Solar irradiance measurements from a network of pyranometers on the rooftop of ETSIDI-UPM (Madrid, Spain)

This dataset contains ground-based measurements of solar irradiance collected with a network of pyranometers located on the rooftop of the ETSIDI (UPM), located at 40°24'19.4"N 3°42'10.1"W in Madrid, Spain. Measurements include Global Horizontal Irradiance (GHI) recorded with a set of pyranometers of Kipp & Zonnen, models SMP-21A (pyranometers P1 to P9 and Pinc) and SMP-3A (pyranometer P0). Wind speed and ambient temperature are also included. The data are provided as daily CSV files, which are grouped into monthly ZIP archives. Each record corresponds to a temporal resolution of 5 seconds. Time stamps are expressed in local time (time zone: Europe/Madrid). Irradiance values are expressed in W m⁻², wind speed in m/s and ambient temperature in degrees celsius. Data gaps may occur due to maintenance operations, sensor recalibration, or temporary acquisition failures. The version 1.0 of the dataset covers the period April 2025 to March 2026.