Nilometers, El Niño, and climate variability

摘要: Nilometers have been used for gauging the level of water in Nile river more than five millennia. The written records describing some these measurements represent longest any hydrological phenomenon. They describe interannual fluctuations flow which are closely associated with El Nino Here, we use information about long-term variability occurrences that has extracted from to test significance recent trend frequency years. We show observed years during last two decades is rather high compared statistics computed a thousand data; however similar levels activity first millennium.