Improvements to the representation of BVOC chemistry–climate interactions in UKCA (v11.5) with the CRI-Strat 2 mechanism: incorporation and evaluation

Weber, James; Archer-Nicholls, Scott; Abraham, Nathan Luke; Shin, Youngsub M.; Bannan, Thomas J.; Percival, Carl J.; Bacak, Asan; Artaxo, Paulo; Jenkin, Michael; Khan, M. Anwar H.; Shallcross, Dudley E.; Schwantes, Rebecca H.; Williams, Jonathan; Archibald, Alex T.

doi:https://doi.org/10.5194/gmd-14-5239-2021

Articles | Volume 14, issue 8

https://doi.org/10.5194/gmd-14-5239-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-14-5239-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 8

Model evaluation paper

|

20 Aug 2021

Model evaluation paper |

| 20 Aug 2021

Improvements to the representation of BVOC chemistry–climate interactions in UKCA (v11.5) with the CRI-Strat 2 mechanism: incorporation and evaluation

James Weber, Scott Archer-Nicholls, Nathan Luke Abraham, Youngsub M. Shin, Thomas J. Bannan, Carl J. Percival, Asan Bacak, Paulo Artaxo, Michael Jenkin, M. Anwar H. Khan, Dudley E. Shallcross, Rebecca H. Schwantes, Jonathan Williams, and Alex T. Archibald

Supplement

https://doi.org/10.5194/gmd-14-5239-2021-supplement

Data sets

Z2F Brazil Observational used for CRI-STRAT 2 Evaluation James Weber and Thomas Bannan https://doi.org/10.17863/CAM.65133

Merged data file for SEAC4RS, Flight 01 (20130806), on the dc8 platform J. Chen https://www-air.larc.nasa.gov/cgi-bin/ArcView/seac4rs?MERGE=1#60_SECOND.DC8_MRG

Acetone canopy gradient concentration A. M. Yáñez-Serrano https://www.attodata.org/ddm/data/Showdata/72

Isoprene canopy gradient concentration A. M. Yáñez-Serrano https://www.attodata.org/ddm/data/Showdata/73

Isoprene oxidation products canopy gradient concentration A. M. Yáñez-Serrano https://www.attodata.org/ddm/data/Showdata/74

Monoterpenes canopy gradient concentration A. M. Yáñez-Serrano https://www.attodata.org/ddm/data/Showdata/77

OP3 Project: Airborne and Ground-based Meteorological Instruments Records as part of the Oxidant and Particle Photochemical Processes above a South-East Asian tropical rain forest Natural Environment Research Council, N. Hewitt, P. Edwards, C. Helfter, M. Irwin, A. Karunaharan, J. D. Lee, H. Newton, N. Robinson, and J. Ryder http://catalogue.ceda.ac.uk/uuid/9279c7e807a2ef0eb78a03c3821e62c4

Short summary

The new mechanism CRI-Strat 2 features state-of-the-art isoprene chemistry not previously available in UKCA and improves UKCA's ability to reproduce observed concentrations of isoprene, monoterpenes, and OH in tropical regions. The enhanced ability to model isoprene, the most widely emitted non-methane volatile organic compound (VOC), will allow understanding of how isoprene and other biogenic VOCs affect atmospheric composition and, through biosphere–atmosphere feedbacks, climate change.