TITLE:
Analysis of Changes of Extreme Temperature during June to August Season over Tanzania
AUTHORS:
Justus Renatus Mbawala, Huixin Li, Jiani Zeng, Daudi Mikidadi Ndabagenga, Anqin Tan, Daniela Janine Beukes, Praksed Mrosso Rafael, Samuel Ekwacu
KEYWORDS:
Indices, Warm Days and Nights, Cold Days and Nights, ECA&D, Tanzania
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.12 No.2,
February
21,
2024
ABSTRACT: Natural and human systems are exposed and vulnerable to climate extremes,
which contributes to the repercussions of climate variability and the probability
of disasters. The impacts of both natural and human-caused climate variability are
reflected in the reported changes in climate extremes. Particularly at the local
community levels in the majority of the regions, there is currently a dearth of
information regarding the distribution, dynamics, and trends of excessive temperatures
among the majority of Tanzanians. Over the years 1982-2022, this study examined trends in Tanzania’s extreme
temperature over the June to August
season. Based on the distinction between absolute and percentile extreme
temperatures, a total of eight ETCCDI climate indices were chosen. Mann-Kendall
test was used to assess the presence of trends in extreme climatic indices and the
Sen’s Slope was applied to compute the extent of
the trends in temperature extremes. The study showed that in most regions, there is significant increase of warm days and nights while the significant decrease
of cold days and nights was evident to most areas. Moreover, nighttime warming surpasses
daytime warming in the study area. The study suggests that anthropogenic influences
may contribute to the warming trend observed in extreme daily minimum and maximum
temperatures globally, with Tanzania potentially affected, as indicated in the current
research. The overall results of this study reflect patterns observed in various
regions worldwide, where warm days and nights are on the rise while cold days and
nights are diminishing.