Coronal Field Opens at Lower Height During the Solar Cycles 22 and 23 Minimum Periods: IMF Comparison Suggests the Source Surface Should Be Lowered

LOW-LATITUDE CORONAL HOLES AT THE MINIMUM OF THE 23rd SOLAR CYCLE

(2010) Valentyna Abramenko et al.   ASTROPHYSICAL JOURNAL

ON THE WEAKENING OF THE POLAR MAGNETIC FIELDS DURING SOLAR CYCLE 23

(2009) Y.-M. Wang et al.   ASTROPHYSICAL JOURNAL

Solar Wind Sources in the Late Declining Phase of Cycle 23: Effects of the Weak Solar Polar Field on High Speed Streams

(2009) J. G. Luhmann et al.   SOLAR PHYSICS

Automated detection of EUV Polar Coronal Holes during Solar Cycle 23

(2009) M. S. Kirk et al.   SOLAR PHYSICS

Effects of the Weak Polar Fields of Solar Cycle 23: Investigation Using OMNI for the STEREO Mission Period

(2009) C. O. Lee et al.   SOLAR PHYSICS

Direct observation of cloud forcing by ground-based thermal imaging

(2008) Stephen Smith et al.   GEOPHYSICAL RESEARCH LETTERS

Weaker solar wind from the polar coronal holes and the whole Sun

(2008) D. J. McComas et al.   GEOPHYSICAL RESEARCH LETTERS

The Solar Wind at 1 AU During the Declining Phase of Solar Cycle 23: Comparison of 3D Numerical Model Results with Observations

(2008) C. O. Lee et al.   SOLAR PHYSICS