Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft

Details Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsa11a..05k&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SA11A-05

Other

2427 Ionosphere/Atmosphere Interactions (0335), 2479 Solar Radiation And Cosmic Ray Effects, 2736 Magnetosphere/Ionosphere Interactions

Scientific paper

Recurrent and powerful high speed streams were responsible for driving a large portion of the magnetic activity during the year 2003. High speed streams in this year were among the most geoffective of the entire solar cycle due both to their long-durations (10's of days) and high velocities. In addition, the polar coronal holes, that provided the source of the high speed streams, also contributed to a significant variation in solar EUV radiation by covering a large fraction of the solar disc each rotation. The TIMED spacecraft with ground-based collaborators made comprehensive measurements of the atmospheric response to these strong, long-duration energy inputs. Initial analysis indicates an interesting coupling between variations in the EUV radiation and solar wind inputs in producing the atmospheric response. The decrease in solar EUV (due to the presence of the coronal hole on the solar disc) begins to precondition the atmosphere several days before the fast coronal hole wind hits the Earth, causing the atmosphere to cool and increasing the O/N2 ratio. Long intervals of recurrent substorm activity triggered by the high speed streams deposit energy in this preconditioned atmosphere. Models indicate that the effects of magnetic activity penetrate deeper in altitude and lower in latitude in such a cooler atmosphere. In addition, enhancements in NO and other changes in atmospheric chemistry driven by the recurrent long-duration substorm activity may not recover before the next high speed stream hits, making for weeks long perturbations. There are also indications that mesospheric tides may be modulated in some way by the high speed stream inputs.

Affiliated with

Also associated with

No associations

Rating

Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atmospheric Effects of Coronal Holes and Powerful High-Speed Solar Wind Streams in 2003 Observed by the TIMED Spacecraft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1689637