SPARC Science update: 25 February – 02 March

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


Uncertainty in the response of sudden stratospheric warmings and stratosphere‐troposphere coupling to quadrupled CO2 concentrations in CMIP6 models. By B. Ayarzagüena et al. in the Journal of Geophysical Research: Atmospheres.

Linking midlatitudes eddy heat flux trends and polar amplification. By R. Chemke and L.M. Polvani in in nature partner journals: Climate and Atmospheric Science.

A comprehensive assessment of tropical stratospheric upwelling in the specified dynamics Community Earth System Model 1.2.2 – Whole Atmosphere Community Climate Model (CESM (WACCM)). By N.A. Davis et al. in Geoscientific Model Development.

On the Role of Rossby Wave Breaking in the Quasi‐Biennial Modulation of the Stratospheric Polar Vortex during Boreal Winter. By H. Lu et al. in the Quarterly Journal of the Royal Meteorological  Society.

Simulation of convective moistening of the extratropical lower stratosphere using a numerical weather prediction model. By Z. Qu et al. in Atmospheric Chemistry and Physics.

Dependence of sudden stratospheric warmings on internal and external drivers. By A. Salminen et al. in the Geophysical Research Letters.

South Asian monsoon response to weakening of Atlantic meridional overturning circulation in a warming climate. By N. Sandeep et al. in Climate Dynamics.


Discussion papers – open for comments:

Trends of atmospheric water vapour in Switzerland from ground-based radiometry, FTIR and GNSS data. By L. Bernet et al. in Atmospheric Chemistry and Physics.

Gravitational separation of Ar/N2 and age of air in the lowermost stratosphere in airborne observations and a chemical transport model. By B. Birner et al. in Atmospheric Chemistry and Physics.

Lagrangian Gravity Wave spectra in the lower stratosphere of current (re)analyses. By A. Padglajen et al. in Atmospheric Chemistry and Physics.