Two-dimensional Spectroscopic Time Series of Solar Granulation: Evolution of Individual Granules

In this paper we investigate the dynamics of the solar granulation by analyzing time series of 2-D spatially highly resolved spectrograms. The high quality of the data permitted us to follow the evolution of individual granular and intergranular areas. We used scans over the solar surface in order to obtain a 2- D information. This has the advantage of achieving high spectral and spatial resolution, however one scan lasted for about 2 min. We analyze two dimensional time series of solar photospheric spectrograms in order to study the dynamics of solar fine structures and their evolution. The two dimensional images were obtained by scanning over the photosphere. Spectrographic data of this type include a much higher information than ordinary images.