22'MAX China Meridian Chain of Geomagnetic and Aeronomic Observatories

The 22'MAX China Meridian Chain of Geomagnetic and Aeronomic Observatories is briefly introducted. The purpose of this chain is to provide the sround-based data for studying(1) the coupling between the sol??? wind, magnetosphere, ionosphere and nuetral atmosphere,(2) the behaviour and the role of the mid-low latitude ionosphere and magnetosphere in the energy coupling processes,(3) large-scale magnetospheric-ionospheric current systems at mid-low latitudes during various solar-terrestrial events,(4) geomagnetic micropulsations at mid-low latitudes and their generation, propagation and related plasma instabilities,(5) whistler and VLF emission and related wave-partical interaction,(6) the geomagnetic main field, in particular, the East Asia anomaly.