Py6S: A Python interface to the 6S radiative transfer model

Radiative Transfer Models (RTMs) are widely used to simulate the passage of solar radiation through atmospheres on Earth and other planets. They have a range of uses including atmospheric research and solar energy system design, and are widely used within remote sensing and Earth observation, but they are often seen as difficult to use with respect to the numerous input and outputs parameters. This paper outlines Py6S, a Python interface to the 6S RTM (Vermote et al., 1997) designed to address these issues. Py6S allows the user to write simple Python scripts which can set 6S input variables, run simulations and access the outputs. Methods are also provided to perform common tasks, such as running a simulation for a range of wavelengths. It is envisaged that Py6S will provide a useful framework in which research on atmospheric radiative transfer can be conducted using 6S, as well as opening the use of 6S to a wider audience including students.