Version 1
: Received: 17 March 2020 / Approved: 19 March 2020 / Online: 19 March 2020 (02:37:37 CET)
How to cite:
Zhang, G.; Su, X.; Ayantobo, O. O.; Feng, K.; Guo, J. Evaluation of Open Access Precipitation and Temperature Products Using SWAT in Shiyang River Basin, Northwest China. Preprints2020, 2020030294. https://doi.org/10.20944/preprints202003.0294.v1
Zhang, G.; Su, X.; Ayantobo, O. O.; Feng, K.; Guo, J. Evaluation of Open Access Precipitation and Temperature Products Using SWAT in Shiyang River Basin, Northwest China. Preprints 2020, 2020030294. https://doi.org/10.20944/preprints202003.0294.v1
Zhang, G.; Su, X.; Ayantobo, O. O.; Feng, K.; Guo, J. Evaluation of Open Access Precipitation and Temperature Products Using SWAT in Shiyang River Basin, Northwest China. Preprints2020, 2020030294. https://doi.org/10.20944/preprints202003.0294.v1
APA Style
Zhang, G., Su, X., Ayantobo, O. O., Feng, K., & Guo, J. (2020). Evaluation of Open Access Precipitation and Temperature Products Using SWAT in Shiyang River Basin, Northwest China. Preprints. https://doi.org/10.20944/preprints202003.0294.v1
Chicago/Turabian Style
Zhang, G., Kai Feng and Jing Guo. 2020 "Evaluation of Open Access Precipitation and Temperature Products Using SWAT in Shiyang River Basin, Northwest China" Preprints. https://doi.org/10.20944/preprints202003.0294.v1
Abstract
Precipitation and temperature are significant inputs for hydrological models. Currently, many satellite and reanalysis precipitation and air temperature datasets exist at different spatio-temporal resolutions at a global and quasi-global scale. This study evaluated the performances of three open-access precipitation datasets (gauge-adjusted research-grade Global Satellite Mapping of Precipitation (GSMaP_Gauge), Climate Hazards Group Infrared Precipitation with Station data (CHIRPS), Climate Forecast System Reanalysis(CFSR)) and CFSR air temperature dataset in driving the Soil and Water Assessment Tool (SWAT) model required for the monthly simulation of streamflow in the upper Shiyang River Basin of northwest China. After a thorough comparison of six model scenarios with different combinations of precipitation and air temperature inputs, the following conclusions were drawn: (1) Although the precipitation products had similar spatial patterns, however, CFSR differs significantly by showing an overestimation; (2) CFSR air temperature yielded almost identical performance in the streamflow simulation than the measured air temperature from gauge stations; (3) among the three open-access precipitation datasets, CHIRPS produced the best performance. These results suggested that the CHIRPS precipitation and CFSR air temperature datasets which are available at high spatial resolution (0.05), could be a promising alternative open-access data source for streamflow simulation in the case of limited access to desirable gauge data in the data-scarce area.
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
