Method and device for measuring atmospheric parameters to estimate the quality of the air and the climate variables

A method for measuring at least one atmospheric parameter, the method comprising:

• simultaneously acquiring, as an acquisition step, a series of spectral images of Earth's atmosphere with a plurality of optical systems, wherein the plurality of optical systems are located in the Earth's atmosphere, fixed relative to an earth frame reference, oriented such that the spectral images that they acquire contain measurement data of the at least one atmospheric parameter along respective lines of sight of the optical systems, and arranged such that, during the acquisition step, there is at least one point of intersection between two lines of sight, such that two spectral images which are simultaneously acquired along the two lines of sight contain mutual measurement data of the at least one atmospheric parameter, wherein the mutual measurement data is representative of the at least one atmospheric parameter at a point of the Earth's atmosphere corresponding to the point of intersection;
• and
• changing, as a scanning step, orientation of the optical systems, wherein the acquisition step and the scanning step are repeated so as to acquire a succession of series of spectral images comprising a set of mutual measurement data representative of the at least one atmospheric parameter at a set of points of the Earth's atmosphere.