DUST HAZE AND THE ENVIROMENT IN DRY SEASOPERIOD. (A CASE STUDY OF RIJAU ANn ITS ENVIROMENT)'

Abstract

ABSTRACT Harmattan Dust Haze particles are very fine particles which can remain airborne of a considerable period 0 f time. Data used for it this study were obtained from vanous from sources. The Harmattan dust haze data covering 27 years were obtained Crom the i'vletcornlogical Department at Minna International airport Minna. Minimum and ·1~l.\ill1L11ll temperature were also obtained. Geographically derived methods were employed in carryll1g OLlt the data analysis, the maximum I :-iarmaltan dust haze (hourly, daily, monthly or annually) \\ as extracted from the main data set \vhich covered 1980 to 1990. These l1la.\il1lum Harmattan dust haze serve as the thick dust haze. The minimum Harmattan dust haze also extracted from the main Harillattan dust haze were also regarded as the slight dust haze. . The combination 0 C these extracted data sets serve as the trends 0 r llarlllattan dust haze in Rijau. Graph were plotted to .indicate periods thick and sl ight dust haze. From what has been done so far, it is clearly seen that Harmattan dust haze is on increase, and the study area always recorded the highest thick dust haze between 0900 and 1200 hours of the day. ------