A Modified Method to Generate Typical Meteorological Years from the Long-Term Weather Database

Haixiang Zang,Katsuhiro Ichiyanagi,Qingshan Xu,Pengwei Du

doi:10.1155/2012/538279

Abstract

A modified typical meteorological year (TMY) method is proposed for generating TMY from practical measured weather data. A total of eleven weather indices and novel assigned weighting factors are applied in the processing of forming the TMY database. TMYs of 35 cities in China are generated based on the latest and accurate measured weather data (dry bulb temperature, relative humidity, wind velocity, atmospheric pressure, and daily global solar radiation) in the period of 1994–2010. The TMY data and typical solar radiation data are also investigated and analyzed in this paper, which are important in the utilizations of solar energy systems.

Highlights

China lies in the northeast part of East Asia between 4◦ and 53◦ North latitude and 73–135◦ East longitude with a population of about 1.3 billion [1, 2]
Using the above modified TMY method, the typical meteorological years (TMYs) for the 35 stations listed in Table 1 are generated, consisting of the selected most typical years for 12 months
The detailed typical solar radiation data sourced from the TMYs are analyzed in the following

Summary

Introduction

China lies in the northeast part of East Asia between 4◦ and 53◦ North latitude and 73–135◦ East longitude with a population of about 1.3 billion [1, 2]. Based on the TMY method, typical solar radiation data are formed by the selection from the real recorded weather data. Yang et al [27], TMYs for 60 cities in five major climatic zones of China were investigated through nine recorded weather indices (only the global solar radiation and not including the direct solar radiation data). Jiang [14] generated TMYs using nine weather parameters (including the global and the direct solar radiation data). It is suggested that the TMY selection process should include the most recent meteorological observations [25] In this present study, based on the modified TMY method (eleven meteorological indices and the novel assigned weighting factors), the TMYs and typical solar radiation data for 35 stations are formed and analyzed using the latest and accurate long-term weather data

Selection of Cities and Data Used

Method Used

Hami 5

Results and Discussion

Conclusions

20 Hangzhou 18 16 14 12 10 8 6 4