Solar Radiation Alert System / Kyle Copeland, Herbert H. Sauer, Wallace Friedberg.

Format:

Book

Government document

Author/Creator:

Copeland, Kyle.

Contributor:

Sauer, Herbert H.

Friedberg, W.

United States. Office of Aerospace Medicine

Civil Aerospace Medical Institute

National Geophysical Data Center

Language:

English

Subjects (All):

Solar radiation--Measurement.

Solar radiation.

Solar flares.

Space environment.

Coronal mass ejections.

Physical Description:

1 online resource [28] pages

Edition:

Rev. 30 May 2008.

Place of Publication:

Washington, D.C. : Federal Aviation Administration, Office of Aerospace Medicine ; [Fort Belvoir, Va.] : [Defense Technical Information Center, distributor], [2009]

Summary:

The Solar Radiation Alert (SRA) system continuously evaluates measurements of high-energy protons made by instruments on GOES satellites. If the measurements indicate a substantial elevation of effective dose rates at aircraft flight altitudes, the Civil Aerospace Medical Institute issues an SRA via the National Oceanic and Atmospheric Administration Weather Wire Service. This report describes a revised SRA system. SRA issue-criteria remain the same but significant improvements have been made in the calculations. The solar proton fluence to effective dose conversion coefficients have been recalculated using 2007 recommendations of the International Commission on Radiological Protection and the latest release of the Monte Carlo transport code, MCNPX 2.6.0. The shape of the <10 MeV secondary neutron spectrum is now accounted for down to 100 eV. The flux correction based on spectral index has been revised to smooth the flux spectrum of solar protons. Estimates of the>605 MeV spectral shape have been improved by the addition of correction factors for the differential interpretation of the>700 MeV integral flux channel. Estimates of galactic cosmic radiation background count rates in the GOES data are now median rather than mean values. Estimated solar cosmic radiation dose rates are about 10 times higher than those made using the previous version of the SRA system.

Participant:

Performed by Civil Aerospace Medical Institute and National Geophysical Data Center.

Notes:

Title from title screen (viewed March 11, 2010).

"Final report."

"March 2009."

Includes bibliographical references (pages 11-13).

"DOT/FAA/AM-09/6."

Other Format:

Paper version: Copeland, Kyle. Solar Radiation Alert System.

OCLC:

426122941