Send this page to someone
Fill in the email address of your friend, and we will send an email that contains a link to this page.
Work begins to establish a baseline carbon budget for U.S. coastlines
Thompson Creek, Maryland. Image: Photo by Jonathan Kellogg, Integration and Application Network; University of Maryland Center for Environmental Science. By Amanda Jacobson Snyder,May 4, 2015
Student meteorologist tackles challenge of predicting Philadelphia’s ozone pollution
Lexie Herdt presented her research at the 2015 AMS conference, where she received a second place prize for undergraduate student research poster. (Image courtesy of Herdt)
It's a complex interplay of emissions and meteorology that's difficult to get right. But one Penn State undergrad has stepped up to help make Philadelphia's forecasts more accurate.
Ozone forms when other pollutants — expelled from cars or power plants, for example — react in sunlight. It's hazardous to breathe in, so forecasters try to figure out when levels will be high so they can issue an orange or red code, and warn people to stay inside.
"Since about the early 2000s, nitrogen oxides and other pollutants have been steadily decreasing in our part of the country," said Amy Huff, an air quality meteorologist at Penn State University.
That's good news, of course. But it's also meant that the statistical models developed to predict ozone no longer work. The team completely abandoned them in 2011 because they failed so miserably.