SPARC Science Update: 19 March – 1 April

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

Stratospheric aerosol – Observations, processes, and impact on climate. By S. Kremser et al. in Reviews of Geophysics.

Global stratospheric measurements of the isotopologues of methane from the Atmospheric Chemistry Experiment Fourier transform spectrometer. By E.M. Buzan et al. in Atmospheric Measurement Techniques.

Intercomparison of in situ water vapor balloon-borne measurements from Pico-SDLA H2O and FLASH-B in the tropical UTLS. By M. Ghysels et al. in Atmospheric Measurement Techniques.

The stratospheric pathway for Arctic impacts on mid-latitude climate. By T. Nakamura et al. in Geophysical Research Letters.

Lagrangian temperature and vertical velocity fluctuations due to gravity waves in the lower stratosphere. By A. Podglajen et al. in Geophysical Research Letters.

Progress towards high-resolution, real-time radiosonde reports. By B. Ingleby et al. in the Bulletin of the American Meteorological Society.

The Influence of the Madden-Julian Oscillation on Northern Hemisphere Winter Blocking. By S.A. Henderson et al. in the Bulletin of the American Meteorological Society.

Maryland Summer Stratospheric Intrusions. By L.E. Ott et al. in the Journal of Geophysical Research: Atmospheres.

Detection of trends in surface ozone in the presence of climate variability. By E.A. Barnes et al. in the Journal of Geophysical Research: Atmospheres.

Predictability of the Stratospheric Polar Vortex Breakdown: An Ensemble Reforecast Experiment for the Splitting Event in January 2009. By S. Noguchi et al. in the Journal of Geophysical Research: Atmospheres.

Quantifying Isentropic Stratosphere-Troposphere Exchange (STE) of Ozone. By H. Yang et al. in the Journal of Geophysical Research: Atmospheres.

Energetic particle precipitation: a major driver of the ozone budget in the Antarctic upper stratosphere. By A. Damiani et al. in Geophysical Research Letters.


Upper tropospheric humidity changes under constant relative humidity. By K. Gierens and K. Eleftheratos in Atmospheric Chemistry and Physics.

On the Composite Response of the MLT to Major Sudden Stratospheric Warming Events with Elevated Stratopause. By V. Limpasuvan et al. in the Journal of Geophysical Research: Atmospheres.

Highly significant responses to anthropogenic forcings of the midlatitude jet in the Southern Hemisphere. By A. Solomon and L.M. Polvani in the Journal of Climate.

Stratospheric ozone changes under solar geoengineering: implications for UV exposure and air quality. By P.J. Nowack et al. in Atmospheric Chemistry and Physics.


Discussion papers – open for comment

Spectroscopic evidence for large aspherical β-NAT particles involved in denitrification in the December 2011 Arctic stratosphere. By W. Woiwode et al. in Atmospheric Chemistry and Physics Discussions.

Strong modification of stratospheric ozone forcing by cloud and sea ice adjustments. By Y. Xia et al. in Atmospheric Chemistry and Physics Discussions.

A semi-empirical model for mesospheric and stratospheric NOy produced by energetic particle precipitation. By B. Funke et al. in Atmospheric Chemistry and Physics Discussions.