The EGU General Assembly 2018 will take place on 8-13 April 2018 in Vienna, Austria.

Find sessions of special interest to the SPARC community here. Note the abstract submission deadline on 10 January 2018.

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

Five priorities for weather and climate research. By Ø. Hov et al. in Nature.

Changing transport processes in the stratosphere by radiative heating of sulfate aerosols. By U. Niemeier and H. Schmidt in Atmospheric Chemistry and Physics.

Mountain waves modulate the water vapor distribution in the UTLS. By R. Heller et al. in Atmospheric Chemistry and Physics.

Testing the sensitivity of the extratropical response to the location, amplitude, and propagation speed of tropical convection. By M. Goss and S.B. Feldstein in the Journal of Atmospheric Sciences.

Surface impacts of the Quasi Biennial Oscillation. By L.J. Gray et al. in Atmospheric Chemistry and Physics Discussions.

Observations of the Breakdown of Mountain Waves over the Andes Lidar Observatory at Cerro Pachon on July 8/9, 2012. By J.H. Hecht et al. in the Journal of Geophysical Research: Atmospheres.

An even longer road to recovery? By J. Fahrenkamp-Uppenbrink in Science.

Improving variational data assimilation through background and observation error adjustments. By J.P Mattern, C.A. Edwards, and A.M. Moore in the Monthly Weather Review.

Climatology and interannual variability of dynamic variables in multiple reanalyses evaluated by the SPARC Reanalysis Intercomparison Project (S-RIP). By C.S. Long et al. in Atmospheric Chemistry and Physics.

Mechanisms Governing Interannual Variability of Stratosphere to Troposphere Ozone Transport. By J.R. Albers et al. in the Journal of Geophysical Research: Atmospheres.

The Tropospheric Ozone Assessment Report (TOAR), a current IGAC activity, is available online for open comment.

The author team includes Gina Mills, Håkan Pleijel, Christopher S. Malley, Baerbel Sinha, Owen Cooper, Martin Schultz, Howard S. Neufeld, David Simpson, Katrina Sharps, Zhaozhong Feng, Giacomo Gerosa, Harry Harmens, Kazuhiko Kobayashi, Pallavi Saxena, Elena Paoletti, Vinayak Sinha, and Xiaobin Xu.

Find information on TOAR and the open-comment papers. Note that the open-comment period closes on 7 January 2018.

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

The South Georgia Wave Experiment (SG-WEX) – a means for improved analysis of gravity waves and low-level wind impacts generated from mountainous islands. By D.R. Jackson et al. in the Bulletin of the American Meteorological Society.

Characterizing stratospheric polar vortex variability with computer vision techniques. By Z.D. Lawrence and G.L. Manney in the Journal of Geophysical Research: Atmospheres.

Multi-year composite view of ozone enhancements and stratosphere-to-troposphere transport in dry intrusions of northern hemisphere extratropical cyclones. By L. Jaeglé et al. in the Journal of Geophysical Research: Atmospheres.

Sensitivities of modelled water vapour in the lower stratosphere: temperature uncertainty, effects of horizontal transport and small-scale mixing. By L. Poshyvailo et al. in Atmospheric Chemstry and Physics.

Large-Scale Tropospheric Transport in the Chemistry Climate Model Initiative (CCMI) Simulations. By C. Orbe et al. in Atmospheric Chemistry and Physics.

This year’s ERC Workshop entitled “Towards Regional Information to Improve our Understanding on Weather, Water and Climate Extreme Events” takes place on 3-5 May 2018 in Canmore, Alberta, Canada.

Note the abstract submission deadline is 18 December!

Find more information on the ERC 2018 workshop.

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

Nonlinear Bias Correction For Satellite Data Assimilation Using Taylor Series Polynomials. By J.A. Otkin et al. in the Monthly Weather Review.

Changing circulation structure and precipitation characteristics in Asian monsoon regions: greenhouse warming vs. aerosol effects. By W.K.M. Lau et al. in the Geoscience Letters.

Driving Roles of Tropospheric and Stratospheric Thermal Anomalies in Intensification and Persistence of the Arctic Superstorm in 2012. By W. Tao et al. in the Geophysical Research Letters.

Advancing Climate Forecasting. By W.J. Merryfield et al. in Earth & Space Science News.

Development of a Polar Stratospheric Cloud Model Within the Community Earth System Model: Assessment of 2010 Antarctic Winter. By Y. Zhu et al. in the Journal of Geophysical Research: Atmospheres.

Observing the Impact of Calbuco Volcanic Aerosols on South Polar Ozone Depletion in 2015. By K.A. Stone et al. in the Journal of Geophysical Research: Atmospheres.

A Model and Satellite-Based Analysis of the Tropospheric Ozone Distribution in Clear Versus Convectively Cloudy Conditions. By S.A. Strode et al. in the Journal of Geophysical Research: Atmospheres.

Significant Contributions of Volcanic Aerosols to Decadal Changes in the Stratospheric Circulation. By M. Diallo et al. in the Geophysical Research Letters.

Formaldehyde in the Tropical Western Pacific: Chemical Sources and Sinks, Convective Transport, and Representation in CAM-Chem and the CCMI Models. By D.C. Anderson et al. in the Journal of Geophysical Research: Atmospheres.

Find an EOS article from 27 November 2017 on WCRP’s efforts in coordinating research which aims at improving and extending global climate forecasting capabilities.