SPARC Science Update: 10-16 December

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

Atmospheric seasonal forecasts of the 20th Century: multi-decadal variability in predictive skill of the winter North Atlantic Oscillation (NAO) and their potential value for extreme event attribution. By A. Weisheimer et al. in the Quarterly Journal of the Royal Meteorological Society.

Monsoon circulations and tropical heterogeneous chlorine chemistry in the stratosphere. By S. Solomon et al. in Geophysical Research Letters.

The Influence of Ozone Forcing on Blocking in the Southern Hemisphere. By F. Dennison et al. in the Journal of Geophysical Research: Atmospheres.

Long-range transport pathways of tropospheric source gases originating in Asia into the northern lower stratosphere during the Asian monsoon season 2012. By B. Vögel et al. in Atmospheric Chemistry and Physics.

Harmonisation and diagnostics of MIPAS ESA CH4 and N2O profiles using data assimilation. By Q. Errera et al. in Atmospheric Measurement Techniques.

Impact of interactive chemistry of stratospheric ozone on southern hemisphere paleoclimate simulation. By S. Noda et al. in the Journal of Geophysical Research: Atmospheres.

The major stratospheric final warming in 2016: dispersal of vortex air and termination of Arctic chemical ozone loss. By G.L. Manney and Z.D. Lawrence in Atmospheric Chemistry and Physics.

Heterogeneous reaction of ClONO2 with TiO2 and SiO2 aerosol particles: implications for stratospheric particle injection for climate engineering. By M. Tang et al. in Atmospheric Chemistry and Physics.

Reduced Southern Hemispheric circulation response to quadrupled CO2 due to stratospheric ozone feedback. By G. Chiodo and L.M. Polvani in Geophysical Research Letters.

Global atmospheric teleconnections during Dansgaard–Oeschger events. By B.R. Markle et al. in Nature Geoscience.

Stratospheric solar geoengineering without ozone loss. By D.W. Keith et al. in Proceedings of the National Academy of Sciences of the United States of America.

Initialization shock in decadal hindcasts due to errors in wind stress over the tropical Pacific. By H. Pohlmann et al. in Climate Dynamics.

Poleward eddy heat flux anomalies associated with recent Arctic sea-ice loss. By K. Hoshi et al. in Geophysical Research Letters.

A connection from Arctic stratospheric ozone to El Niño-Southern oscillation. By F. Xie et al. in Environmental Research Letters.

Multidecadal variations of the effects of the Quasi-Biennial Oscillation on the climate system. By S. Brönnimann et al. in Atmospheric Chemistry and Physics.

Directional gravity wave momentum fluxes in the stratosphere derived from high resolution AIRS temperature data. By M. Ern et al. in Geophysical Research Letters.

An upper-branch Brewer–Dobson circulation index for attribution of stratospheric variability and improved ozone and temperature trend analysis. By W.T. Ball et al. in Atmospheric Chemistry and Physics.

Stratospheric variability contributed to and sustained the recent hiatus in Eurasian winter warming. By C.I. Garfinkel et al. in Geophysical Research Letters.

Discussion papers – open for comment

HEPPA-II model-measurement intercomparison project: EPP indirect effects during the dynamically perturbed NH winter 2008–2009. By B. Funke et al. in Atmospheric Chemistry and Physics Discussions.

Widespread persistent polar stratospheric ice clouds in the Arctic. By C. Voigt et al. in Atmospheric Chemistry and Physics Discussions.

Changing trends and emissions of hydrochlorofluorocarbons and their hydrofluorocarbon replacements. By P.G. Simmonds et al. in Atmospheric Chemistry and Physics Discussions.

The 9th Atmospheric Limb Workshop: 12-14 June 2017, Saskatoon, Canada

The 9th International Atmospheric Limb Workshop will be hosted by the Atmospheric Remote Sensing Group from the University of Saskatchewan at the Sheraton Cavalier hotel in downtown Saskatoon.

Over the course of the three day meeting, oral and poster sessions will cover many aspects of both measurements techniques and scientific applications of atmospheric limb sounding. Presentations will be dedicated to past, current and future limb missions, sub-orbital instrumentation, and scientific studies of processes and trends in the stratosphere, mesosphere, and the UTLS. We will also hear from representatives of several space agencies and international programmes.

Abstract submission deadline: 15 March 2017

Early-bird registration deadline: 12 May 2017

Find more information and register at: http://limb2017.usask.ca

First Announcement: 3rd ACAM Workshop in Guangzhou, China – 5-9 June 2017

Registration and abstract submission deadline: 15 March 2017

The 3rd ACAM Workshop, to be held at Jinan University, Guangzhou, China, 5-9 June 2017, is now accepting registrations and abstract submissions.

Applications are also being accepted for the 2nd ACAM Training School, which takes place immediately following the workshop.

