SPARC Science Update: 24-30 September

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

Heterogeneous kinetics of H2O, HNO3 and HCl on HNO3 hydrates (α-NAT, β-NAT, NAD) in the range 175–200 K. By R. Iannarelli and M.J. Rossi in Atmospheric Chemistry and Physics.

Contrasting Upper and Lower Atmospheric Metrics of Tropical Expansion in the Southern Hemisphere. By A. Solomon et al. in the Journal of Geophysical Research: Atmospheres.

The Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database: a long-term database for climate studies. By S.M. Davis et al. Earth System Science Data.

Future Arctic ozone recovery: the importance of chemistry and dynamics. By E.M. Bednarz et al. in Atmospheric Chemistry and Physics.

Influence of topography on temperature variations in the tropical tropopause layer. By H. Kubokawa et al in the Journal of Geophysical Research: Atmospheres.

Evidence of horizontal and vertical transport of water in the Southern Hemisphere tropical tropopause layer (TTL) from high-resolution balloon observations. By S.M. Khaykin et al. in Atmospheric Chemistry and Physics.

A mechanism to explain the variations of tropopause and tropopause inversion layer in the Arctic region during a sudden stratospheric warming in 2009. By R. Wang et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

Variability and evolution of mid-latitude stratospheric aerosol budget from 22 years of ground-based lidar and satellite observations. By S.M. Khaykin et al. in Atmospheric Chemistry and Physics Discussions.

AirCore-HR: A high resolution column sampling to enhance the vertical description of CH4 and CO2. By O. Membrive et al. in Atmospheric Measurement Techniques Discussions.

A Sudden Stratospheric Warming Compendium. By A.H. Butler et al. in Earth System Science Data Discussions.

SPARC Science Update: 17-23 September

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

The tropical tropopause inversion layer: variability and modulation by equatorial waves. By R.P. Kedzierski et al in Atmospheric Chemistry and Physics.

Phosgene in the UTLS: seasonal and latitudinal variations from MIPAS observations. By M. Valeri et al. in Atmospheric Measurement Techniques.

A laser-induced fluorescence instrument for aircraft measurements of sulfur dioxide in the upper troposphere and lower stratosphere. By A.W. Rollins et al. in Atmospheric Measurement Techniques.

The Mid-latitude Lower-Stratospheric Mountain Wave “Valve Layer”. By C.G. Kruse et al. in the Journal of the Atmospheric Sciences.

Aerosol Effects on Summer Monsoon over Asia during 1980s and 1990s. By I.-C. Tsai et al. in the Journal of Geophysical Research: Atmospheres.

AerGOM, an improved algorithm for stratospheric aerosol extinction retrieval from GOMOS observations – Part 1: Algorithm description. By F. Vanhellemont et al. in Atmospheric Measurement Techniques.

AerGOM, an improved algorithm for stratospheric aerosol extinction retrieval from GOMOS observations – Part 2: Intercomparisons. By C.E. Robert et al. in Atmospheric Measurement Techniques.

Detection of deep stratospheric intrusions by cosmogenic 35S. By M. Lin et al. in Proceedings of the National Academy of Sciences of the United States of America.

Do strong warm ENSO events control the phase of the stratospheric QBO? By B. Christiansen et al. in Geophysical Research Letters.

Changes in meandering of the Northern Hemisphere circulation. By G. Di Capua and D. Coumou in Environmental Research Letters.

Discussion papers – open for comment

Observed versus simulated mountain waves over Scandinavia – improvement by enhanced model resolution? By J. Wagner et al. in Atmospheric Chemistry and Physics Discussions.

SPARC Science Update: 10-16 September

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

An unexpected disruption of the atmospheric quasi-biennial oscillation. By S.M. Osprey et al. in Science.

Early growth dynamical implications for the steerability of stratospheric solar radiation management via sulfur aerosol particles. By F. Benduhn et al. in Geophysical Research Letters.

Aerosol and Monsoon Climate Interactions over Asia. By Z. Li et al. in Reviews of Geophysics.

Diabatic heating and jet stream shifts: A case study of the 2010 negative NAO winter. By T. Woollings et al. in Geophysical Research Letters.

The Stratospheric Pathway of La Niña. By M. Iza et al. in the Journal of Climate.

Artificial bias typically neglected in comparisons of uncertain atmospheric data. By M.R.A. Pitkänen et al. in Geophysical Research Letters.

Case studies of the impact of orbital sampling on stratospheric trend detection and derivation of tropical vertical velocities: solar occultation vs. limb emission sounding. By L.F. Milan et al. in Atmospheric Chemistry and Physics.

Zonally-resolved impact of ENSO on the stratospheric circulation and water vapor entry values. By P. Konopka et al. in the Journal of Geophysical Research: Atmospheres.

Understanding the varied influence of mid-latitude jet position on clouds and cloud-radiative effects in observations and global climate models. By K.M. Grise and B. Medeiros in the Journal of Climate.

The Quasi-Biennial Oscillation of 2015-16: Hiccup or Death Spiral? By T.J. Dunkerton in Geophysical Research Letters.

Chemical and Dynamical Impacts of Stratospheric Sudden Warmings on Arctic Ozone Variability. By S.E. Strahan et al. in the Journal of Geophysical Research: Atmospheres.

Influence of the solar cycle on the Polar-night Jet Oscillation in the Southern Hemisphere. By Y. Kuroda and M. Deushi in the Journal of Geophysical Research: Atmospheres.

Are Sudden Stratospheric Warmings Generic? Insights from an idealized GCM. By M. Jucker in the Journal of the Atmospheric Sciences.

Discussion papers – open for comment

Oceanic emissions unlikely to account for the missing source of atmospheric carbonyl sulfide. By S.T. Lennartz et al. in Atmospheric Chemistry and Physics Discussions.

