What is another word for diurnal variation?
Pronunciation: [dˈɪɜːnə͡l vˌe͡əɹɪˈe͡ɪʃən] (IPA) 
Diurnal variation refers to the fluctuations in a biological, physical or chemical parameter over the course of a day. This phenomenon is widely studied in fields like ecology, medicine, meteorology and geology. There are several synonyms for diurnal variation, including daily changes, circadian rhythms, daily variations, daily rhythms and 24-hour cycles. These terms all describe the same pattern of changes that occur within a 24-hour period. Monitoring diurnal variation is important for understanding biological processes and for predicting weather patterns. By studying these patterns, researchers can gain insight into how different systems operate over a given period of time.
