Probabilistic Precipitation Forecast in (Indonesia) Using NMME Models: Case Study on Dry Climate Region

Heri Kuswanto*, Dimas Rahadiyuza, Dodo Gunawan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Reliable precipitation forecast is one of the key inputs to generate accurate and reliable hydrological forecast. This paper uses the North American Multimodel Ensemble (NMME) models to generate seasonal precipitation forecasts in Indonesia. The NMME models are verified against observed precipitation, and the analysis shows that they are biased and underdispersive. The Bayesian Model Averaging (BMA) approach was applied to calibrate the forecast for reliable prediction. East Nusa Tenggara (NTT) is chosen as the pilot study since the region has been well recognized as a dry region with the highest degree of vulnerability toward drought. The results show that the BMA improves the forecast reliability. Moreover, the Canadian Meteorological Center (CMC) models outperform the others. The map of the forecasted Standardized Precipitation Index (SPI) is validated with the observation and shows a high prediction accuracy.

Original languageEnglish
Title of host publicationAdvances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources - Proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences, CAJG-1 2018
EditorsHelder I. Chaminé, Maurizio Barbieri, Ozgur Kisi, Mingjie Chen, Broder J. Merkel
PublisherSpringer Nature
Pages13-16
Number of pages4
ISBN (Print)9783030015718
DOIs
Publication statusPublished - 2019
Event1st Springer Conference of the Arabian Journal of Geosciences, CAJG-1 2018 - Hammamet, Tunisia
Duration: 12 Nov 201815 Nov 2018

Publication series

NameAdvances in Science, Technology and Innovation
ISSN (Print)2522-8714
ISSN (Electronic)2522-8722

Conference

Conference1st Springer Conference of the Arabian Journal of Geosciences, CAJG-1 2018
Country/TerritoryTunisia
CityHammamet
Period12/11/1815/11/18

Keywords

  • Calibration
  • Drought
  • Hydrology
  • NMME
  • Underdispersive

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