Evaluation of ambient ammonia measurements from a research aircraft using a closed-path QC-TILDAS operated with active continuous passivation

Pollack, Ilana B.; Lindaas, Jakob; Roscioli, J. Robert; Agnese, Michael; Permar, Wade; Hu, Lu; Fischer, Emily V.

doi:https://doi.org/10.5194/amt-12-3717-2019

Articles | Volume 12, issue 7

https://doi.org/10.5194/amt-12-3717-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-12-3717-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 7

Research article

|

10 Jul 2019

Research article |

| 10 Jul 2019

Evaluation of ambient ammonia measurements from a research aircraft using a closed-path QC-TILDAS operated with active continuous passivation

Ilana B. Pollack, Jakob Lindaas, J. Robert Roscioli, Michael Agnese, Wade Permar, Lu Hu, and Emily V. Fischer

Data sets

CSU Gas Phase Ammonia (NH3) Measurements E. Fischer https://doi.org/10.26023/2WAS-8Z23-QD0Z

Aerodyne CS-108 miniQCL CO, N2O and H2O in situ mixing ratio observations - ICARTT format T. L. Campos https://doi.org/10.26023/Q888-WZRD-B70F

PTR-ToF-MS Measurements of NMVOCs, HONO, HCN, CH3CN Data L. Hu https://doi.org/10.26023/K9F4-2CNH-EQ0W

Low Rate (LRT - 1 sps) Navigation, State Parameter, and Microphysics Flight-Level Data - ICARTT format UCAR/NCAR Earth Observing Laboratory https://doi.org/10.26023/G766-BS71-9V03

Short summary

A closed-path infrared absorption spectrometer was outfitted with the option for active continuous passivation for measuring large, rapid gradients in atmospheric NH₃ from a research aircraft. In-flight and ground observations show utility in passivant addition for recovering instrument time response when sampling surfaces are contaminated and cannot be cleaned in a timely manner and for maintaining rapid time response in an NH₃-rich and humid environment over a several-week-long field campaign.