• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-08-10T00:00:00.000+00:00

A solar flare is a short-lived sudden increase in the intensity of radiation emitted in the neighborhood of sunspots. For many years it was best monitored in the H-alpha wavelength and occurs in...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-08-10T00:00:00.000+00:00

Listings and characterizations of solar x-ray flares

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-01

<p> We propose here to develop the <em>Gamma-Ray Imager/Polarimeter for Solar flares </em>(<em>GRIPS</em>), the next-generation instrument for high-energy solar observations. <em>GRIPS </em>will...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-08-10T00:00:00.000+00:00

Collection includes a variety of indices related to solar activity contributed by a number of national and private solar observatories located worldwide. This metadata record is currently under...

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

A Sudden Ionospheric Disturbance (SID) is any of several radio propagation anomalies due to ionospheric changes resulting from solar or geophysical events.

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-08-10T00:00:00.000+00:00

Daily index of solar flare activity.

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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: 2011-10-01T00:00:00.000+00:00

A short-lived sudden increase in the intensity or radiation emitted in the neighborhood of sunspots monitored in H-alpha.

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1974-07-01T00:00:00.000+00:00

The Space Environment Monitor (SEM) Solar X-Ray Sensor (XRS) onboard the GOES satellite series provides solar X-ray irradiances for the wavelength bands of 0.5 to 4 Angstrom (short channel) and 1...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2001-08-13T00:00:00.000+00:00

The Solar X-Ray Imager (SXI) instrument onboard GOES 12-15 is an X-ray telescope used for the early detection of solar flares, coronal mass ejections, and space phenomena that impact flight and...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2018-09-01T00:00:00.000+00:00

These SUVI Level 2 (L2) data are designed for use by the NOAA-NWS Space Weather Forecast Office and include several different products: composite images, thematic maps, bright regions, flare...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2019-04-08T00:00:00.000+00:00

This data collection consists of archived GOES-R Series Extreme Ultraviolet and X-Ray Irradiance Sensors (EXIS) Level 0 data from the operational GOES-East and GOES-West satellites. 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: 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: 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 Aeronautics and Space Administration
• Updated: 2025-04-23

The Fermi Gamma-ray Space Telescope was launched in June 2008 to explore high-energy phenomena in the Universe. This GI program is targeted specifically at Fermi observations of high-energy solar...

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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: 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: 1957-07-01T00:00:00.000+00:00

The decision to publish this volume of Solar Activity Maps (d2) in the Annuals of the International Geophyical Year was taken during the Fifth Meeting of the Special Commitee of Annual Geophysical...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2003-12-17T00:00:00.000+00:00

Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...

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