edu.ucar.opensky::articles:26982 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:54:09.041999 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7pc36hg Airborne observations constrain heterogeneous nitrogen and halogen chemistry on tropospheric and stratospheric biomass burning aerosol 2024-02-28T00:00:00Z publication https://n2t.org/ark:/85065/d7pc36hg https://doi.org/10.1029/2023GL107273 Decker, Z. C. J. author Novak, G. A. author Aikin, K. author Veres, Patrick author Neuman, J. A. author Bourgeois, I. author Bui, T. P. author Campuzano-Jost, P. author Coggon, M. M. author Day, D. A. author DiGangi, J. P. author Diskin, G. S. author Dollner, M. author Franchin, Alessandro author Fredrickson, C. D. author Froyd, K. D. author Gkatzelis, G. I. author Guo, H. author Hall, S. R. author Halliday, H. author Hayden, K. author Holmes, C. D. author Jimenez, J. L. author Kupc, A. author Lindaas, J. author Middlebrook, A. M. author Moore, R. H. author Nault, B. A. author Nowak, J. B. author Pagonis, D. author Palm, B. B. author Peischl, J. author Piel, F. M. author Rickly, P. S. author Robinson, M. A. author Rollins, A. W. author Ryerson, T. B. author Schill, G. P. author Sekimoto, K. author Thompson, C. R. author Thornhill, K. L. author Thornton, J. A. author Ullmann, Kirk author Warneke, C. author Washenfelder, R. A. author Weinzierl, B. author Wiggins, E. B. author Williamson, C. J. author Winstead, E. L. author Wisthaler, A. author Womack, C. C. author Brown, S. S. author UCAR/NCAR - Library publisher Heterogeneous chemical cycles of pyrogenic nitrogen and halides influence tropospheric ozone and affect the stratosphere during extreme Pyrocumulonimbus (PyroCB) events. We report field-derived N2O5 uptake coefficients, gamma(N2O5), and ClNO2 yields, phi(ClNO2), from two aircraft campaigns observing fresh smoke in the lower and mid troposphere and processed/aged smoke in the upper troposphere and lower stratosphere (UTLS). Derived phi(ClNO2) varied across the full 0-1 range but was typically <0.5 and smallest in a PyroCB (<0.05). Derived gamma(N2O5) was low in agricultural smoke (0.2-3.6 x 10(-3)), extremely low in mid-tropospheric wildfire smoke (0.1 x 10(-3)), but larger in PyroCB processed smoke (0.7-5.0 x 10(-3)). Aged biomass burning aerosol in the UTLS had a higher gamma(N2O5) of 17 x 10(-3) that increased with sulfate and liquid water, but that was 1-2 orders of magnitude lower than values for aqueous sulfuric aerosol used in stratospheric models. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation