Probabilistic seasonal streamflow forecasts of the Citarum River, Indonesia, based on general circulation models

Autor: Netrananda Sahu, Ram Babu Singh, Andrew W. Robertson, Swadhin K. Behera, Manish Kumar, Kaoru Takara, David G. DeWitt, Rizaldi Boer
Rok vydání: 2016
Předmět:
Zdroj: Stochastic Environmental Research and Risk Assessment. 31:1747-1758
ISSN: 1436-3259
1436-3240
DOI: 10.1007/s00477-016-1297-4
Popis: In this study we discuss probabilistic forecasts of Citarum River streamflow, which supplies 80 % of the water demands in Jakarta, Indonesia, based on general circulation model (GCM) output, for the September–November (SON) season. Retrospective forecasts of precipitation made over the period 1982–2010 with two coupled-ocean atmosphere GCMs, initialized in August, are used in conjunction historical streamflow records, with a cross-validated regression model. Pearson’s product moment correlation skill values of 0.58–0.67 are obtained, with relative operating characteristic scores of 0.67–0.84 and 0.74–0.92 for the lower and upper tercile categories of flows respectively. Both GCMs thus demonstrate promising ability to forecast below/above normal streamflow for the Citarum River flow during the SON season.
Databáze: OpenAIRE