Accuracy, precision, and temperature dependence of Pandora total ozone measurements estimated from a comparison with the Brewer triad in Toronto. By X. Zhao et al. in Atmospheric Measurement Techniques Discussions.

Improvement of OMI ozone profile retrievals by simultaneously fitting polar mesospheric clouds. By J. Bak et al. in Atmospheric Measurement Techniques Discussions.

Global carbonyl sulfide (OCS) measured by MIPAS/Envisat during 2002–2012. By N. Glatthor et al. in Atmospheric Chemistry and Physics Discussions.

New-generation NASA Aura Ozone Monitoring Instrument (OMI) volcanic SO2 dataset: Algorithm description, initial results, and continuation with the Suomi-NPP Ozone Mapping and Profiler Suite (OMPS). By C. Li et al. in Atmospheric Measurement Techniques Discussions.

Impact of a moderate volcanic eruption on chemistry in the lower stratosphere: balloon-borne observations and model calculations. By G. Berthet et al. Atmospheric Chemistry and Physics Discussions.

SPARC Science Update: 3-9 September

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

Advancements, measurement uncertainties, and recent comparisons of the NOAA frost point hygrometer. By E.G. Hall et al. in Atmospheric Measurement Techniques.

In situ and space-based observations of the Kelud volcanic plume: The persistence of ash in the lower stratosphere. By J.-P. Vernier et al. in the Journal of Geophysical Research: Atmospheres.

Lessened response of boreal winter stratospheric polar vortex to El Niño in recent decades. By J. Hu et al. in Climate Dynamics.

The effect of representing bromine from VSLS on the simulation and evolution of Antarctic ozone. By L.D. Oman et al. in Geophysical Research Letters.

Evaluation of water vapour assimilation in the tropical upper troposphere and lower stratosphere by a chemical transport model. By S. Payra et al. in Atmospheric Measurement Techniques.

Effects of a warming Arctic. By T.G. Shepherd in Science.

Infrared limb emission measurements of aerosol in the troposphere and stratosphere. By S. Griessbach et al. in Atmospheric Measurement Techniques.

The dynamics of mesoscale winds in the upper troposphere and lower stratosphere. By J. Callies et al. in the Journal of the Atmospheric Sciences.

Uncertainty budgets of major ozone absorption cross sections used in UV remote sensing applications. By M. Weber et al. in Atmospheric Measurement Techniques.

Recent divergences in stratospheric water vapor measurements by frost point hygrometers and the Aura Microwave Limb Sounder. By D.F. Hurst et al. in Atmospheric Measurement Techniques.

Discussion papers – open for comment

Antarctic Ozone Depletion between 1960 and 1980 in Observations and Chemistry-Climate Model Simulations. By U. Langematz et al. in Atmospheric Chemistry and Physics Discussions.

A decadal satellite record of gravity wave activity in the lower stratosphere to study polar stratospheric cloud formation. By L. Hoffmann et al. in Atmospheric Chemistry and Physics Discussions.

Wave Modulation of the Extratropical Tropopause Inversion Layer. By R. Pilch Kedzierski et al. in Atmospheric Chemistry and Physics Discussions.

Evaluation and Error Apportionment of an Ensemble of Atmospheric Chemistry Transport Modelling Systems: Multi-variable Temporal and Spatial Breakdown. By E. Solazzo et al. in Atmospheric Chemistry and Physics Discussions.

SPARC Science Update: 27 August – 2 September

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

Poleward Transport Variability in the Northern Hemisphere during Final Stratospheric Warmings simulated by CESM(WACCM). By R. Thiéblemont et al. in the Journal of Geophysical Research: Atmospheres.

Seasonal Evolution of the QBO-Induced Wave Forcing and Circulation Anomalies in the Northern Winter Stratosphere. By I.P. White et al. in the Journal of Geophysical Research: Atmospheres.

Using a large ensemble of simulations to assess the Northern Hemisphere stratospheric dynamical response to tropical volcanic eruptions and its uncertainty. By M. Bittner et al. in Geophysical Research Letters.

20 years of ClO measurements in the Antarctic lower stratosphere. By G.E. Nedoluha et al. in Atmospheric Chemistry and Physics.

Storm track processes and the opposing influences of climate change. By T.A. Shaw et al. in Nature Geoscience.

Radiative Forcing from Anthropogenic Sulfur and Organic Emissions Reaching the Stratosphere. By P. Yu et al. in Geophysical Research Letters.

Impact of regional atmospheric cloud-radiative changes on shifts of the extratropical jet stream in response to global warming. By A. Voigt and T.A. Shaw in the Journal of Climate.

Representing the effects of stratosphere–troposphere exchange on 3-D O3 distributions in chemistry transport models using a potential vorticity-based parameterization. By J. XIng et al. in Atmospheric Chemistry and Physics.

The Impact of the Asian Summer Monsoon Circulation on the Tropopause. By Y. Wu and T.A. Shaw in the Journal of Climate.

Northern Hemisphere atmospheric blocking representation in Global Climate Models: twenty years of improvements? By P. Davinin and F. D’Andrea in the Journal of Climate.

A comprehensive estimate for loss of atmospheric carbon tetrachloride (CCl4) to the ocean. By J.H. Butler et al. in Atmospheric Chemistry and Physics.

The interaction between atmospheric gravity waves and large-scale flows: an efficient description beyond the non-acceleration paradigm. By G. Bölöni et al. in the Journal of the Atmospheric Sciences.

Discussion papers – open for comment

The CAMS interim Reanalysis of Carbon Monoxide, Ozone and Aerosol for 2003–2015. By J. Flemming et al. in Atmospheric Chemistry and Physics Discussions.