juliensimon/f107-solar-flux
F10.7 Solar Radio Flux (Penticton) Credit: NASA Part of a dataset collection on Hugging Face. Dataset description Daily F10.7 cm (2800 MHz) solar radio flux measurements from the Dominion Radio Astrophysical Observatory in Penticton, BC. The primary proxy for solar extreme ultraviolet (EUV) radiation, measured continuously since 1947. The F10.7 solar radio flux is THE primary proxy for solar extreme ultraviolet (EUV) radiation. It has been measured… See the full description on the dataset page: https://huggingface.co/datasets/juliensimon/f107-solar-flux.
F10.7 Solar Radio Flux (Penticton)
<div align="center"> <img src="banner.jpg" alt="Aurora borealis blankets the Earth, seen from the ISS" width="400"> <p><em>Credit: NASA</em></p> </div>
Part of a [dataset collection](https://huggingface.co/collections/juliensimon/space-weather-datasets-69c24cae98f1666f2101ca70) on Hugging Face.
Dataset description
Daily F10.7 cm (2800 MHz) solar radio flux measurements from the Dominion Radio Astrophysical Observatory in Penticton, BC. The primary proxy for solar extreme ultraviolet (EUV) radiation, measured continuously since 1947.
The F10.7 solar radio flux is THE primary proxy for solar extreme ultraviolet (EUV) radiation. It has been measured continuously since 1947, making it one of the longest running solar activity indices. It is used in atmospheric density models (NRLMSISE-00, JB2008, DTM), orbit propagation for drag modelling, ionospheric models for GPS/GNSS correction and HF radio propagation, and solar cycle monitoring.
The F10.7 index originates from thermal bremsstrahlung and gyroresonance emission in the solar corona and chromosphere, primarily above active regions. Unlike direct EUV measurements -- which require space-based instruments -- the 10.7 cm wavelength penetrates Earth's atmosphere, allowing ground-based observation. The measurement has been made at local noon at the DRAO in Penticton, British Columbia since 1947, making it the longest continuous solar activity proxy available after sunspot numbers.
Three variants are provided: the observed flux (as measured), the adjusted flux (corrected to 1 AU to remove the ~3.3% variation from Earth's orbital eccentricity), and the absolute flux (tied to the calibration scale). During solar maximum, F10.7 can exceed 300 SFU for extended periods, increasing thermospheric density at 400 km by a factor of 10-20 compared to deep solar minimum (~65 SFU).
This dataset is suitable for tabular regression tasks.
Schema
Quick stats
- 51,441 daily observations (1947-01-01 to 2026-09-25)
- Mean observed flux: 118.3 SFU
- Peak observed flux: 1645.2 SFU
Usage
from datasets import load_dataset
ds = load_dataset("juliensimon/f107-solar-flux", split="train")
df = ds.to_pandas()from datasets import load_dataset
ds = load_dataset("juliensimon/f107-solar-flux", split="train")
df = ds.to_pandas()
# Recent solar activity
recent = df[df["date"] > "2024-01-01"].sort_values("date")
print(recent[["date", "observed_flux_sfu", "adjusted_flux_sfu"]])
# Solar cycle plot
import matplotlib.pyplot as plt
fig, ax = plt.subplots(figsize=(14, 5))
ax.plot(df["date"], df["observed_flux_sfu"], linewidth=0.3, alpha=0.5)
ax.set_xlabel("Date")
ax.set_ylabel("F10.7 (SFU)")
ax.set_title("F10.7 Solar Radio Flux")
plt.show()Data source
https://lasp.colorado.edu/lisird/data/pentictonradioflux/
Related datasets
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About the author
Created by Julien Simon — AI Operating Partner at Fortino Capital. Part of the Space Datasets collection.
Citation
@dataset{f107_solar_flux,
title = {F10.7 Solar Radio Flux (Penticton)},
author = {Simon, Julien},
year = {2026},
url = {https://huggingface.co/datasets/juliensimon/f107-solar-flux},
note = {Derived from Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, https://lasp.colorado.edu/lisird/data/penticton_radio_flux/},
publisher = {Hugging Face}
}