meteonorm software version 7

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Weather data for any site worldwide

Usually, measurement data can only be used in the vicinity of a weather station. Elsewhere, the data has to be interpolated between different stations. The sophisticated interpolation models inside meteonorm allow a reliable calculation of solar radiation, temperature and additional parameters at any site in the world.

Calculation of hourly and minute values

From the monthly values (station data, interpolated data or imported data), meteonorm calculates hourly values of all parameters using a stochastic model. The resulting time series correspond to "typical years" used for system design. Additionally, the following parameters are derived:

• solar azimuth and elevation
• global, diffuse and beam (direct normal) radiation as well as radiation on inclined planes
• longwave radiation
• luminance
• spectral UVA/UVB, erythemal radiation
• precipitation, driving rain
• humidity parameters (dewpoint, relative humidity, mixing ratio, psychrometric temperature)

The generation of humidity values is optimized to fit building and climate system simulations (including extreme hourly values).

Additionally a stochastic generation model for minute values of radiation parameters is available.

Effects of high horizon considered

meteonorm calculates reduced global radiation caused by a high horizon. The horizon line can easily be entered either graphically (drag line) or numerically. For most regions of the world, the horizon line is calculated automatically, based on a digital terrain mode (accessible over the internet).

Any rectified picture of the horizon can be imported and used as a background for digitizing the horizon. As a new feature in meteonorm 7, images taken with horicatcher can be imported and processed directly inside meteonorm. The additional horicatcher software is not required anymore.

horicatcher

horicatcher is an add-on for meteonorm. It is an accurate and fast tool to determine the real horizon line at your specific site. horicatcher allows you to take into account the reduction of the solar energy input, the sunshine duration and sun exposure by obstacles like trees, houses or mountains at your site.

Data export

36 different predefined export formats are available. They cover most of the established simulation software in solar energy applications and building design, including TMY2 and 3, EPW, TRNSYS as well as output formats for TRY (German test reference years), POLYSUN, TSOL/PVSOL, PVSyst and PHPP. All export formats are available for hourly as well as monthly values. Data is written to ASCII files.

Alternatively, the parameters and the desired units can be defined in a user-defined export format.