Mapping the Sun's Atmosphere Into Interplanetary Space: How Recent Changes in the Solar Dynamo are Affecting the Solar Wind Around Us (Invited)

Details Mapping the Sun's Atmosphere Into Interplanetary Space: How Recent Changes in the Solar Dynamo are Affecting the Solar Wind Around Us (Invited) Mapping the Sun's Atmosphere Into Interplanetary Space: How Recent Changes in the Solar Dynamo are Affecting the Solar Wind Around Us (Invited)

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.u34a..04l&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #U34A-04

Astronomy and Astrophysics

Astrophysics

[7500] Solar Physics, Astrophysics, And Astronomy

Scientific paper

The photospheric magnetic field provides the key boundary conditions for the interplanetary medium, including the solar wind plasma and the interplanetary magnetic field. Thus any changes in the solar interior that affect either the emergence, dispersion, and decay of active region magnetic fields, or the evolution of the quiet Sun fields, can have locally measurable effects. Each solar cycle for which we have sufficient solar and in-situ observations has followed a similar pattern, but in the most recent cycle the solar dynamo has produced a generally weaker photospheric field together with a spatial distribution of photospheric flux that differs from the previous two. The result is distinctive interplanetary conditions with solar wind streams and magnetic fields significantly different from earlier space age cycles, and a better appreciation for variations the dynamo has likely caused (and will cause) in our 'space weather'.

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