THE Tanzania Meteorological Agency (TMA) has predicted possible La Nina weather phenomenon during October and December, meaning dry spells are more likely to dominate over most areas in the country.
TMA Director General, Dr Agnes Kijazi,
told a press conference in Dar es Salaam yesterday that most parts of
the country were also expected to experience below normal rains
associated with late onset of short rainfall season (Vuli) 2016.
“A weak La Nina and cooling ocean
temperatures in the Indian Ocean indicate that less humid air masses are
likely to occur over the country during much of the October to
December,” said the TMA boss.
Dr Kijazi explained that the weather
conditions were likely to result in inadequate moisture for crop
production; pointing out that such a condition could adversely impact
crop production and pastures for livestock.
“Farmers are, therefore advised, to
prepare their farms and acquire agricultural inputs early enough while
making appropriate land use management and right choice of crop
varieties,” she pointed out.
Dr Kijazi noted that farmers should
store and plan proper use of available yield so as to sustain their
household in case of shortage of foods and that disaster management
authorities should take necessary measures such as good practice of
environmental conservation.
She added that soil moisture levels were
likely to be suppressed due to expected frequent dry spells and that
normal cropping season in most parts of the country may be affected.
“River flow discharges and water levels
in rivers and dams are likely to drop from current levels during the
‘Vuli’, 2016 season, due to shortage of rains in most river catchment
areas,” she observed.
Dr Kijazi cautioned over the outbreak of
water-borne diseases because of water shortage and poor sewerage
management as well as the increased likelihood of insufficient pasture
in most livestock keeping and agricultural areas.
“The drying of livestock water infrastructures such as dams and boreholes are also expected to occur in most areas,” she said.
Dr Kijazi mentioned the few areas
expected to experience sufficient rainfall as the Lake Victoria Basin
regions (Kagera, Mara, Mwanza, Geita, Mara, Simiyu and Shinyanga) and
the southern parts of the country, including Mtwara and Lindi.
“The rains in Lake Victoria Basin are
expected to start during the first week of October in Kagera Region and
then extend to other regions in the zone. The rains are expected to be
normal to below normal in most parts of Kagera, Mwanza and Geita
regions,” she reported.
- It is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño–Southern Oscillation climate pattern.
- The name La Niña originates from Spanish, meaning “the girl”, analogous to El Niño meaning “the boy”. It has also in the past been called anti-El Niño, and El Viejo (meaning “the old man”).
- La Nina impacts the global climate and disrupts normal weather patterns, which as a result can lead to intense storms in some places and droughts in others
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