Please go to the meeting website for instructions:
https://www2.acom.ucar.edu/acam/guangzhou-2017

It is important to follow the instructions carefully as you go through the process.

Specific instructions are given for:

  • Workshop registration
  • Abstract submission (registration required)
  • Training school application (open to early career scientists; workshop attendance is required)
  • Travel support application

Special note for travel support:

  • Please do not apply for travel support unless it is absolutely necessary for you to attend the workshop.
  • Preference for travel support will be given to
    • Applicants from emerging scientific communities to promote capacity building
    • Applicants who are making significant contribution to ACAM science and working group activities as verified by the working group leaders.

We look forward to building on the success of the first two workshops and having strong participation in this important scientific and community building event.

SPARC Science Update: 3-9 December

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

Adapted ECC ozonesonde for long-duration flights aboard boundary-layer pressurised balloons. By F. Gheusi et al. in Atmospheric Measurement Techniques.

Validation of ACE-FTS version 3.5 NOy species profiles using correlative satellite measurements. By P.E. Sheese et al. in Atmospheric Measurement Techniques.

Multiple subtropical stratospheric intrusions over Reunion Island : observational, lagrangian and eulerian numerical modeling approaches. By H. Vérèmes et al. in the Journal of Geophysical research: Atmospheres.

Tropospheric Transport Differences Between Models Using the Same Large-Scale Meteorological Fields. By C. Orbe et al. in Geophysical Research Letters.

When Stratospheric Ozone Hits Ground-level Regulation – Exceptional Events in Wyoming. By B. Kaldunski et al. in the Bulletin of the American Meteorological Society.

Stratospheric control of Madden Julian Oscillation. By S.-W. Son et al in the Journal of Climate.

Impact of Atmospheric Blocking on South America in Austral Summer. By R.R. Rodrigues and T. Woollings in the Journal of Climate.

Recent advances in satellite data rescue. By P. Poli et al. in the Bulletin of the American Meteorological Society.

Characterising tropospheric O3 and CO around Frankfurt over the period 1994–2012 based on MOZAIC–IAGOS aircraft measurements. By H. Petetin et al. in Atmospheric Chemistry and Physics.

Interannual variations of early winter Antarctic polar stratospheric cloud formation and nitric acid observed by CALIOP and MLS. By A. Lambert et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

Modelling the Inorganic Bromine Partitioning in the Tropical Tropopause over the Pacific Ocean. By M.A. Navarro et al. in Atmospheric Chemistry and Physics Discussions.

First Announcement: GAW 2017 Symposium in Geneva, Switzerland – 10-13 April 2017

Registration deadline: 25 December 2016

The Global Atmosphere Watch Programme (GAW) of the World Meteorological Organization (WMO) is organizing its next symposium on 10-13 April 2017 at the WMO Office in Geneva.

GAW symposia are organized every 4 years in order to gather the GAW research and observational community and existing/potential partners to reassess the programme and discuss issues of importance for a successful future.

This next symposium will take place in the context of a new GAW Implementation Plan for 2016-2023 (GAW IP), which will be published before the end of 2016.

The objectives of the 2017 GAW Symposium are to:

  • Assess the state of the underpinning science;
  • Review programme elements in the context of the new GAW IP;
  • Develop work plans with clear outcomes and timelines for implementing activities in the new GAW IP;
  • Foster further collaborations within and external to GAW;
  • Enhance GAW’s capacity to increase its relevance to partners/clients and to strengthen support for its activities;
  • Demonstrate success of the GAW programme.

There is no registration fee.

For further details and registration visit the website.

SPARC Science Update: 26 November – 2 December

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

The extraordinarily strong and cold polar vortex in the early northern winter 2015/16. By V. Matthias et al. in Geophysical Research Letters.

Movement, drivers and bimodality of the South Asian High. By M. Nützel et al. in Atmospheric Chemistry and Physics.

Distinguishing stratospheric sudden warmings from ENSO as key drivers of wintertime climate variability over the North Atlantic and Eurasia. By L.M. Polvani et al. in the Journal of Climate.

A case study of long gravity wave crests in noctilucent clouds and their origin in the upper tropospheric jet stream. By P. Dalin et al. in the Journal of Geophysical research: Atmospheres.

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.

Discussion papers – open for comment

Trace gas composition in the Asian summer monsoon anticyclone: A case study based on aircraft observations and model simulations. By K.D. Gottschaldt et al. in Atmospheric Chemistry and Physics Discussions.

Quantifying the vertical transport of CHBr3 and CH2Br2 over the Western Pacific. By R. Butler et al. in Atmospheric Chemistry and Physics Discussions.

Changes to the chemical state of the northern hemisphere atmosphere during the second half of the twentieth century. By M.J. Newland et al. in Atmospheric Chemistry and Physics Discussions.

An Atlantic streamer in stratospheric ozone observations and SD-WACCM simulation data. By K. Hocke et al. in Atmospheric Chemistry and Physics Discussions.