and also the weather element is soil moisture. Observations of weather elements have been carried out used according to future needs. Soil moisture has been using to manage weather forecasts, early warning of drought, water resources, and irrigation scheduling. Due to the development of sensors in the electronics world, various digital measuring instruments where is founded to make it easier to measure soil moisture. This article describes the manufacture of a soil moisture meter and the results of the performance specifications of the humidity measurement system with the internet of things-based SHT11 sensor. This instrument uses an SHT11 sensor is used for the humidity sensor and soil temperature, Nodemcu ESP8266 is used as Internet access to transmit to thingspeak, data save in the micro SD memory.
RETRACTION TO:Sudiar, N. Y. (2022). Pengelolaan Sampah Plastik Daerah Kepulauan Di Siberut Selatan Mentawai. Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat, 22(2), 224-233. (doi: https://doi.org/10.24036/sb.02330This article has been retracted by the Publisher based on the following reason:The Editor of Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat obtains requests from the author for changes authors to the Incorrect author/contributor list (i.e., an eligible author has been omitted or someone who does not meet the authorship criteria has been included).
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