El Niño-Southern Oscillation and Rainfall Variability in Central and Southern Sudan
作者:Yassin Z. Osman、Asaad Y. Shamseldin、Gamal M. Abdo
DOI:10.1080/02508060108686902
日期:2001.6
In this study, the effects of the El Nino-Southern Oscillation (ENSO) on the rainfall variability in the central (Savannah) and southern (Equatorial) regions of Sudan are examined. The annual rainfall data from 12 rainfall stations for 49 years are used in this examination. The results of the study show that the areal annual regionally averaged rainfall values in the two regions have decreased markedly since the early 1960s, with co-existence between the driest years and the warm ENSO events. The correlation between the annual regional rainfall values and the ENSO events is found to be relatively higher for the Savannah region than for the Equatorial region. Two regional ENSO-rainfall prediction models are developed, one for each region. These models use the ENSO sea surface temperature. The results of the models test show that both models can significantly improve the predictability of the annual rainfall values, which is essential for the planning and the management of water resources in Sudan.
The Structure of Cadinene
作者:William P. Campbell、Milton D. Soffer
DOI:10.1021/ja01254a050
日期:1942.2
The Structure of Isozingiberene
作者:Milton D. Soffer、Claire Steinhardt、Genevieve Turner、Mary E. Stebbins
DOI:10.1021/ja01237a033
日期:1944.9
58. Mechanism of polymerisation. Part III. Experiments relating to the constitution of the solid dimeride and the liquid trimeride of βγ-dimethylbutadiene
作者:Ernest Harold Farmer、Robert C. Pitkethly
DOI:10.1039/jr9380000287
日期:——
4. Mechanism of polymerisation. Part II. Dimerisation of βγ-dimethylbutadiene in presence of an acid catalyst