Personal profile
Education/Academic qualification
Chemistry, PhD, University of Colorado Boulder
Chemistry, BS, Willamette University
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Collaborations and top research areas from the last five years
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Incorporating Gas-Phase Chemistry Into the Unified Forecast System (UFS) for Global Air Quality Applications
He, J., Zhang, L., Schwantes, R. H., Baker, B., Horowitz, L., Naik, V., Lyu, C., Moon, Z., Grell, G., Ahmadov, R., Schnell, J., Yang, K., Wei, Z., Wang, S., Chang, K. L., Gorchov Negron, A. M., Zhu, A., Kondragunta, S., Apel, E. C. & Bourgeois, I. & 10 others, , Mar 2026, In: Journal of Advances in Modeling Earth Systems. 18, 3, e2025MS005299.Research output: Contribution to journal › Article › peer-review
Open Access -
Insights on ozone formation sensitivity in Southeast and East Asian megacities during ASIA-AQ
Cho, C., Franchin, A., Flocke, F., Lesko, K., Owen, C., Hall, S. R., Ullmann, K., Apel, E. C., Hills, A. J., Hornbrook, R. S., Roozitalab, B., Jeong, D., Diskin, G. S., Choi, Y., DiGangi, J. P., Miech, J., Wolfe, G. M., Hanisco, T. F., St. Clair, J. M. & Liao, J. & 21 others, , May 6 2026, In: Atmospheric Chemistry and Physics. 26, 9, p. 6097-6116 20 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Organic acids and cloud droplet acidity in recent years at Whiteface Mountain, NY, with a focus on wildfire smoke influence
Tripathy, A., Khwaja, H. A., Hussain, M. M., Yerger, E., Kelting, D., Lawrence, C. E., Casson, P., Snyder, P., Lombardo, S., Pittman, N., DeMarle, K., Patel, R., Hammond, L., Apel, E. C., Hornbrook, R. S., Hills, A. J., Brandt, R., McKim, S., Schlemmer, J. & Lance, S., Mar 20 2026, In: Atmospheric Chemistry and Physics. 26, 6, p. 3951-3972 22 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
Trace Organic Gas Analyzer Time-of-Flight mass spectrometer (TOGA-TOF) system for airborne observations of formaldehyde
Jeong, D., Hornbrook, R. S., Hills, A. J., Diskin, G., Halliday, H. S., DiGangi, J. P., Fried, A., Richter, D., Walega, J., Weibring, P., Hanisco, T. F., Wolfe, G. M., St. Clair, J., Peischl, J., Wisthaler, A., Mikoviny, T., Nowak, J. B., Piel, F., Tomsche, L. & Holmes, C. D. & 7 others, , May 5 2026, In: Atmospheric Measurement Techniques. 19, 9, p. 2985-3000 16 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Analysis of Volatile Organic Compound Product Distributions under Reduced NOxConditions in the NSF NCAR Atmospheric Simulation Chamber: Implications for In Situ VOC Measurements
Asher, E., Hornbrook, R. S., Roozitalab, B., Zhang, X., Ortega, J., Tyndall, G. S., Hills, A. J., Orlando, J. J. & Apel, E. C., Jul 17 2025, In: ACS Earth and Space Chemistry. 9, 7, p. 1737-1751 15 p.Research output: Contribution to journal › Article › peer-review
Datasets
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Trace Organic Gas Analyzer-Time-of-Flight Mass Spectrometer (TOGA-TOF) Data
Apel, E. (Creator), Hornbrook, R. (Creator), Hills, A. (Creator) & Barletta, B. (Contributor), NSF NCAR Earth Observing Lab, Apr 11 2023
Dataset
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TOGA VOC data measured with TOGA-TOF (Trace Organic Gas Analyzer with Time-of-Flight Mass Spectrometer)
Apel, E. (Creator), Hornbrook, R. (Creator) & Hills, A. (Creator), NSF NCAR Earth Observing Lab, Apr 11 2023
Dataset
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Trace Organic Gas Analyzer (TOGA) Data
Apel, E. (Creator), Hornbrook, R. (Creator) & Hills, A. (Creator), NSF NCAR Earth Observing Lab, May 27 2020
Dataset