High-resolution daily precipitation fields for the Italian part of the Greater Alpine Region (1881-2023)

The dataset presents a new daily high-resolution gridded precipitation dataset over the 1881-2023 period for the Italian part of the Greater Alpine Region. It has been obtained starting from a quality-checked dataset of more than 7000 meteorological stations. This dataset is mainly based on the Italian networks of mechanical and automatic meteorological stations. It has been used to obtain 7.5 arc-second resolution daily precipitation fields by means of the anomaly method. On one side, the monthly 1991-2020 climatologies have been obtained interpolating the stations by means of a Local Weighted Linear Regression of precipitation with respect to elevation. On the other side, the temporal evolution of the relative monthly anomaly stations, with respect to the 1991-2020 period, and the temporal evolution of the daily fractions of precipitation have been interpolated onto the same grid. The three fields have been combined to obtain a precipitation field for each day for the whole area. Therefore, the obtained precipitation fields can be used to reconstruct any precipitation event in the investigated area and period. The fields for space reasons are here uploaded considering only one point over four both for latitude and longitude reducing the resolution to 30 arc-second (about 1 km). The 7.5 arc-second monthly 1991-2020 climatologies are available too.