Short-Period Meteorological Variations

Abstract

NO. 102 of the Publications of the Royal Netherlands Meteorological Institute contains Dr. E. van Rijckevorsel's eleventh communication on the subject of secondary maxima and minima. The author maintains that if sufficient years be taken to mask the long-period variations, and mean values for an elemeit such as temperature or barometric pressure be set down for each day in the year, the resulting figures for any station will show a series of waves of an average period of between ten and eleven days, so that thirty-five maxima appear in the annual curve.