A snapshot of the sun near solar minimum: The whole heliosphere interval

We present an overview of the data and models collected for the Whole Heliosphere Interval, an international campaign to study the three-dimensional solar-heliospheric-planetary connected system near solar minimum. The data and models correspond to solar Carrington Rotation 2068 (20 March-16 April 2008) extending from below the solar photosphere, through interplanetary space, and down to Earth’s mesosphere. Nearly 200 people participated in aspects of WHI studies, analyzing and interpreting data from nearly 100 instruments and models in order to elucidate the physics of fundamental heliophysical processes. The solar and inner heliospheric data showed structure consistent with the declining phase of the solar cycle. A closely spaced cluster of low-latitude active regions was responsible for an increased level of magnetic activity, while a highly warped current sheet dominated heliospheric structure. The geospace data revealed an unusually high level of activity, driven primarily by the periodic impingement of high-speed streams. The WHI studies traced the solar activity and structure into the heliosphere and geospace, and provided new insight into the nature of the interconnected heliophysical system near solar minimum.

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Author Thompson, Barbara
Gibson, Sarah
Schroeder, Peter
Webb, David
Arge, Charles
Bisi, Mario
de Toma, Giuliana
Emery, Barbara
Galvin, Antoinette
Haber, Deborah
Jackson, Bernard
Jensen, Elizabeth
Leamon, Robert
Lei, Jiuhou
Manoharan, Periasamy
Mays, M.
McIntosh, Patrick
Petrie, Gordon
Plunkett, Simon
Qian, Liying
Riley, Peter
Suess, Steven
Tokumaru, Munetoshi
Welsch, Brian
Woods, Thomas
Publisher UCAR/NCAR - Library
Publication Date 2011-12-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:55:11.022435
Metadata Record Identifier edu.ucar.opensky::articles:12103
Metadata Language eng; USA
Suggested Citation Thompson, Barbara, Gibson, Sarah, Schroeder, Peter, Webb, David, Arge, Charles, Bisi, Mario, de Toma, Giuliana, Emery, Barbara, Galvin, Antoinette, Haber, Deborah, Jackson, Bernard, Jensen, Elizabeth, Leamon, Robert, Lei, Jiuhou, Manoharan, Periasamy, Mays, M., McIntosh, Patrick, Petrie, Gordon, Plunkett, Simon, Qian, Liying, Riley, Peter, Suess, Steven, Tokumaru, Munetoshi, Welsch, Brian, Woods, Thomas. (2011). A snapshot of the sun near solar minimum: The whole heliosphere interval. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d76q1xzb. Accessed 25 March 2025.

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