Based on the ECMWF global objective analysis of 7-level mean geopotential height anomaly, a study is made of the simultaneous correlations of the corresponding points of these level with the sea surface level as the base for December, January and February (DJF) and June, July and August (JJA), respectively. Results show that the barotropy and baroclinity change greatly geographically, as shown in the height departures, with remarkable seasonality:the DJF lower troposphere anomaly is marked by higher (poor) equivalent barotropy over the oceans (continent); the upper troposhere circulation anomaly is illustrated by a high-value region of correlation coefficient around the equator and a low area dominating subtropics; the correlation pattern between the circulation departure fields of the low and upper troposphere indicates that a high region is not always over the waters and a strongest negative correlation center arises in the tropical eastern Pacific. Its comparison to the JJA pattern reveals that a particular significant seasonality occurs in Africa and the tropical Indian Ocean with a DJF vigorous barotropic sector and a JJA baroclinic one, respectively.