• shareshare
  • link
  • cite
  • add
Other research product . 2018

Overview of experiment design and comparison of models participating in phase 1 of the SPARC Quasi-Biennial Oscillation initiative (QBOi)

Butchart, Neal; Anstey, James A.; Hamilton, Kevin; Osprey, Scott; McLandress, Charles; Bushell, Andrew C.; Kawatani, Yoshio; +26 Authors
Open Access
Published: 27 Sep 2018

The Stratosphere–troposphere Processes And their Role in Climate (SPARC) Quasi-Biennial Oscillation initiative (QBOi) aims to improve the fidelity of tropical stratospheric variability in general circulation and Earth system models by conducting coordinated numerical experiments and analysis. In the equatorial stratosphere, the QBO is the most conspicuous mode of variability. Five coordinated experiments have therefore been designed to (i) evaluate and compare the verisimilitude of modelled QBOs under present-day conditions, (ii) identify robustness (or alternatively the spread and uncertainty) in the simulated QBO response to commonly imposed changes in model climate forcings (e.g. a doubling of CO2 amounts), and (iii) examine model dependence of QBO predictability. This paper documents these experiments and the recommended output diagnostics. The rationale behind the experimental design and choice of diagnostics is presented. To facilitate scientific interpretation of the results in other planned QBOi studies, consistent descriptions of the models performing each experiment set are given, with those aspects particularly relevant for simulating the QBO tabulated for easy comparison.

111 references, page 1 of 12

Adachi, Y., Yukimoto, S., Deushi, M., Obata, A., Nakano, H., Tanaka, T. Y., Hosaka, M., Sakami, T., Yoshimura, H., Hirabara, M., Shindo, E., Tsujino, H., Mizuta, R., Yabu, S., Koshiro, T., Ose, T., and Kitoh, A.: Basic performance of a new earth system model of the Meteorological Research Institute (MRI-ESM1), Pap. Meteorol. Geophys., 64, 1-19, 2013.

Alexander, M. J. and Dunkerton, T. J.: A spectral parameterization of mean-flow forcing due to breaking gravity waves, J. Atmos. Sci., 56, 4167-4182, 0469(1999)056<4167:ASPOMF>2.0.CO;2, 1999.

Alexander, M. J. and Sato, K.: Gravity wave dynamics and climate: An update from the SPARC gravity wave activity, SPARC Newsletter, 44, 9-13, 2015.

Andrews, D. G., Holton, J. R., and Leovy, C. B.: Middle Atmospheric Dynamics, Academic Press, San Diego, California, 489 pp., 1987.

Anstey, J. A. and Shepherd, T. G.: High-latitude influence of the quasi-biennial oscillation, Q. J. Roy. Meteor. Soc., 140, 1-21,, 2014.

Anstey, J. A., Scinocca, J. F., and Keller, M.: Simulating the QBO in an atmospheric general circulation model: Sensitivity to resolved and parameterized forcing, J. Atmos. Sci., 73, 1649-1665,, 2016.

Anstey, J. A., Shepherd, T. G., and Scinocca, J. F.: Influence of the quasi-biennial oscillation on the extratropical winter stratosphere in an atmospheric general circulation model and in reanalysis data, J. Atmos. Sci., 67, 1402-1419,, 2010. [OpenAIRE]

Anstey, J., Hamilton, K., Osprey, S., Butchart, N., and Gray, L.: Report on the 1st QBO modelling and reanalyses workshop, 16- 18 March 2015, Victoria, BC, Canada, SPARC Newsletter, 45, 19-25, 2015.

Anstey, J., Osprey, S., Butchart, N., Hamilton, K., Gray, L., and Baldwin, M.: Report on the SPARC QBO Workshop: The QBO and its Global Influence - Past, Present and Future 26- 30 September 2016, Oxford, UK, SPARC Newsletter, 48, 33-41, 2017.

Baldwin, M. P., Gray, L. J., Dunkerton T. K., Hamilton, K., Haynes, P. H., Randel, W. J., Holton, J. R., Alexander, M. J., Hirota, I., Horinouchi, T., Jones, D. B. A., Kinnersley, J. S., Marquardt, C., Sato, K., and Takahashi, M.: The quasi-biennial oscillation, Rev. Geophys., 39, 179-229,, 2001. [OpenAIRE]

Funded by
Globally Observed Teleconnections and their role and representation in Hierarchies of Atmospheric Models
  • Funder: French National Research Agency (ANR) (ANR)
  • Project Code: ANR-15-JCLI-0004
Stratospheric and upper tropospheric processes for better climate predictions
  • Funder: European Commission (EC)
  • Project Code: 603557
  • Funding stream: FP7 | SP1 | ENV
UKRI| GOTHAM - Globally Observed Teleconnections in Hierarchies of Atmospheric Models
  • Funder: UK Research and Innovation (UKRI)
  • Project Code: NE/P006779/1
  • Funding stream: NERC