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DTSTART;TZID=America/New_York:20221007T125000
DTEND;TZID=America/New_York:20221007T134000
DTSTAMP:20260421T140132
CREATED:20220906T151049Z
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SUMMARY:EWC Seminar by Daniel Westervelt (Columbia University) - Air pollution and climate change in Africa: From low-cost sensors to supercomputers
DESCRIPTION:Environmental\, Water Resources\, and Coastal Engineering Seminar Series \nFitts-Woolard Hall 2331 \nAir pollution and climate change in Africa: From low-cost sensors to supercomputers \nAbstract: In Africa\, air pollution exposure has been linked to 1 million premature deaths annually and\, without intervention\, these numbers are likely to climb. Sparse pollutant monitoring across the continent makes these estimates uncertain and also hinders the development of mitigation policies and regulations. Additionally\, some of the most severe climate impacts are also felt in Africa\, despite the continent’s relatively small contribution to global greenhouse gas emissions. This talk will highlight some recent efforts to close the air pollution data gap in Africa using a variety of methods spanning from traditional reference monitors\, to consumer-grade low-cost sensors\, to satellite retrievals\, and to air quality and climate models. In particular we demonstrate the effectiveness of well-calibrated low cost particulate matter sensors in several previously-unmonitored megacities including Kinshasa (DRC)\, Lomé (Togo)\, Accra (Ghana)\, Nairobi (Kenya)\, and more. We find that many consumer-grade Plantower-based low-cost PM2.5 monitoring devices\, such as PurpleAir\, Clarity\, and QuantAQ\, perform well (r-squared ~ 0.6\, MAE ~ 7 µg m-3) compared to locally available reference monitors\, but can be improved dramatically (r-squared ~ 0.8\, MAE ~ 2) using a variety of statistical methods\, including linear regression\, random forest regression\, and Gaussian mixture regression. These well-calibrated sensors form the basis of dense urban networks of PM2.5 monitors in several African megacities\, for example in Kinshasa (DRC)\, where the annual mean PM2.5 in 2019 was approximately 45 µg m-3\, or ~8 times the WHO annual guideline. This talk will also present some research that leverages well-calibrated low-cost sensors and reference monitors to evaluate and improve the Africa region GEOS-Chem nested high-resolution model (25km x 25km). We also demonstrate the potential of fusing satellite data with ground-based observations using machine learning to develop high spatiotemporal resolution PM2.5 datasets\, which may be useful in policy and health settings in addition to model evaluation. Finally\, I will present climate modeling results that quantify how both local and remote aerosol emissions changes can have a substantial impact on African climate\, in particular rainfall in the drought-stricken Sahel region of Africa.\n \nBiography: Daniel Westervelt is currently a Lamont Assistant Research Professor at Columbia University’s Lamont Doherty Earth Observatory in Palisades\, NY. In addition\, he is a Columbia University Climate and Life Fellow leading a project on air pollution and climate change in Africa. He is also an affiliated scientist with the NASA Goddard Institute of Space Studies in New York\, NY\, and an air pollution advisor to the US State Department. I am an affiliate faculty of the Columbia University Data Science Institute. Prior to Lamont\, Dr. Westervelt worked as a Science\, Technology\, and Environmental Policy (STEP) postdoctoral research associate at Princeton University. He completed his PhD degree in May 2013 in Civil and Environmental Engineering from Carnegie Mellon University.
