History of solar-terrestrial relations as deduced from spacecraft and geomagnetic data: Solar M regions

This brief history is organized around the long problem of the solar M region, i.e. the structure on the sun that is responsible for recurrent geomagnetic disturbances

Solar Wind Disturbances Associated with Flares

Solar wind disturbances associated with flare

A synoptic approach to sun-weather investigations

The advantages of a regular program of daily observations of the magnetosphere, ionosphere and atmosphere are described. Such synoptic observations may be one of the best routes to understanding the physical mechanisms involved in sun-weather influences. Some specific examples of such observations are given

Why does the sun sometimes look like a magnetic monopole?

For several months in early 1965 the sun appeared to have large scale magnetic field directed outwards at nearly all latitudes and longitudes. Several independent observations that lead to this puzzling situation are discussed

Solar structure and terrestrial weather

The possibility that solar activity has discernible effects on terrestrial weather is considered. Research involving correlation of weather conditions with solar and geomagnetic activity is discussed

Geophysical predications: Sun-weather

The present status of sun-weather research is summarized. Recommendations for future research are given

The extended coronal magnetic field

Coronal magnetic field structure from photosphere to interplanetary spac

The rotation of the Sun: Observations at Stanford

Daily observations of the photospheric rotation rate using the Doppler effect made at the Stanford Solar Observatory since May 1976 are analyzed. Results show that these observations show no daily or long period variations in the rotation rate that exceed the observational error of about one percent. The average rotation rate is the same as that of the sunspot and the large-scale magnetic field structures

Interplanetary sector structure, 1962 - 1966

Properties of interplanetary magnetic field observed by IMP-