Science Inventory

Whitehill, A., L. Valin, D. Williams, AND J. Szykman. Formaldehyde Measurements in Support of Synergistic TEMPO Air Quality Science (STAQS), Summer 2023. U.S. Environmental Protection Agency, Washington, DC, 2024.

Simon, H., C. Hogrefe, A. Whitehill, K. Foley, J. Liljegren, Norman Possiel, B. Wells, B. Henderson, L. Valin, G. Tonnesen, Keith Appel, AND S. Koplitz. Revisiting day-of-week ozone patterns in an era of evolving US air quality. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 24(3):1855-1871, (2024). https://doi.org/10.5194/acp-24-1855-2024

Simon, H., Keith Appel, K. Foley, B. Henderson, C. Hogrefe, S. Koplitz, Norman Possiel, G. Tonnesen, L. Valin, B. Wells, AND A. Whitehill. Comparison of 18 years of modeled and observed day-of-week ozone patterns. International Technical Meeting on Air Pollution Modeling and its Application, Chapel Hill, NC, May 22 - 26, 2023.

Tzortziou, M., C. Kwong, D. Goldberg, L. Schiferl, R. Commane, N. Abuhassan, J. Szykman, AND L. Valin. Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 22(4):2399-2417, (2022). https://doi.org/10.5194/acp-22-2399-2022

Pye, H., B. Place, Christine Allen, E. D'Ambro, Keith Wyat Appel, J. Bash, M. Coggon, S. Farrell, K. Foley, C. Hogrefe, W. Hutzell, F. McNeill, B. Murphy, I. Piletic, G. Pouliot, R. Schwantes, G. Sarwar, E. Saunders, K. Seltzer, H. Simon, W. Stockwell, L. Valin, F. Wisner, AND L. Xu. Designing chemical mechanisms for ozone and secondary organic aerosol endpoints (ACM 2022). Atmospheric Chemical Mechanisms, Davis, CA, December 07 - 09, 2022.

Long, R. AND L. Valin. Impacts of lake breeze meteorology on ozone gradient observations along Lake Michigan shorelines in Wisconsin. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 269:0, (2022). https://doi.org/10.1016/j.atmosenv.2021.118834

Szykman, Jim, L. Valin, E. Baumann, AND D. Williams. Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission and Level 2 Data Product Validation Plans. 2022 MARAMA Air Monitoring Committee Training Workshop, Swarthmore, PA, December 06 - 08, 2022.

Long, R. AND L. Valin. Characterization of ground-based atmospheric pollution and meteorology sampling stations during the Lake Michigan Ozone Study 2017. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, 71(7):866-889, (2021). https://doi.org/10.1080/10962247.2021.1900000

Spinei, E., M. Tiefengraber, M. Müller, M. Gebetsberger, A. Cede, Luke Valin, J. Szykman, A. Whitehill, A. Kotsakis, F. Santos, N. Abbuhasan, X. Zhao, V. Fioletov, S. Lee, AND R. Swap. Effect of Polyoxymethylene (POM-H Delrin) offgassing within Pandora head sensor on direct sun and multi-axis formaldehyde column measurements in 2016–2019. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, NA(NA):NA, (2021). https://doi.org/10.5194/amt-14-647-2021

Simon, H., Patrick Dolwick, A. Eyth, B. Henderson, S. Koplitz, Robert Owen, S. Phillips, Norman Possiel, V. Rao, B. Timin, J. Vukovich, C. Bailey, M. Beardsley, D. Choi, J. Han, H. Michaels, S. Roberts, D. Sonntag, J. Warila, M. Zawacki, Keith Appel, J. Bash, K. Foley, G. Pouliot, H. Pye, L. Valin, S. Ballare, C. Toro, AND S. Kimbrough. Overview of Progress and Findings from the Cross-EPA Coordination Effort for Understanding and Evaluating NOx Emissions Discrepancies. U.S. Environmental Protection Agency, Washington, DC, EPA-454/R-21-0084, 2021.

Qu, Z., D. Jacob, R. Silvern, V. Shah, P. Campbell, L. Valin, AND L. Murray. US COVID-19 Shutdown Demonstrates Importance of Background NO2 in Inferring NOx Emissions From Satellite NO2 Observations. GEOPHYSICAL RESEARCH LETTERS. American Geophysical Union, Washington, DC, 48(10):e2021GL092783, (2021). https://doi.org/10.1029/2021GL092783

Valin, L. Breathe Easily? Air Quality in the United States. Durham Public Schools Webinar - Meet the US EPA Science Expert, Durham, NC, April 21, 2020.