URL:https://ccee.engr.it/event/ewc-seminar-by-daniel-westervelt-columbia-university-air-pollution-and-climate-change-in-africa-from-low-cost-sensors-to-supercomputers/
LOCATION:Fitts Woolard Hall 2331\, 915 Partners Way\, Raleigh\, NC\, United States
CATEGORIES:Appear On Homepage,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220923T125000
DTEND;TZID=America/New_York:20220923T134000
DTSTAMP:20260421T140132
CREATED:20220906T145507Z
LAST-MODIFIED:20220906T145507Z
UID:10000922-1663937400-1663940400@ccee.engr.it
SUMMARY:EWC Seminar by Matthew Verbyla (San Diego State University): Using Data Analytics and Learning to Attenuate Inequities in Engineering Classrooms; A Teacher-Scholar Approach
DESCRIPTION:Environmental\, Water Resources\, and Coastal Engineering Seminar Series \nFitts-Woolard Hall 2331 \nUsing Data Analytics and Learning to Attenuate Inequities in Engineering Classrooms: A Teacher-Scholar Approach
URL:https://ccee.engr.it/event/ewc-seminar-by-matthew-verbyla-san-diego-state-university-using-data-analytics-and-learning-to-attenuate-inequities-in-engineering-classrooms-a-teacher-scholar-approach/
LOCATION:Fitts Woolard Hall 2331\, 915 Partners Way\, Raleigh\, NC\, United States
CATEGORIES:Appear On Homepage,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220916T125000
DTEND;TZID=America/New_York:20220916T134000
DTSTAMP:20260421T140132
CREATED:20220906T143247Z
LAST-MODIFIED:20220912T030559Z
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SUMMARY:EWC Seminar by Ricardo Morales (Universidad de los Andes): Air quality challenges in Northern South America; From the synoptic to the micro scale
DESCRIPTION:Environmental\, Water Resources\, and Coastal Engineering Seminar Series \nFitts-Woolard Hall 2331 \nAir quality challenges in Northern South America: From the synoptic to the micro scale \nAbstract: The processes shaping air pollution span many spatial scales. In the large and densely populated cities of Latin America\, one of the most rapidly urbanizing areas in the world\, day-to-day exposure to particulate pollution is often dominated by mobile sources in the near-road environment. However\, the seasonality of air pollution in the region is controlled by the long-range transport of smoke plumes from wildfires and agricultural burns. In this talk\, we will discuss how\, by using modeling and observational tools\, we can better understand the nature of air pollution in Northern South America\, identify its more pressing challenges\, and characterize the rapid transformations it is currently undergoing. This research helps identify opportunities to implement interventions to effectively improve air quality in the region. \nBiography: Ricardo Morales is an Associate Professor in the Department of Environmental Engineering at Universidad de los Andes\, in Bogotá\, Colombia. After graduating with a BS in Physics and in Chemical Engineering\, he completed his PhD in Atmospheric Sciences from Georgia Tech. Since then\, his research at Universidad de los Andes has used modeling and observational tools for atmospheric aerosols to better understand air quality in the northern portion of South America\, and the city of Bogotá in particular. He has authored over 20 peer-reviewed publications. He is currently visiting NCSU supported by a Fulbright Visiting Scholar grant.
URL:https://ccee.engr.it/event/ewc-seminar-by-ricardo-morales-universidad-de-los-andes-air-quality-challenges-in-northern-south-america-from-the-synoptic-to-the-micro-scale/
LOCATION:Fitts Woolard Hall 2331\, 915 Partners Way\, Raleigh\, NC\, United States
CATEGORIES:Appear On Homepage,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220902T125000
DTEND;TZID=America/New_York:20220902T134000
DTSTAMP:20260421T140132
CREATED:20220901T143110Z
LAST-MODIFIED:20220901T143339Z
UID:10000913-1662123000-1662126000@ccee.engr.it
SUMMARY:EWC Seminar by Francis de los Reyes (NCSU): An Engineer Talks About Poop
