Statistical Comparison of Daily Satellite Precipitation Data in Middle Alborz

Ghaljaee, Esmatullah; Khalighi-Sigaroodi, Shahram; Moghaddam Nia, Alireza; Malekian, Arash

doi:10.22059/jrwm.2023.274312.1344

Document Type : Research Paper

Authors

¹ Department of Reclamation of Arid & Mountainous Regions, Faculty of Natural Resources, University of Tehran, Karaj, Iran.

² Department of Reclamation of Arid & Mountainous Regions, Faculty of Natural Resources, University of Tehran, Karaj, Iran

10.22059/jrwm.2023.274312.1344

Abstract

Reliable estimation of precipitation is one of the most essential needs in water resources management. However, in many parts of the world, especially in Iran, the lack of time and place of rainfall data is very noticeable. Therefore, the use of satellite information is one of the ways to compensate for the lack of information. The purpose of this research is to compare the accuracy of rainfall information of TRMM-3B42 and PERSIANN-CDR products on a daily scale. The products of these two satellites are available daily for free in the pixel size of 0.25 degrees. The daily rainfall of 12 stations in the southern slopes of Alborz in a statistical period of 2000-2014 was used. The results show that these two satellite products are not the same in different statistical parameters, so that CDR and 3B42 have estimated 100% and 25% more rainfall events than the stations, respectively. Also, PERSIANN satellite is significantly superior to 3B42 in terms of RMSE, POD and CSI parameters, but on the other hand, it is weaker in terms of Bias and FAR parameters. Therefore, the selection of the desired satellite product should be based on the proper parameters.

Keywords

20.1001.1.50442008.1399.76.1.1.0

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Journal of Range and Watershed Managment

Statistical Comparison of Daily Satellite Precipitation Data in Middle Alborz

References

References

Volume 76, Issue 1
June 2023
Pages 1-14

Statistical Comparison of Daily Satellite Precipitation Data in Middle Alborz

References

References

Volume 76, Issue 1June 2023Pages 1-14

Volume 76, Issue 1
June 2023
Pages 1-14