STABILITY IN THE LAW OF CHANGE FOR SOME CLIMATE FACTORS IN NAM BO PLAIN UNDER CLIMATE CHANGE CONTEXT

Abstract

This study assessed the spatial and temporal variation characteristics for some climatic factors at Nha Be and Can Tho meteorological stations, representing regions of the Nam Bo plain. Because meteorological factors in period of 2013-2017 mostly did not follow the normal distribution, the non-parametric Wilcoxon Signed Ranks, Kruskal-Wallis and Dunn with Bonferroni correction, Mann-Kendal and Sen test were used. The results demonstrated that although the significant difference in the values ​​of most of the climatic parameters at the above stations concentrated into the dry season, but relative air humidity and total rainfall still closely maintained a seasonal change (May and December annually). The changes in average humidity and precipitation (increasing), evaporation (decreasing) were statistically significant, but the mean temperature did not significantly change. Study results had proved that seasonal variation still exists quite stable in a number of climatic factors in the Nam Bo plain.