Comparison of Urban Canopy Schemes and Surface Layer Schemes in the Simulation of a Heatwave in the Xiongan New Area

Due to rapid growth and expansion, Xiongan New Area is at risk for heatwaves in the present future induced by urban heat island effect. Based on eight combined schemes, including two common WRF surface layer schemes (MM5 Eta) canopy (SLAB, UCM, BEP + BEM), simulation performance 2-m temperature, relative humidity 10-m wind during a heatwave July 2019 was compared analyzed. The ranked from best worst: humidity, direction speed. MM5 simulate temperature speed better than Eta, but worse. coupling BEM provides highest air worst humidity. Eta produce nearly opposite results Anxin station close Baiyang Lake, lake-land breeze affects findings, worsening correlation between simulated observation.