A NASA Frontier Development Lab (FDL) team has shown that by using deep learning, it is possible to virtually monitor the Sun's extreme ultraviolet (EUV) irradiance, which is a key driver of space weather. The Sun is vital for survival, but solar flares, which typically occur a few times a year, have the potential to cause severe disruptions in space and on Earth.

These disruptions can impact spacecraft, satellites and even systems here on Earth, including GPS navigation, radio communications and the power grid. Deep learning can help get more value out of our current ability to monitor the Sun by providing virtual instruments to supplement physical devices. This research will be published in Science Advances on October 2, 2019 ("A Deep Learning Virtual Instrument for Monitoring Solar Extreme Ultraviolet Spectral Irradiance").

"Our research shows how a deep neural network can be trained to mimic an instrument on the Solar Dynamics Observatory (SDO)," said FDL team member and co-author Alexander Szenicer (Oxford University). "By inferring what ultraviolet radiation levels that sensor would have detected based on what the other instruments on SDO are observing at any given time, we demonstrate it is possible to increase scientific productivity of NASA missions and to increase our capability to monitor solar sources of space weather."

FDL is a partnership between NASA Ames Research Center, the SETI Institute and private sector and space agency partners including Google Cloud, Intel AI, IBM, Kx Lockheed Martin, Luxembourg Space Agency, NVIDIA, Canadian Space Agency, HPE and Element AI.

During an 8-week summer research accelerator, interdisciplinary teams comprised of early career researchers in AI and natural science domains work together to apply AI and machine learning to address important challenge questions. The challenge question behind this research was to develop an AI model using SDO images to predict solar spectral irradiance.

Traditionally, methods for monitoring solar EUV spectral irradiance include physics-inspired models that attempt to predict EUV emission. Such methods use either magnetic field distributions on the Sun's surface or physics-based inversions of the plasma distribution in the Sun's corona.

These new results show it is possible to use imaging observations of the Sun to create a proxy measurement of EUV spectral irradiance. Feeding coronal images from NASA's SDO to a deep neural network allows us to generate proxy EUV measurements with an accuracy that surpasses physics-based models.

Additionally, the team developed benchmarks and protocols for comparing predictions between EUV models. These will be useful for future studies. Thus far, research has barely scratched the surface on what's feasible by combining deep learning with large-scale scientific space data. Data science and machine learning will play increasingly important roles in our endeavor to understand the origins of space weather and how to live with the Sun.

Research Report: "A Deep Learning Virtual Instrument for Monitoring Extreme UV Solar Spectral Irradiance"

Related Links
SETI Institute
Solar Science News at SpaceDaily

Tweet

Thanks for being here; We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain. With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords. Our news coverage takes time and effort to publish 365 days a year. If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor $5 Billed Once credit card or paypal		SpaceDaily Monthly Supporter $5 Billed Monthly paypal only

New standard of reference for assessing solar forecast proposed
Washington DC (SPX) Sep 27, 2019
Being able to accurately forecast how much solar energy reaches the surface of the Earth is key to guiding decisions for running solar power plants. While day-ahead forecasts have become more accurate in recent years, the solar community lacks a unified verification procedure, and assessing how one forecast compares to another is difficult. New work in the Journal of Renewable and Sustainable Energy, from AIP Publishing, looks to provide a standard of reference to the field. Researcher Dazhi ... read more