Evaluation of GSMaP Precipitation Estimates Over Indonesia

  • Agit Setiyoko Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG), Kuta, Bali 80361, Indonesia
  • Takahiro Osawa Regional Satellite Applications Center for Disaster Management (RSCD), Japan Aerospace Exploration Agency (JAXA), 4-1-1 Industrial Technology Institute Asutopia, Ube, Yamaguchi 7550195, Japan
  • I Wayan Nuarsa Department of Agroecotechnologi, Faculty of Agriculture, Udayana University, Denpasar, Bali 80232, Indonesia
DOI: https://doi.org/10.24843/ijeg.2019.v03.i01.p04

Abstract

Generally, observation of the rainfall in Indonesia are still conventionally using rain gauge over Indonesian region. The rain gauge network are still the most reliable source over Indonesia, however this network is not as dense as in the other major continents. The aim of this research were validation and evaluate the annual rainfall periodicity and to obtain the correction factor of the GSMaP rainfall estimation data in Indonesia. Data used in this research are daily rainfall derived from GSMaP_MVK Ver.5 and in-situ data from rain gauge measurement by BMKG from March 2000 to November 2010. The validation showed that the satellite estimate gave an underestimated condition in all of three dominant rainfall characteristics region in Indonesia. The pattern of monthly rainfall time series average based on 40 stations from March 2000 – November 2010 showed quite similar than rain gauge pattern. The relationships of monthly rainfall average showed very good agreement with rain gauge data giving very high correlation (r=0.82 – 0.92) MBE and RMSE was less than 100 mm/month. The result of spectral analysis using DFT also showed a good agreement with rain gauge spectral analysis data on monthly.

Downloads

Download data is not yet available.
Published
2019-06-01
How to Cite
SETIYOKO, Agit; OSAWA, Takahiro; NUARSA, I Wayan. Evaluation of GSMaP Precipitation Estimates Over Indonesia. International Journal of Environment and Geosciences, [S.l.], v. 3, n. 1, p. 26-43, june 2019. ISSN 2549-8878. Available at: <https://ojs.unud.ac.id/index.php/ijeg/article/view/56046>. Date accessed: 27 apr. 2024. doi: https://doi.org/10.24843/ijeg.2019.v03.i01.p04.
Citation Formats
Issue
Vol 3 No 1 (2019)
Section
Articles

Authors who publish with this journal agree to the following terms:

  1. All articles published by International Journal of Environment and Geosciences (IJEG) and Graduate Study of Environmental Sciences, Udayana University are made available under an open access license worldwide immediately. This means everyone has free and unlimited access to the full-text of all articles published in International Journal of Environment and Geosciences (IJEG), and everyone is free to re-use the published material given proper accreditation/citation of the original publication. Open access publication is supported by authors' institutes or research funding agency by payment of a comparatively article processing charge for accepted articles (See Author Fees). International Journal of Environment and Geosciences (IJEG) and Graduate Study of Environmental Sciences, Udayana University publish articles under the Creative Commons Attribution License.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).