• Organization: Department of Energy
• Updated: 2025-11-20T15:47:01Z

This database represents a list of community solar projects, as well as the low-income (LI) and low- and moderate-income (LMI) provisions for both complete and pending projects identified through...

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• Organization: Department of Energy
• Updated: 2024-12-18T17:36:27Z

The U.S. Department of Energy's National Renewable Energy Laboratory collaborates with the solar industry to establish high quality solar and meteorological measurements. This Solar Resource and...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1942-06-24T00:00:00.000+00:00

The photosphere of the Sun has a temperature of around 6, 000 degreesK and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1880-06-09T00:00:00.000+00:00

The photosphere of the Sun has a temperature of around 6, 000 degreesK and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1947-09-01T00:00:00.000+00:00

The photosphere of the Sun has a temperature of around 6, 000 degrees K and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1966-01-01T00:00:00.000+00:00

The photosphere of the Sun has a temperature of around 6, 000 degrees K and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1956-01-16T00:00:00.000+00:00

Full sun drawings are a form of synoptic analysis drawings, also known as Neutral line (NL) drawings which provide a comprehensive daily view of the sun for relevant solar feature of interest. To...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2007-11-09T00:00:00.000+00:00

The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1915-08-09T00:00:00.000+00:00

The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1967-08-15T00:00:00.000+00:00

In 1967 Boulder became one of the SPAN observatories when it received its Razdow Telescope. The telescope would be used to observe solar flares and related solar phenomena. Using a Hydrogen -...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2009-09-01T00:00:00.000+00:00

Solar-Geophysical Data (SGD) reports were a comprehensive compilation of many different kinds of observational data of the sun's activity and its effects on the Earth. Data from the worldwide...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1948-02-18T00:00:00.000+00:00

The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1957-07-01T00:00:00.000+00:00

Collection consists of white-light (unfiltered), full-disk images of the sun provided by various solar observatories and institutions. White light pictures show how the Sun appears to the naked...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1981-01-01T00:00:00.000+00:00

These datasets consist of full-disk, daily photographs of the sun taken at the H-alpha wavelength. Collection includes a variety of H-alpha photographic datasets contributed by a number of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2011-10-01T00:00:00.000+00:00

The H-alpha Flare Patrol identifies time periods each day when the sun is being continuously monitored by select ground-based solar observatories.

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2001-01-02T00:00:00.000+00:00

These datasets consist of full-disk, daily photographs of the sun taken at the H-alpha wavelength. Collection includes a variety of H-alpha photographic datasets contributed by a number of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2018-05-11T00:00:00.000+00:00

The Solar Ultraviolet Imager (SUVI) Level 1b Solar Imagery: X-Ray product contains an image of the Sun at one of six wavelengths with different exposure times, and metadata required for...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1999-01-01T00:00:00.000+00:00

A solar magnetogram is a pictorial representation of the spatial variations in strength of the solar magnetic field. Magnetograms are often produced by exploiting the Zeeman effect (or, in some...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2008-08-29T00:00:00.000+00:00

A solar magnetogram is a pictorial representation of the spatial variations in strength of the solar magnetic field. Magnetograms are often produced by exploiting the Zeeman effect (or, in some...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1999-01-01T00:00:00.000+00:00

A solar magnetogram is a pictorial representation of the spatial variations in strength of the solar magnetic field. Magnetograms are often produced by exploiting the Zeeman effect (or, in some...

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