Generation of 441 Typical Meteorological Year from Inmet Stations - Brazil
Abstract
Since 2005, the Brazilian National Institute of Meteorology (INMET) has developed and operated an extended automatic weather station network. There are about 564 stations currently in operation, each one providing hourly values of several meteorological parameters, including global solar irradiation (GHI). This long-term period of data is important to support research and development in the energy production sector, and to assist the development of the national energy matrix. However, due to interannual variability of meteorological variables, the use of typical meteorological year (TMY) data to represent a long-term dataset is crucial to ensure that risk analysis and simulation of solar plants are closer to reality. Thus, this paper presents a methodology to select the 12 representative typical meteorological months of each INMET station. In the end, the TMY for the city of Brasilia has been compared with long-term average measured data for GHI and DNI (Direct Normal Irradiation).