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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...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
Collection includes a variety of space weather datasets from the National Oceanic and Atmospheric Administration and from the World Data Service for Geophysics, Boulder.
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Collection includes a variety of solar feature datasets contributed by a number of national and private solar observatories located worldwide.
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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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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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Listings and characterizations of solar x-ray flares
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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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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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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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Debrecen Observatory collected white light images from many other observatories.
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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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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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
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...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
These historical sunspot drawings are from the collection of Charles Anthony Schott whie with the U.S.Coastal Survey, which was a predecessor to NOAA.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:43 PM
