SPARC Science Update 25-31 March

A selection of new science articles from the past week of interest to the SPARC community (a SPARC Office choice).

Observed versus simulated mountain waves over Scandinavia – improvement of vertical winds, energy and momentum fluxes by enhanced model resolution? By J. Wagener et al. in Atmospheric Chemistry and Physics.

Forecasting northern polar stratospheric variability with competing statistical learning models. By I. Minokhin et al. in the Quarterly Journal of the Royal Meteorological Society.

Quantification of the SF6 Lifetime Based on Mesospheric Loss Measured in the Stratospheric Polar Vortex. By E.A. Ray et al. in the Journal of Geophysical Research: Atmospheres.

The Role of Sulfur Dioxide in Stratospheric Aerosol Formation Evaluated Using In-Situ Measurements in the Tropical Lower Stratosphere. By A.W. Rollins et al. in Geophysical Research Letters.

Weakening and shift of the Arctic stratospheric polar vortex: Internal variability or forced response? By W.J.M. Seviour in Geophysical Research Letters.

QBO/Solar Modulation of the Boreal Winter Madden-Julian Oscillation: A Prediction for the Coming Solar Minimum. By L.L. Hood in Geophysical Research Letters.

Wave modulation of the extratropical tropopause inversion layer. By R.P. Kedzierski et al. in Atmospheric Chemistry and Physics.

Defining Sudden Stratospheric Warming in Climate Models: Accounting for Biases in Model Climatologies. By J. Kim et al. in the Journal of Climate.

Ice water content–extinction relationships and effective diameter for TTL cirrus derived from in situ measurements during ATTREX 2014. By T. Thornberry et al. in the Journal of Geophysical Research: Atmospheres.

Summertime upper tropospheric nitrous oxide over the Mediterranean as a footprint of Asian emissions. By Y. Kangah et al. in the Journal of Geophysical Research: Atmospheres.

Role of vertical and horizontal mixing in the tape recorder signal near the tropical tropopause. By A.A. Glandville and T. Birner in Atmospheric Chemistry and Physics.

Linkages of subtropical stratospheric intraseasonal intrusions with Indian summer monsoon deficit rainfall. By S. Fadnavis and R. Chattopadhyay in the Journal of Climate.

Discussion papers – open for comment

Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates. By J. Xing et al. in Atmospheric Chemistry and Physics Discussions.

Comparison of ozone profiles and influences from the tertiary ozone maximum in the night-to-day ratio above Switzerland. By L. Moreira et al. in Atmospheric Chemistry and Physics Discussions.

Sub-seasonal Variability in the Boundary Layer Sources for Transport into the Tropopause Layer in the Asian Monsoon Region. By B. Chen et al. in Atmospheric Chemistry and Physics Discussions.