Name: Madeline Clark Frank Title: Atmospheric Conditions Preceding Very Rapid Sea Ice Loss Events Location: TBD Date: 2019/10/16 Time: 3:00 PM Series: Weather and Climate Systems Abstract: As Arctic sea ice continues to decline and resources in that region become more accessible, there is a growing need to understand the dynamics of Arctic sea ice. In […]
Name: Daniel Phoenix Title: Simulated Impacts of Tropopause-Penetrating Convection on the Chemical Composition of the Upper Troposphere and Lower Stratosphere Location: NWC 5930 Date: 2019/10/2 Time: 03:00 PM Series: Weather and Climate Systems Abstract: Tropopause-penetrating convection is capable of rapidly transporting air from the lower troposphere to the upper troposphere and lower stratosphere (UTLS). Since the […]
Convective Meteorology (Mesoscale Dynamics) Seminar Improving High-Resolution Tropical Cyclone Prediction using a Cycled, GSI-Based Hybrid Ensemble-Variational Data Assimilation System for HWRF with Vortex Scale Observations Xu Lu Friday, September 27th NWC 5600/3:00pm A GSI-based, continuously cycled, dual-resolution hybrid EnKF-Var DA system is developed for the HWRF Model. The newly developed DA system is […]
Name: Elisa Murillo Title: A 22-Year Hail Climatology using GridRad MESH Observations Location: NWC 5930 Date: 2019/09/18 Time: 03:00 PM Series: Weather and Climate Systems Abstract: Severe hail accounts for the vast majority of severe weather-induced property loss in the United States each year. Assessments of spatial and temporal hail fall characteristics using hail reports are […]
Title: A mechanism for extraordinary wind gusts in tropical cyclones Abstract: Some extreme values of gust factor have been measured within the eyewalls of tropical cyclones, where gust factor is defined as the ratio of peak wind speed to average wind speed. In the famous case of Cyclone Olivia in Australia in 1996, a […]
Name: Yongjie Huang Title: What caused the maximum daily rainfall of 524.1 mm and hourly rainfall of 184.4 mm during a severe local storm? Location: NWC 1350 Date: 2019/09/12 Time: 03:00 PM Series: Convective Meteorology (Mesoscale Dynamics) Abstract: During May 6-7, 2017, an extreme rainfall occurred in the coastal metropolitan city of Guangzhou, southern China. A […]
