Validation of TMPA and ECMWF Precipitation Estimates Using Gauge Based Observations over West Azarbayjan province of Iran

2019-11-13
Hesamı Afshar, Mehdı
Amjad, Muhammad
Bulut, Burak
Düzenli, Eren
Patakchi Yousufi, Kaveh
Yılmaz, Mustafa Tuğrul
Uncertainty estimation of precipitation products estimated from different platforms are essential for many hydrological and agricultural applications that use these datasets. Among the precipitation retrieval products satellite- and model-based estimates have the advantage of providing consistent and continuous precipitation records. This study evaluates a satellite-based product (TMPA 3B42V7) and a model-based product (ECMWF 1 daily deterministic forecast) by using 16 ground-based gauges data as reference in the West Azarbayjan province of Iran for a period of January 2007 to May 2015. Precipitation estimates are evaluated for their accuracy, intensity-frequency, and different temporal components (climatology and anomaly). The results show the errors of the products are more governed by the anomaly component than the climatology component, where anomaly component is primarily used for many extreme event analysis like drought. Overall, the ECMWF and TMPA long term biases are 7 mm/mon and -0.25 mm/mon, respectively. On average, ECMWF product show marginally better monthly correlation with observed data than TMPA: for TMPA and ECMWF the correlations are 0.79 and 0.83 respectively for the complete datasets, 0.88 and 0.86 respectively for the climatology components, 0.66 and 0.77 respectively for the anomaly components. TMPA has similar precipitation frequency with the gauge particularly for precipitation events having less than 20mm/day, while ECMWF tends to overestimate the precipitation frequency for events between 1mm/day and 20mm/day. The results show both ECMWF and TMPA products are of good quality for use in different applications over the study region investigated here.
The 1st International and 4th National Congress on Iranian Irrigation and Drainage

Suggestions

Analysis of long term trends of precipitation estimates acquired using radar network in Turkey
Yılmaz, Mustafa Tuğrul; Yücel, İsmail; Yılmaz, Koray Kamil (null; 2016-04-17)
Precipitation estimates, a vital input in many hydrological and agricultural studies, can be obtained using many different platforms (ground station-, radar-, model-, satellite-based). Satellite- and model-based estimates are spatially continuous datasets, however they lack the high resolution information many applications often require. Station-based values are actual precipitation observations, however they suffer from their nature that they are point data. These datasets may be interpolated however such ...
Evaluation of GPM-era Global Satellite Precipitation Products over Multiple Complex Terrain Regions
Derin, Yagmur; Anagnostou, Emmanouil; Berne, Alexis; Borga, Marco; Boudevillain, Brice; Buytaert, Wouter; Chang, Che-Hao; Chen, Haonan; Delrieu, Guy; Hsu, Yung Chia; Lavado-Casimiro, Waldo; Manz, Bastian; Moges, Semu; Nikolopoulos, Efthymios I.; Sahlu, Dejene; Salerno, Franco; Rodriguez-Sanchez, Juan-Pablo; Vergara, Humberto J.; Yılmaz, Koray Kamil (MDPI AG, 2019-12-02)
The great success of the Tropical Rainfall Measuring Mission (TRMM) and its successor Global Precipitation Measurement (GPM) has accelerated the development of global high-resolution satellite-based precipitation products (SPP). However, the quantitative accuracy of SPPs has to be evaluated before using these datasets in water resource applications. This study evaluates the following GPM-era and TRMM-era SPPs based on two years (2014-2015) of reference daily precipitation data from rain gauge networks in te...
Evaluation of the consistency of station-based soil moisture measurements with hydrological model and remote sensing observations over Turkey
Bulut, Burak; Yılmaz, Mustafa Tuğrul; Department of Civil Engineering (2015)
Soil moisture is a critical parameter for many subjects like climate, drought, water and energy balance, weather prediction; yet the number of studies involving soil moisture has been limited in Turkey. Soil moisture parameter can be obtained using several different methods. Among the values obtained via different methods, station-based observations have the greatest potential to provide the most accurate soil moisture information, even though station based observations have the representativeness errors ov...
Evaluation of a satellite-based global flood monitoring system
Yılmaz, Koray Kamil; Tian, Yudong; Hong, Yang; Pierce, Harold F. (2010-01-01)
This study provides an initial evaluation of a global flood monitoring system (GFMS) using satellite-based precipitation and readily available geospatial datasets. The GFMS developed by our group uses a relatively simple hydrologic model, based on the run-off curve number method, to transform precipitation into run-off. A grid-to-grid routing scheme moves run-off downstream. Precipitation estimates are from the TRMM Multi-satellite Precipitation Analysis (TMPA). We first evaluated the TMPA algorithm using a...
Evaluation of Remotely-Sensed and Model-Based Soil Moisture Products According to Different Soil Type, Vegetation Cover and Climate Regime Using Station-Based Observations over Turkey
Bulut, Burak; Yılmaz, Mustafa Tuğrul; Afshar, Mahdı Hesamı ; Sorman, A. Unal; Yücel, İsmail; Cosh, Michael H.; Simsek, Osman (MDPI AG, 2019-08-01)
This study evaluates the performance of widely-used remotely sensed- and model-based soil moisture products, including: The Advanced Scatterometer (ASCAT), the Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E), the European Space Agency Climate Change Initiative (ESA-CCI), the Antecedent Precipitation Index (API), and the Global Land Data Assimilation System (GLDAS-NOAH). Evaluations are performed between 2008 and 2011 against the calibrated station-based soil moisture observations coll...
Citation Formats
M. Hesamı Afshar, M. Amjad, B. Bulut, E. Düzenli, K. Patakchi Yousufi, and M. T. Yılmaz, “Validation of TMPA and ECMWF Precipitation Estimates Using Gauge Based Observations over West Azarbayjan province of Iran,” presented at the The 1st International and 4th National Congress on Iranian Irrigation and Drainage, Urmia, İran, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/92670.