TY - JOUR ID - 88776 TI - Evaluation of Spatial and Temporal Variability of the several datasets for precipitation over Iranian watersheds JO - Journal of Range and Watershed Managment JA - JRWM LA - en SN - 5044-2008 AU - Rostami, Maryam AU - Salajegheh, Ali AU - Sharifi, Forood AU - Malekian, Arash AU - MESBAHZADEH, TAYYEBEH AD - PhD Graduate in Watershed Management, Faculty of Natural Resources, University of Tehran, Karaj, Iran AD - Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran AD - Professor of Soil conservation and watershed management Research Institute, Tehran, Iran AD - Associate Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran Y1 - 2022 PY - 2022 VL - 75 IS - 2 SP - 181 EP - 196 KW - Precipitation KW - validation KW - GPCC KW - Watersheds of Iran KW - MSWEP/E2OFD and WFDEI-GPCC/V2/Leap DO - 10.22059/jrwm.2021.281778.1386 N2 - AbstractPrecipitation plays an important role in climatic, water, energy and biogeochemical cycles. Several global and regional data sets currently provide historical estimates of this variable over Iran, including the MWEP and WFDEI forcing datasets and production of some institutions such as MOHC, SMHI and IITM. All these datasets provide data with different resolutions based on gage stations, satellite Images and models output. In this study, we do an inter comparison between these data sets during 1990- 2008. We also validate all ten data sets against independent ground station observations over 30 second-order basins of Iran. MSWEP and WFDEI have an acceptable compatibility with observational data on different spatial and temporal resolutions. RMSE and Bias are 5.68, 6.34 and 0.58, 2.75 for these two datasets during 228 months, respectively. However, it is needed that MSWEP improves in the western and northwestern parts of the country and WFDEI in June and September months. Our findings in this research provide valuable guidance for a variety of stakeholders, including rainfall- runoff and land-surface modelers, watershed management studies and data providers. UR - https://jrwm.ut.ac.ir/article_88776.html L1 - https://jrwm.ut.ac.ir/article_88776_228b739c8f36f8e50d1f0aeb9527a475.pdf ER -