The Elliott Lab
Our research program examines the tight coupling between human activities and reactive nitrogen distributions in atmosphere, terrestrial and aquatic systems at multiple spatial scales using stable isotope geochemistry. For more information, see "Research".
Regional Stable Isotope Laboratory for Earth and Environmental Science Research
University of Pittsburgh Mobile Air Quality Research Laboratory
The ENERGY-NET weekly blog- check it out!
The 2015 International Acid Rain Conference
9/30/14: Former PhD student, Dave Felix, continues to publish his dissertation research:
Felix JD, Elliott EM, Gish T, Magrihang R, Clougherty J, Cambal, L. 2014. Examining the transport of ammonia emissions across landscapes using nitrogen isotope ratios. Atmospheric Environment. 95:563-570.
Felix, JD and Elliott, EM. 2014. The isotopic composition of passively collected nitrogen dioxide emissions: Vehicle, soil and livestock source signatures. Atmospheric Environment. 92:359-366.
9/16/14: New paper published on nutrient contamination sources to Nine Mile Run:
Divers MT, Elliott, EM, Bain, DJ. 2014. Quantification of Nitrate Sources to an Urban Stream Using Dual Nitrate Isotopes. Environmental Science & Technology. 48(18): 10,580-10,587.
9/1/14: Dr. Elliott awarded promotion with tenure.
7/16/14: Lucy Rose successfully defends her dissertation!
5/15/14: Lucy Rose wins Best Student Presentation Award at the American Meteorological Society, Second Conference on Atmospheric Biogeosciences in Portland, OR.
5/1/14: Welcome new M.S. student, Justin Coughlin and new undergraduate researchers, Troy Ferland and Katherine Colwell.
5/1/14: New project starts examining fate of reactive N emissions from unconventional shale gas extraction activities.
1/25/14: Elliott lab seeking new members!! See Opportunities for description of a new Postdoctoral and M.S. opportunity in our lab.
1/9/14: Elliott receives new DOE award for examining reactive nitrogen emissions of Marcellus Shale extraction activities.
12/9/13: Lucy Rose presents latest findings at AGU. Her presentation titled "Temporal Trends in Stream Nitrate Sources Across a Nitrogen Saturation Gradient" reported triple nitrate isotope analyses for four watersheds at Fernow Experimental Forest.
12/07/13: EnergyNET exhibit opens at the Carnegie Museum of Natural History. The grand opening of our newest exhibit "Pollution Solutions" is dedicated to finding sustainable solutions to urban water quality issues and was well-attended by parents, friends, and Museum visitors.
10/13: An invited review paper was pubished for a special volume of Elements Magazine dedicated to "Nitrogen and its (biogeocosmo)chemical cycling". The paper is titled "Stable isotopes as tracers of anthropogenic nitrogen sources, deposition, and impacts" and authored by Meredith Hastings, Karen Casciotti, and Emily Elliott.
9/2/13: Manuscript published describing a new methodological approach for isotopic analysis of low concentration ambient ammonia samples. The paper, "Characterizing the isotopic composition of atmospheric ammonia emission sources using passive samplers and a combined oxidation-bacterial denitrifier approach" was published in Rapid Communications in Mass Spectrometry and was led by J. David Felix.
9/1/13: EnergyNet transitions to a new Geoscience Fellow and Environmental Interns. Krissy Hopkins (an avid blogger) and PhD Candidate working with Dr. Dan Bain joined the EnergyNet team in September along with four new Environmental Interns (Nadin Suler,
Lindsay Hagerty, Lauren Bakale, and Rebekah Dempsey).
8/31/13: EnergyNET exhibit opens at the Carnegie Museum of Natural History. The grand opening of our new exhibit "The Energy-Water Nexus: Watt About It?" was well-attended by parents, friends, and Museum visitors.
8/1/13: Welcome new PhD students: In August, we welcomed the addition of two new PhD students to our lab group. Zhongjie Yu joins us from Rutgers University where he recently completed a M.S. thesis exploring methane ebullition from U.S. peatlands. Kassia Groszewski joins us from Indiana University, Bloomington, where she recently finished her M.S. in Hydrology. Welcome!
6/26/13: Our urban nitrogen research in Nine Mile Run is highlighted in the Academic Minute podcast sponsored by WAMC Northeast Public Radio. The podcast can be accessed here.
5/24/13: New paper published on the influence highways on reactive nitrogen distributions. The article titled "Highway contributions to reactive nitrogen deposition: Tracing the fate of vehicular NOx using stable isotopes and plant biomonitors" was published in Biogeochemistry and led by Katie Redling.
4/25/13: New results published on the historical influence of fertilizer application to Greenland nitrate deposition. The article titled "The agricultural history of human-nitrogen interactions as recorded in ice core d15N-NO3" was published in Geophysical Research Letters and led by former lab member, J. David Felix.
4/20/13: Dr. Elliott was invited to present at the 75th anniversary of Sanitation Engineering at Johns Hopkins University.
4/10/13: Undergraduate researcher, Mollie Kish, awarded a Brackenridge Summer Research Fellowship. The Fellowship will support Mollie's research documenting rates of urban bulk nitrogen deposition in Nine Mile Run.
3/18/13: Research results from Nine Mile Run in Pittsburgh, PA are featured in the online journal, Atlantic Cities. The article, "It's Not Just Overflow—Everyday Leaks From Sewer Systems Lead to Alarming Amounts of Sewage in Our Waterways" can be accessed here.
3/9/13: Dr. Elliott and Lucy Rose return from the 4th U.S.-Japan Joint Seminar on Responses of Catchment Hydrology and Forest Biogeochemistry to Climatic and Environmental Change in Honolulu, Hawaii. Dr. Elliott, a co-convener of the NSF-funded conference, attended the meeting with Lucy Rose who presented a poster on her recent results "Biogenic and anthropogenic NOx contributions to precipitation nitrate".
2/13/13: Dr. Elliott receives an NSF CAREER award for her proposal "Air-ecosystem-water interactions of reactive nitrogen in urban systems" from the Hydrologic Sciences directorate.
1/29/13: Marion Divers publishes a paper published in Environmental Science & Technology entitled "Constraining nitrogen inputs to urban streams from leaking sewer infrastructure using inverse modeling: Implications for DIN retention in urban environments".
1/09/13: Dr. Elliott awarded Honorable Mention for the 2013 Carnegie Science Awards in the Environmental category.