Consistency of precipitation products over the Arabian Peninsula and interactions with soil moisture and water storage. Issue 3 (17th February 2018)

• Record Type: Journal Article
• Authors: Wehbe, Youssef; Temimi, Marouane; Ghebreyesus, Dawit T.; Milewski, Adam; Norouzi, Hamid; Ibrahim, Elsy
• Is Part Of: Hydrological sciences journal. Volume 63:Issue 3(2018)
• Page Start: 408
• Page End: 425
• Publication Date: 2018-02-17
• Subjects: Arabian Peninsula -- rainfall products -- spatial consistency -- water storage -- soil moisture -- land surface emissivity; Hydrology -- Periodicals; 551.4805
• DOI: 10.1080/02626667.2018.1431647
• Languages: English
• ISSNs: 0262-6667

Abstract

ABSTRACT: The regional-scale consistency between four precipitation products from the GPCC, TRMM, WM, and CMORPH datasets over the Arabian Peninsula was assessed. Their macroscale relationships were inter-compared with soil moisture and total water storage (TWS) estimates from AMSR-E and GRACE. The consistency analysis was studied with multivariate statistical hypothesis testing and Pearson correlation metrics for the period from January 2000 to December 2010. The products and GRACE estimates were assessed over a representative sub-domain (United Arab Emirates) with available in situ well observations. Next, geographically temporally weighted regression (GTWR) was employed to examine the interdependencies among the peninsula's hydrological components. The results showed GPCC-TRMM recording the highest correlation (0.85) with insignificant mean differences over more than 90% of the peninsula. The highest GTWR predictive performance of TWS ( R 2 = 0.84) was achieved with TRMM forcing, which indicates its potential to monitor changes in TWS over the arid peninsular region.