Friday March 26th - Environmental and Water Resources Engineering Graduate Seminar
Hydroclimatic Extremes: Compound Drought and Heatwaves
Dr. Ashok K. Mishra, Associate Professor and Dean’s Professorship
Glenn Department of Civil Engineering, Clemson University
The increase in global temperature has altered the spatio‐temporal pattern of individual extreme events (e.g., drought and heatwave). However, a limited number of studies investigated their compound characteristics in terms of duration, frequency, severity, and spatial extent. This study explores the spatio‐temporal changes in compound events that have a significant impact on health, agriculture, the economy, and the environment around the globe. The compound framework has a key advantage in that it can capture the weekly droughts and heatwaves at a daily time scale. The results can directly map the critical regions and reveal the dependence between two extreme events (i.e., drought and heatwaves). This study also examines the spatial asymmetry across the globe and the influence of background aridity on compound extremes in a warming climate. This analysis can be extended to inform stakeholders where the coevolution of these extreme events is likely to be higher under climate change. The results of this analysis will aid forecasting efforts and help to improve hazard preparedness and mitigation strategies for the vulnerable regions of the globe.
The overall objective of this presentation is to highlight the spatiotemporal changes in the Compound Drought and Heatwave (CDHW) events at a global scale based on the following research questions: (a) how does the recent increase in temperature influence the CDHW events; (b) Is there a significant increase in the proportion of HW days coinciding with the extreme drought conditions? (c) to identify the regions that show a greater increase in the characteristics of CDHW events, and examine if there is spatial asymmetry associated with such growth at the global and hemispherical scale? (d) Whether the background aridity controls the increase in CDHW characteristics at regional to the continental scale; and (e) to provide a mechanistic understanding of the association between the seasonal occurrences of CDHW events and the major modes of climate variability (ENSO, NAO, and PDO).
Each year the Nebraska Alumni Association hosts Alumni Masters who are outstanding alumni that return to campus to share their experiences and knowledge with students. All students are encouraged to take part in lectures, presentations and events with the Alumni Masters, who will speak about ways to apply formal education to working situations and career goals. This year we are hosting a virtual student event this Thursday, March 25 at 5:30 pm with the Alumni Masters.
The Alumni Master representing College of Engineering, Nancy Pridal, is the Chief Executive Officer/President and Board Chair of Lamp, Rynearson – a firm that specializes in civil engineering, landscape architecture and surveying. As a Civil Engineer with a master’s degree in Organizational Leadership, Nancy applies a diverse skillset to drive strategy and organizational change company-wide.
You can find more information about the event, registration, and the 7 outstanding alumni that are participating on our website. The Alumni Masters are so excited to have the opportunity to directly interact with current students so this is a great opportunity to get connected to the best from UNL.
Please join us for a mixer hosted virtually by NUtech Ventures on Thursday, April 8th, 2021, from 4:00-5:30 PM, to meet other faculty, staff, postdocs, and graduate students from various disciplines.
This mixer aims to facilitate interactions among people from different departments and backgrounds, with the hope of developing innovative and interdisciplinary collaborations.
The event will take place over zoom and will consist of 3 structured networking sessions where participants with similar interests will be grouped together. We hope to see you there!