DESCRIPTION:Environmental\, Water Resources\, and Coastal Engineering Seminar Series \nFitts-Woolard Hall 2331 \nAn Engineer Talks About Poop (Alternatively\, Challenges and Opportunities in Global Sanitation) \nAbstract: Most people don’t think about or don’t want to think about what happens to human waste- fecal material. Where do we poop\, where does it go? This is a big\, global problem: 2020 WHO/UNICEF data show that 3.6 billion people- 46% of the global population- don’t use a toilet or latrine where the fecal material is safely treated and disposed. This is a wicked problem that touches on engineering\, public health\, social and cultural dimensions\, and has economic impacts in less developed countries. This presentation will discuss a systems view of the sanitation “value” chain- from the user interface\, the toilet or latrine\, to the collection and transport of fecal material\, to treatment and disposal. Key factors for addressing this global challenge will be discussed\, including how to re-think sanitation technologies. \nOne major project is developing a hygienic and dignified way of emptying pit latrines. Every day\, pit latrines receive an estimated 0.6 billion kg of faeces and 2.1 billion kg of urine from 1.77 billion people around the world. Once pits are full\, fecal sludge has to be removed\, before being transported and treated/reused. Manual emptying of pit latrines using buckets and shovels still exist today – a high-risk\, unsanitary\, and undignified job. One of the biggest challenges in this field is developing a single pit emptying technology that can empty trash-filled pits at a competitive cost. Our NC State University team has developed the innovative pit-emptying device\, the Flexcrevator. This device removes fecal sludge even in the presence of trash in pits. The Flexcrevator system has been developed over 6 years with extensive field testing in South Africa\, Zambia\, Malawi\, Kenya\, and India\, with funding from the Bill & Melinda\nGates Foundation\, and has recently been patented. Our overall goal is to demonstrate how the Flexcrevator can scale-up to meet global demand for hygienic and profitable pit emptying\, thereby improving sanitation practices and access world-wide. The presentation includes the design evolution of the trash exclusion head\, lab testing results with faecal sludge simulants and trash\, and field testing results from Zambia\, Kenya\, Madagascar\, and Rwanda. The challenges and lessons learned in designing this technology will be discussed. \nBiography: Francis de los Reyes is the Glenn E. and Phyllis J. Futrell Distinguished Professor #2 of Civil\, Construction\, and Environmental Engineering\, Alumni Distinguished Undergraduate Professor\, and University Faculty Scholar at North Carolina State University. He is also an Associate Faculty of Microbiology and Training Faculty of Biotechnology. He has also worked in water and sanitation issues in developing countries\, and has collaborations in the Philippines\, India\, China\, South Africa\, Pakistan\, Ghana\, and Malawi. Current and past research projects include: competition between filaments and floc-formers in activated sludge\, ecophysiology of nitrifiers and denitrifiers in microbial floc\, N removal from swine waste\, fate of bioagents in landfills\, microbial characterization of landfills\, molecular techniques for groundwater remediation sites\, foam control methods\, factors affecting fats\, oils\, and grease deposits in sewers\, wastewater treatment for rural areas\, water reuse systems\, novel molecular techniques for detecting denitrifiers\, energy from co-digestion\, and solutions for pit latrine emptying problems.
URL:https://ccee.engr.it/event/ewc-seminar-by-francis-de-los-reyes-ncsu-an-engineer-talks-about-poop/
LOCATION:Fitts Woolard Hall 2331\, 915 Partners Way\, Raleigh\, NC\, United States
CATEGORIES:Appear On Homepage,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220418T150000
DTEND;TZID=America/New_York:20220418T161500
DTSTAMP:20260421T140132
CREATED:20220207T151705Z
LAST-MODIFIED:20220207T151705Z
UID:10000879-1650294000-1650298500@ccee.engr.it
SUMMARY:Fifth Annual Three Minute Thesis (3MT) Competition
DESCRIPTION:Come watch our graduate students compete in CCEE’s 5th annual 3MT competition. Students must present their research in three minutes or less with only 1 static slide. The crowd gets to vote for Audience Choice winner! Our annual graduate student awards will also be presented at this time. Reception to follow on the second floor plaza.
URL:https://ccee.engr.it/event/fifth-annual-three-minute-thesis-3mt-competition/
LOCATION:Fitts Woolard Hall 2331\, 915 Partners Way\, Raleigh\, NC\, United States
CATEGORIES:Appear On Homepage
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