Figure 24From: Short-term variability of the Sun-Earth system: an overview of progress made during the CAWSES-II periodScatter plots between solar wind (SW) speed and coronal hole parameters. (a) Coronal hole area in EUV, (b) coronal hole area that shows microwave enhancement (ME), (c) EUV intensity averaged over the coronal hole area, (d) and the microwave brightness temperature (Tb) averaged over the ME area (from Akiyama et al. 2013).Back to article page