TITLE:
Case Study: Trends and Early Prediction of Rainfall in Jordan
AUTHORS:
Ali Ahmad Ghanem
KEYWORDS:
Rainfall; Standard Deviation; Relationship; Autumn; Jordan
JOURNAL NAME:
American Journal of Climate Change,
Vol.2 No.3,
September
26,
2013
ABSTRACT: Fourteen meteorological stations distributed over Jordan were
selected. Data of annual and monthly rainfall amount of autumn (October and
November) for a period more than 50 years were analyzed to show their
relationships with the normal annual rainfall. An attempt was made
to use the standard deviation values in order to have an early prediction for
the annual rainfall (less or more than the normal) depending on the autumn rainfall
amounts. It is found that the annual rainfall exceeded the normal when autumn rainfall
amounts were more than 30 mm in Jurf El Daraweesh, Qatraneh, Safawi, and
Wadi Musa, 50 mm in Mafraq, 60 mm in Amman, and 100 mm in Salt and
Irbed. Regression analysis projected weak increasing trends in autumn and
decreasing trends in the annual rainfall in the majority of Jordan.