A University of Houston team looked into what areas in Houston had the highest impact on emissions and how certain meteorological factors play into ozone formation. Photo via UH.edu

A team of researchers at the University of Houston are using machine learning to help guide pollution fighting strategies.

As reported in the journal Environmental Pollution last month, the team used the SHAP algorithm of machine learning (a game theory approach) and the Positive Matrix Factorization to pinpoint what areas in Houston had the highest impact on emissions and how certain meteorological factors play into ozone formation.

The paper was authored by Delaney Nelson, a doctoral student at the Department of Earth and Atmospheric Sciences of UH, and Yunsoo Choi, corresponding author and professor of atmospheric chemistry, AI deep learning, air quality modeling and satellite remote sensing.

The team's research closely tracked nitrogen-based compound and volatile organic compound measurements from Texas Commission on Environmental Quality's monitoring stations in the Houston area. After importing measurements from The Lynchburg Ferry station in Houston's ship channel and the urban Milby Park station, the machine learning and SHAP analysis showed a chemically definitive difference between the two areas.

For example, at the industrial station, the most impactful sources of pollution were from oil and gas flaring/production. At the urban site n_decane and industrial emissions/evaporation had the most impact on ozone.

According to Nelson and Choi, this shows that the machine learning and SHAP analysis approach can be used to tailor more precise air quality management strategies in different areas based on the site's unique characteristics.

“Once we know the specific emission sources and factors, we can develop targeted strategies to reduce emissions, which will in turn reduce ozone in the air and make it healthier for everyone," Choi said in a statement.

“Pollution is a critical issue in Houston, where you have extreme high heat and high concentration of ozone in the summers. The types of insights we got are very useful information for the local community to develop effective policies. That’s why we put our time, effort and technological expertise into this project," he continued.

Next the team envisions applying their approach in different cities and across the country.

“Austin, San Antonio and Dallas all have different characteristics, so I expect (volatile organic compound) sources will also be different,” Choi said. “Identifying VOC sources in different cities is very important because each city should have its own unique pollution fighting strategy.”

This summer, the City of Houston released an updated report on its major strategies to combat climate change and build a more resilient future for its residents.

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New report maps Houston workforce development strategies as companies transition to cleaner energy

to-do list

The University of Houston’s Energy University latest study with UH’s Division of Energy and Innovation with stakeholders from the energy industry, academia have released findings from a collaborative white paper, titled "Workforce Development for the Future of Energy.”

UH Energy’s workforce analysis found that the greatest workforce gains occur with an “all-of-the-above” strategy to address the global shift towards low-carbon energy solutions. This would balance electrification and increased attention to renewables with liquid fuels, biomass, hydrogen, carbon capture, utilization and storage commonly known as CCUS, and carbon dioxide removal, according to a news release.

The authors of the paper believe this would support economic and employment growth, which would leverage workers from traditional energy sectors that may lose jobs during the transition.

The emerging hydrogen ecosystem is expected to create about 180,000 new jobs in the greater Houston area, which will offer an average annual income of approximately $75,000. Currently, 40 percent of Houston’s employment is tied to the energy sector.

“To sustain the Houston region’s growth, it’s important that we broaden workforce participation and opportunities,” Ramanan Krishnamoorti, vice president of energy and innovation at UH, says in a news release. “Ensuring workforce readiness for new energy jobs and making sure we include disadvantaged communities is crucial.”

Some of the key takeaways include strategies that include partnering for success, hands-on training programs, flexible education pathways, comprehensive support services, and early and ongoing outreach initiatives.

“The greater Houston area’s journey towards a low-carbon future is both a challenge and an opportunity,” Krishnamoorti continues. “The region’s ability to adapt and lead in this new era will depend on its commitment to collaboration, innovation, and inclusivity. By preparing its workforce, engaging its communities, and leveraging its industrial heritage, we can redefine our region and continue to thrive as a global energy leader.”

The study was backed by federal funding from the Department of the Treasury through the State of Texas under the Resources and Ecosystems Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012.

Houston geothermal startup selects Texas location for first energy storage facility

major milestone

Houston-based geothermal energy startup Sage Geosystems has teamed up with a utility provider for an energy storage facility in the San Antonio metro area.

The three-megawatt EarthStore facility will be on land controlled by the San Miguel Electric Cooperative, which produces electricity for customers in 47 South Texas counties. The facility will be located in the town of Christine, near the cooperative’s coal-fired power plant.

Sage says its energy storage system will be paired with solar energy to supply power for the grid operated by the Electric Reliability Council of Texas (ERCOT). The facility is set to open later this year.

“Once operational, our EarthStore facility in Christine will be the first geothermal energy storage system to store potential energy deep in the earth and supply electrons to a power grid,” Cindy Taff, CEO of Sage Geosystems, says in a news release.

The facility is being designed to store geothermal energy during six- to 10-hour periods.

“Long-duration energy storage is crucial for the ERCOT utility grid, especially with the increasing integration of intermittent wind and solar power generation,” says Craig Courter, CEO of the San Miguel Electric Cooperative.