SOME ASPECTS OF THE CIRCULATION DURING THE PERIODS OF THE PERSISTFNT DROUGHT AND FLOOD IN YANTZE AND HWAI-HO VALLEYS IN SUMMER

In this paper an analysis is presented concerning the circulation characteristics during the periods of the persistent drought and flood in Yantze and Hwai-Ho Valleys in summer. It is found that during either the period of the drought or that of flood there is a definite pattern of anomalous in the general circulation both in middle latitudes and in subtropical latitudes, and the anomalous are extremely persistent. It is this high persistence of anonialous which is responsible for the extreme summertime drought and flood in Yantze and Hwai-Ho Valleys.