edu.ucar.opensky::articles:26253 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:35:55.563480 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7s75m92 Anatomy of a Summertime Convective Event over the Arabian Region 2023-04-01T00:00:00Z publication https://n2t.org/ark:/85065/d7s75m92 https://doi.org/10.1175/MWR-D-22-0082.1 Gopalakrishnan, D. author Taraphdar, S. author Pauluis, O. M. author Xue, L. author Ajayamohan, R. S. author Al Shamsi, N. author Chen, S. author Lee, J. A. author Grabowski, W. W. author Liu, C. author Tessendorf, S. A. author Rasmussen, R. M. author UCAR/NCAR - Library publisher This study investigates the structure and evolution of a summertime convective event that occurred on 14 July 2015 over the Arabian region. We use the WRF Model with 1-km horizontal grid spacing and test three PBL parameterizations: the Mellor-Yamada-Nakanishi-Niino (MYNN) scheme; the Asymmetrical Convective Model, version 2, (ACM2) scheme; and the quasi-normal scale-elimination (QNSE) scheme. Convection initiates near the Al Hajar Moun-tains of northern Oman at around 1100 local time (LT; 0700 UTC) and propagates northwestward. A nonorographic con-vective band along the west coast of the United Arab Emirates (UAE) develops after 1500 LT as a result of the convergence of cold pools with the sea breeze from the Arabian Gulf. The model simulation employing the QNSE scheme simulates the convection initiation and propagation well. Although the MYNN and ACM2 simulations show convective ini-tiation near the Al Hajar Mountains, they fail to simulate the development of the convective band along the UAE west coast. The MYNN run simulates colder near-surface temperatures and a weaker sea breeze, whereas the ACM2 run simu-lates a stronger sea breeze but a drier lower troposphere. Sensitivity simulations using horizontal grid spacings of 9 and 3 km show that lower-resolution runs develop broader convective structures and weaker cold pools and horizontal wind divergence, affecting the development of convection along the west coast of the UAE. The 1-km run using the QNSE PBL scheme realistically captures the sequence of events that leads to the moist convection over the UAE and adjacent mountains. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright and other restrictions information is unknown. None eng geoscientificInformation