|Studies show Zim to face gradual decrease in rainfall paterns|
|Tuesday, 04 May 2010 14:12|
ÂRecent studies which use global circulation models show that from the current period up to the year 2080, Zimbabwe will face a general decrease, variability, reliability and predictability in rainfall patterns while temperatures will rise by two degrees Celsius. Such a change has a serious consequence on the countryâ€™s food security thus the need for contingency measures to be put in place.
Studies done at the University of Zimbabwe using the global circulation model have revealed that the onset, cessation and durations of effective rainfall seasons have become more variable and unpredictable making it difficult for leaders to advise farmers on the way forward in the face of climate change.
University of Zimbabwe lecturer Dr. Amon Murwira said in the 60s, 70s and 80s, droughts would recur after every 10 years which is different from the current scenario where rainfall has become more unreliable in terms prediction. This has been attributed to global warming as temperatures have risen by 2 degrees Celsius resulting in the shifting of the traditional farming seasons and agro-ecological zones.
He said month on month rainfall patterns indicate that there will be less and less rainfall in December and March hence the need for people to start adapting to the changes.
He however said all is not doomed in the agriculture sector with the decrease in maize growing area in some provinces as research indicated that there will be an increase in the sorghum and cotton growing areas from 20% to 50% and 25% to 30% respectively by 2080. What this implies is that there is need to promote the planting of small grains to mitigate the effects of such changes.