Judd, L., J. Al-Saadi, J. Szykman, L. Valin, A. Nehrir, S. Janz, M. Kowalewski, R. Swap, D. Williams, H. Eskes, J. Veefkind, A. Cede, M. Mueller, M. Gebetsberger, AND R. Pierce. Evaluating Sentinel-5P TROPOMI tropospheric NO2 column densities with airborne and Pandora spectrometers near New York City and Long Island Sound. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 13(11):6113-6140, (2020). https://doi.org/10.5194/amt-13-6113-2020

Jin, X., A. Fiore, K. Boersma, I. De Smedt, AND L. Valin. Inferring changes in summertime surface ozone-NOx-VOC chemistry over U.S. urban areas from two decades of satellite and ground-based observations. International Journal of Environmental Science and Technology. Springer, Heidelburg, Germany, 54(11):6518-6529, (2020). https://doi.org/10.1021/acs.est.9b07785

Cede, A., M. Tiefengraber, A. Dehn, B. Lefer, J. von Bismarck, S. Casadio, N. Abuhassan, N. Abuhassan, R. Swap, AND L. Valin. Operational satellite validation with data from the Pandonia Global Network (PGN). EGU General Assembly Meeting, Durham, North Carolina, May 04 - 08, 2020.

Caicadeo, V., J. Szykman, L. Valin, D. Williams, AND K. Cavender. Product 1.4.2: Research to Support Photochemical Assessment Monitoring Stations (PAMS) Program (40 CFR part 58): Development and Implementation of a Common Mixing Height Algorithm and Prototype National Data Archive - project status update to OAQPS and State Modelers. EPA-State model evaluation forum: monthly meeting, NA, North Carolina, February 26, 2020.

Whitehill, A., L. Valin, D. Williams, J. Szykman, R. Long, S. Kaushik, P. Furdyna, AND D. Felton. Evaluation of continuous formaldehyde measurements in air. NYSERDA Air Quality & Health Effects Workshop, Albany, NY, April 09 - 10, 2019.

Whitehill, A., D. Williams, L. Valin, J. Szykman, AND R. Long. Formaldehyde and Formic Acid Measurements at Westport, CT. LISTOS Science Team Meeting, Albany, NY, April 11, 2019.

Simon, H., K. Baker, L. Valin, J. Crawford, S. Puesede, J. Kelly, K. Foley, R. Cohen, B. Timin, A. Weinheimer, N. Possiel, C. Owen, C. Misenis, G. Diskin, A. Fried, AND B. Henderson. Characterizing CO and NOy Sources and Relative Ambient Ratios in the Baltimore Area Using Ambient Measurements and Source Attribution Modeling. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 123(6):3304-3320, (2018).

Kelly, J., C. Parworth, Q. Zhang, D. Miller, K. Sun, M. Zondlo, K. Baker, A. Wisthaler, J. Nowak, S. Pusede, R. Cohen, A. Weinheimer, A. Beyersdorf, G. Tonnesen, J. Bash, L. Valin, J. Crawford, A. Fried, AND J. Walega. Modeling NH4NO3 Over the San Joaquin Valley During the 2013 DISCOVER‐AQ Campaign. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 123(9):4727-4745, (2018). https://doi.org/10.1029/2018JD028290

Judd, L., J. Al-Saadi, L. Valin, R. Pierce, K. Yang, S. Janz, M. Kowalewski, Jim Szykman, M. Tiefengraber, AND M. Mueller. The Dawn of Geostationary Air Quality Monitoring: Case Studies From Seoul and Los Angeles. Frontiers in Environmental Science. Frontiers, Lausanne, Switzerland, 6:85, (2018). https://doi.org/10.3389/fenvs.2018.00085

Spinei, E., A. Whitehill, A. Fried, M. Tiefengraber, T. Knepp, S. Herndon, J. Herman, M. Muller, N. Abuhassan, A. Cede, D. Richter, J. Walega, J. Crawford, Jim Szykman, L. Valin, D. Williams, R. Long, R. Swap, Y. Lee, N. Nowak, AND B. Poche. The first evaluation of formaldehyde column observations by improved Pandora spectrometers during the KORUS-AQ field study. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 11(9):4943-4961, (2018). https://doi.org/10.5194/amt-11-4943-2018

Jin, X., A. Fiore, L. Murray, L. Valin, L. Lamsal, B. Duncan, K. Boersma, I. De Smedt, G. Gonzalez Abad, K. Chance, AND G. Tonnesen. Evaluating a Space-Based Indicator of Surface Ozone-NOx-VOC Sensitivity Over Midlatitude Source Regions and Application to Decadal Trends. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 122(19):10439-10461, (2017).