Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 25, issue 5
Articles | Volume 25, issue 5
https://doi.org/10.5194/hess-25-2805-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-25-2805-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 5
Technical note
 | 
26 May 2021
Technical note |  | 26 May 2021

Technical note: Evaluation and bias correction of an observation-based global runoff dataset using streamflow observations from small tropical catchments in the Philippines

Daniel E. Ibarra, Carlos Primo C. David, and Pamela Louise M. Tolentino

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Abon, C. C., David, C. P. C., and Bellejera, N. E. B.: Reconstructing the Tropical Storm Ketsana flood event in Marikina River, Philippines, Hydrol. Earth Syst. Sci., 15, 1283–1289, https://doi.org/10.5194/hess-15-1283-2011, 2011. 
Abon, C. C., Kneis, D., Crisologo, I., Bronstert, A., David, C. P. C., and Heistermann, M.; Evaluating the potential of radar-based rainfall estimates for streamflow and flood simulations in the Philippines, Geomat. Nat. Haz. Risk., 7, 1390–1405, https://doi.org/10.1080/19475705.2015.1058862, 2016. 
Alfieri, L., Lorini, V., Hirpa, F. A., Harrigan, S., Zsoter, E., Prudhomme, C., and Salamon, P.: A global streamflow reanalysis for 1980–2018, J. Hydrol., 6, 100049, https://doi.org/10.1016/j.hydroa.2019.100049, 2020. 
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Dai, A. and Trenberth, K. E.: Estimates of Freshwater Discharge from Conntinents: Latitudinal and Seasonal Variations, J. Hydrometeorol., 3, 660–687, 2002. 
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We evaluate a recently published global product of monthly runoff using streamflow data from small tropical catchments in the Philippines. Using monthly runoff observations from catchments, we tested for correlation and prediction. We demonstrate the potential utility of this product in assessing trends in regional-scale runoff, as well as look at the correlation of phenomenon such as the El Niño–Southern Oscillation on streamflow in this wet but drought-prone archipelago.
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