Intraseasonal to interannual variability of Kelvin wave momentum fluxes as derived from high-resolution radiosonde data

Sjoberg, Jeremiah P.; Birner, Thomas; Johnson, Richard H.

doi:https://doi.org/10.5194/acp-17-8971-2017

Articles | Volume 17, issue 14

https://doi.org/10.5194/acp-17-8971-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-8971-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 14

Research article

|

26 Jul 2017

Research article |

| 26 Jul 2017

Intraseasonal to interannual variability of Kelvin wave momentum fluxes as derived from high-resolution radiosonde data

Jeremiah P. Sjoberg, Thomas Birner, and Richard H. Johnson

Supplement

https://doi.org/10.5194/acp-17-8971-2017-supplement

Data sets

MJO (Madden Julian Oscillation) Earth System Research Laboratory https://www.esrl.noaa.gov/psd/mjo/mjoindex/

Dynamics of the Madden-Julian Oscillation Earth Observing Laboratory http://www.eol.ucar.edu/projects/dynamo/

RA-Interim Project. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory European Centre for Medium-Range Weather Forecasts https://doi.org/10.5065/D6CR5RD9

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Short summary

Observational estimates of tropical, large-scale fluxes of zonal momentum from troposphere to stratosphere remain challenging. We present an extended technique for estimating the daily amplitudes of these fluxes using data captured from balloon-borne radiosondes. Climatological analysis of our time series matches expectations of annual and interannual variability, indicating reliability in our estimates. Vertical resolution less than 1 km is found to be important for precise estimation.