merra2ools package offers a set of tools and MERRA-2 data subset to evaluate hourly output potential of solar and wind energy sources, as well as precipitations for weather-dependent hydro power output. The goal of the project is to provide both - the dataset and algorithms to estimate potential output and so-called capacity factors for variable energy sources, used as an input data in energy system modeling and broader application. To keep the size of the database lower than 300Gb for online publication, the original subset of MERRA-2 time series have been minimally processed, rounded, and saved as scaled integers in highly compressed format provided by
The merra2ools dataset has 41 years (1980-2000) of the hourly time-series:
sqrt(V10M^2 + U10M^2)where
U10Mare northward and eastward wind at 10-meter, m/s, rounded to the first decimal place);
sqrt(V50M^2 + U50M^2)where
U50Mare northward and eastward wind at 50-meter, m/s, rounded to the first decimal place);
atan2(V50M/U50M), rounded to tens);
Representation of wind with three variables (
WDIR) is the main difference from the original MERRA-2 data (
U50M). This conversion reduces the size of the database and further computational burden of wind power capacity factors.
All variables are hourly averages, UTC-time is given for a middle of every hour.
The merra2ools package includes:
The package reproduces basic algorithms of solar geometry, irradiance decomposition, and the Plane-Of-Array models for different types of solar PV trackers.