Daily rainfall data to identify trends in rainfall amount and rainfall-induced agricultural events in the Nuba Mountains of Sudan

摘要

Widely variable inter- and intra-seasonal rainfall increases risks of agricultural production in the Nuba Mountains of Sudan, which are one of the country's most vulnerable areas with respect to climate change. This study aims to identify trends in rainfall amount at different temporal resolutions as well as changes and probabilities of rainfall-induced agricultural events. Long-term daily rainfall records (60 years) from two weather stations, Kadugli and Rashad, were computed to daily, monthly and annual values and rainfall-induced events were computed using the INSTAT + software. Subsequently, these calculated values and events were checked for possible monotonic trends from 1950 to 2009 and 1970 to 2009 by Mann-Kendall tests.