30 Jan 2023
 | 30 Jan 2023
Status: this preprint is currently under review for the journal ESSD.

Ten years of 1 Hz solar irradiance observations at Cabauw, the Netherlands, with cloud observations, variability classifications, and statistics

Wouter Bastiaan Mol, Wouter H. Knap, and Chiel C. van Heerwaarden

Abstract. Surface solar irradiance varies on scales down to seconds, of which detailed, long-term observational datasets are rare but in high demand. Here, we present an observational dataset of global, direct, and diffuse solar irradiance sampled at 1 Hz over a period of 10 years, from the Baseline Surface Radiation Network (BSRN) station at Cabauw, the Netherlands. The dataset is complemented with irradiance variability classifications, clear-sky irradiance and aerosol reanalysis, information about the solar position, observations of clouds and sky type, and wind measurements up to 200 meters above ground level. Statistics of variability derived from all time series include approximately 185,000 detected events of both cloud enhancement and cloud shadows. The Cabauw measurement site has additional observations freely available at the open data platform of the Royal Netherlands Meteorological Institute. This paper describes the observational site, quality control, classification algorithm with validation, and the processing method of complementary products. These observations and derived statistics provide detailed information to aid research into how clouds and atmospheric composition influence solar irradiance variability, and to help validate models that are starting to resolve variability at higher fidelity. The main datasets are available at (Knap and Mol, 2022) and (Mol et al., 2022b), see the data availability section for a complete list.

Wouter Bastiaan Mol et al.

Status: open (until 27 Mar 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Wouter Bastiaan Mol et al.

Data sets

High resolution solar irradiance variability climatology dataset part 1: direct, diffuse, and global irradiance Wouter Knap, Wouter Mol

High resolution solar irradiance variability climatology dataset part 2: classifications, supplementary data, and statistics Wouter Mol, Wouter Knap, Chiel van Heerwaarden

Wouter Bastiaan Mol et al.


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Short summary
We describe a dataset of detailed measurements of sunlight reaching the surface, recorded at a rate of once per second for 10 years. The dataset includes detailed information of direct and scattered sunlight, classifications and statistics of variability, observations of clouds, atmospheric composition, and wind. The dataset can be used to study how the atmosphere influences sunlight variability and to validate models that aim to predict this variability with greater accuracy.