Solar CoronaAlternate Views: Get Data, FAQ, ISO Rubric, DOI Rubric, CSW, HTML, Components, XML
Solar Corona
Downloadable Data
The solar corona is the outermost layer of the sun’s atmosphere--a very hot halo (millions of degrees), that, in the form of the solar wind, extends well past the Earth’s orbit. The corona is observed in detail during solar eclipses. In practice, the corona is observed routinely by ground-based and satellite coronagraphs in the red line Fe X (634.7nm -- ten times ionized iron line) and the green line Fe XIV (530.3 nm -- 14 times ionized iron line), and occasionally in the high energy yellow line Ca XV (569.4 nm -- 15 times ionized Calcium line). White light observations of the solar corona are also made routinely, and used for detecting coronal mass ejections (CMEs) that may affect the Earth. The coronagraph is a special telescope with an occulting disk to block the direct light of the sun and thus able to measure the brightness of the fainter and less dense corona. The intensities are recorded in tabular form, historically in 5-degree increments around the sun’s disk. The data center holds data in analog form from 12 stations covering the period 1943 to present. Currently, 2 stations send daily coronal scans to the data center. A coronal activity index from Lomnicky Stit, Slovak Republic, 1939-present, is also available. Coronal data exhibit the 11 year solar cycle variation. Solar X-ray measurements since 1991 by the Yohkoh and GOES Solar X-ray Imager (SXI) satellites allow continuous coverage of the constantly changing hot solar corona.

Get the Data
AccessFormat(s)Distributor(s) / Contact InfoInstructions / Constraints
Format version: (version is unknown)
Solar Data Manager
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Contact Data Center
303.497.6133 or 303.497.6323
7:30 - 4:30 Mountain
Depends on amout of data requested.

Free downloads

Ordering Instructions
Non-Digital Form: Paper Pages Ordering Instructions: Prepay by check, money order or bank card. There is a standard handling charge, with additional costs for special handling. Orders may be placed via fax, email, regular mail or telephone.

Ordering Instructions: Data may be download.

Legal Constraints

Use Limitation

Access Constraints: No Constraints Use Constraints: None Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.