การประยุกต์ใช้ข้อมูลเรดาร์อุตุนิยมวิทยาและข้อมูลความต้องการน้ำของพืชเพื่อวิเคราะห์การใช้ประโยชน์ที่ดินด้านการเกษตร / ไพรัช จงเจริญ = Application of weather radar and plant water requirements for agricultural landuse analysis / Pairush Chongcharoen
Data from Weather Radar is now being widely used for several purposes, for example to measure precipitation in flood-control system or to monitor cloud motion. However, those typical usages of weather radar data are normally event-based analyses within specific or small extent of space and time. This thesis objective is, therefore, set to explore the technical feasibility in using weather radar data to determine spatial rainfall data by creating the rainfall map. The well-known Z-R relationship equation is used and the result rainfall maps were compared with the maps derived from observed rainfall data from rain gauge stations. The example application of that rainfall map derived from weather radar data, i.e. the analysis of rain water adequacy for rice and corn crop, was also demonstrated. Finally, this could prove to be a new alternative of generating more precise spatial rainfall information to be analyzed with another data. The result of this research work demonstrates that weather radar data can be utilized for generating spatial rainfall map. Data processing techniques in analyzing that weather radar data are also exemplified. The resulted rainfall information is also believed to be more accurate compared to conventional rainfall map compiled from rain gauge data. This is due to the fact that radar data contain more detailed, continuous rainfall distribution information while rain gauge collects rainfall data in a point-based manner. This research has also exhibited that spatial rainfall map from radar data can be further used in analyses with crop water requirements data to determine the levels of rainwater adequacy for rice and corn cultivation in study area. The conformity between the resulted rainwater adequacy map and existing cropping area is still quite varying. This inconsistency could come from the fact that some study area be within the irrigated area and therefore getting other water sources than the rain water.
