Environmental Project's Achievements Reports Query System

UV-Index Forecasting System and Instrument Calibration Laboratory

Absrtact	The main task of this project, “UV Forecast System and Monitoring Instrument Calibration Lab.-Fiscal year 104” is to enhance the UV forecast and monitoring ability in Taiwan. The objective of this project are : (1) To maintain and operate the UV Index forecast numerical dynamical model system. (2) To maintain the numerical fidelity of UV monitoring. (3) To provide UV forecast auxiliary information. (4) To execute UV instruments calibration quality control. Beside of operational works, the following jobs have been done: The data of the UV monitoring system is analyzed. It is shown that the ratio of valid data is quite high. The variation of the observation is stable. The proportion of the radiation sustained during noon in daily total amount appears high in winter and low in summer. Probability of UVI larger than hazard –scale as well as UVI≧8 show spatial and inter-annual variability. Climate and weather as well as UVI changed abruptly. The first half of 2015, Taiwan’s UVI showed higher than in the past, the second half showed slightly lower. Furthermore, meteorological data such as maximum temperature, diurnal temperature range, vapor pressure, cloudiness, and precipitation have been analyzed to explore the causes of monthly UVI anomalies. UV monitoring and forecast data have analyzed. It is shown that UVI forecast performance is quite stable. Furthermore, in order to improving UVI forecasting, meteorological data such as weather map, station temperature and humidity, as well as satellite image have been studied while forecast is fail. To maintain the correctness of UV monitoring values, UVI Calibration Lab. did the calibration of 32 radiometers (4 UVA and 28 UVB) in this year. In 2015, UVI Calibration Lab. also completed the calibration of 14 radiometers of CWB (CWB’s UVB). All works proposed have been accomplished. The content of the raw data and statistics analyzing result of observations, and UV instrument calibration records have been kept and updated by schedule. All these work helps to enhance the UV forecast and monitoring ability in Taiwan.
Keyword	UVI, Monitoring and Forecasting, Calibration

Absrtact

The main task of this project, “UV Forecast System and Monitoring Instrument Calibration Lab.-Fiscal year 104” is to enhance the UV forecast and monitoring ability in Taiwan. The objective of this project are : (1) To maintain and operate the UV Index forecast numerical dynamical model system. (2) To maintain the numerical fidelity of UV monitoring. (3) To provide UV forecast auxiliary information. (4) To execute UV instruments calibration quality control. Beside of operational works, the following jobs have been done: The data of the UV monitoring system is analyzed. It is shown that the ratio of valid data is quite high. The variation of the observation is stable. The proportion of the radiation sustained during noon in daily total amount appears high in winter and low in summer. Probability of UVI larger than hazard –scale as well as UVI≧8 show spatial and inter-annual variability. Climate and weather as well as UVI changed abruptly. The first half of 2015, Taiwan’s UVI showed higher than in the past, the second half showed slightly lower. Furthermore, meteorological data such as maximum temperature, diurnal temperature range, vapor pressure, cloudiness, and precipitation have been analyzed to explore the causes of monthly UVI anomalies. UV monitoring and forecast data have analyzed. It is shown that UVI forecast performance is quite stable. Furthermore, in order to improving UVI forecasting, meteorological data such as weather map, station temperature and humidity, as well as satellite image have been studied while forecast is fail. To maintain the correctness of UV monitoring values, UVI Calibration Lab. did the calibration of 32 radiometers (4 UVA and 28 UVB) in this year. In 2015, UVI Calibration Lab. also completed the calibration of 14 radiometers of CWB (CWB’s UVB). All works proposed have been accomplished. The content of the raw data and statistics analyzing result of observations, and UV instrument calibration records have been kept and updated by schedule. All these work helps to enhance the UV forecast and monitoring ability in Taiwan.

Keyword

UVI, Monitoring and Forecasting, Calibration