POLArisation of the thermospheric Red Line In Svalbard

This proposal is an extension of the proposal 1026. After a series of discoveries and a first wintering at Ny-Alesund, it is now desirable to perform long term measurements of the red line polarisation. Long term means at least over ½ solar cycle (about 6 years) from the same observations position. The goal is to link the polarisation to the solar activity to make it a new space weather window on our space environment. We already have a few months from Hornsund, and a few months from Ny-Alesund. We propose here to complete this series of observations for the next 4 winters at Ny-Alesund.