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

Assessing the Impacts of Assimilating IASI and MOPITT CO Retrievals Using CESM-CAM-chem and DART. By J. Barré et al. in the Journal of Geophysical Research: Atmospheres.

Understanding the contrasting North Atlantic Oscillation anomalies of the winters of 2010 and 2014. By G. Rivière and M. Drouard in Geophysical Research Letters.

Global validation of SCIAMACHY limb ozone data (versions 2.9 and 3.0, IUP Bremen) using ozonesonde measurements. By J. Jia et al. in Atmospheric Measurement Techniques.

Momentum Flux Estimates Accompanying Multi-Scale Gravity Waves over Mt. Cook, New Zealand on 13 July 2014 during the DEEPWAVE Campaign. By K. Bossert et al. in the Journal of Geophysical Research: Atmospheres.

Comparison of ozone retrievals from the Pandora spectrometer system and Dobson spectrophotometer in Boulder, Colorado. By J. Herman et al. in Atmospheric Measurement Techniques.

A case study of typhoon-induced gravity waves and the orographic impacts related to Typhoon Mindulle (2004) over Taiwan. By J.F. Wu et al. in the Journal of Geophysical Research: Atmospheres.

Climate extremes in multi-model simulations of stratospheric aerosol and marine cloud brightening climate engineering. By V.N. Aswathy et al. in Atmospheric Chemistry and Physics.

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

A Comparison of Temperature and Precipitation Responses to Different Earth Radiation Management Geoengineering Schemes. By J. Crook et al. in the Journal of Geophysical Research: Atmospheres.

On solar geoengineering and climate uncertainty. By D.G. MacMartin et al. in Geophysical Research Letters.

Study of the wind velocity layered structure in the stratosphere, mesosphere and lower thermosphere by using infrasound probing of the atmosphere. By I. Chunchuzov et al. in the Journal of Geophysical Research: Atmospheres.

Single interval shortwave radiation scheme with parameterized optical saturation and spectral overlaps. By J. Mašek et al. in the Quarterly Journal of the Royal Meteorological Society.

First observations, trends and emissions of HCFC-31 (CH₂ClF) in the global atmosphere. By F. Schoenenberger et al. in Geophysical Research Letters.

Transport of Antarctic stratospheric strongly dehydrated air into the troposphere observed during the HALO-ESMVal campaign 2012. By C. Rolf et al. in Atmospheric Chemistry and Physics.

What is the limit of climate engineering by stratospheric injection of SO₂? By U. Niemeier and C. Timmreck in Atmospheric Chemistry and Physics.

A method for merging nadir-sounding climate records, with an application to the global-mean stratospheric temperature data sets from SSU and AMSU. By C. McLandress et al. in Atmospheric Chemistry and Physics.

Dynamical, convective, and microphysical control on wintertime distributions of water vapor and clouds in the tropical tropopause layer. By R. Ueyama et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

Variability of water vapour in the Arctic stratosphere. By L. Thölix et al. in Atmospheric Chemistry and Physics Discussions.

Polar Stratospheric Cloud evolution and chlorine activation measured by CALIPSO and MLS, and modelled by ATLAS. By H. Nakajima et al. in Atmospheric Chemistry and Physics Discussions.

Upper tropospheric water vapour variability at high latitudes – Part 1: Influence of the annular modes. By C.E. Sioris et al. in Atmospheric Chemistry and Physics Discussions.

The fact sheet prepared by the SPARC Office on the "Impact of the changing climate on the ozone layer" is available in German and French.

Find more fact sheets.

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

Impact of the 2009 major sudden stratospheric warming on the composition of the stratosphere. By M. Tao et al. in Atmospheric Chemistry and Physics.

New calibration noise suppression techniques for the GLORIA limb imager. By T. Guggenmoser et al. in Atmospheric Measurement Techniques.

Global and seasonal variations in three-dimensional gravity wave momentum flux from satellite limb sounding temperatures. By M.J. Alexander in Geophysical Research Letters.

Rapid increases in tropospheric ozone production and export from China. By W.W. Verstraeten et al. in Nature Geoscience.

A comparison of chemical mechanisms using tagged ozone production potential (TOPP) analysis. By J. Coates and T.M. Butler in Atmospheric Chemistry and Physics.

New and improved infrared absorption cross sections for dichlorodifluoromethane (CFC-12). By J.J. Harrison in Atmospheric Measurement Techniques.

Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer. By P.S. Monks et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

The tropopause inversion layer in baroclinic life cycles experiments: the role of diabatic and mixing processes. By D. Kunkel et al. in Atmospheric Chemistry and Physics Discussions.

Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering. By A. Laakso et al. in Atmospheric Chemistry and Physics Discussions.

The conference Global Climate Observation: the Road to the Future will be held from 2-4 March 2016 in Amsterdam, the Netherlands.

The conference provides an opportunity to shape the new GCOS implementation plan. The main goals of the meeting are to

• show how ECVs have helped shaping our understanding of climate
• discuss observations for adaptation, mitigation and disaster risk reduction
• identify critical gaps in the observing system
• identify future areas for the use and development of new technology.

The main outcome should be a list of priority and additional actions that can be included in a new GCOS Implementation plan. Guidance on how GCOS should align its work plan with other related climate policy activities (RAMSAR, CBD, etc) and work programmes is also expected.

Registration opens on 15 October 2015.

For further information find GCOS conference website.

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

Merging the OSIRIS and SAGE II stratospheric aerosol records. By L.A. Rieger et al. in the Journal of Geophysical Research: Atmospheres.

Atlantic opportunities for ENSO prediction. By M. Martín-Reyin et al. in Geophysical Research Letters.

Solar influences on spatial patterns of Eurasian winter temperature and atmospheric general circulation anomalies. By H. Chen et al. in the Journal of Geophysical Research: Atmospheres.

GOMOS bright limb ozone data set. By S. Tukiaienen et al. in Atmospheric Measurement Techniques.

Indian Monsoon and the Elevated-Heat-Pump Mechanism in a Coupled Aerosol-Climate Model. By M. D’Errico et al in the Journal of Geophysical Research: Atmospheres.

Connection of predictability of major stratospheric sudden warmings to polar vortex geometry. By M. Taguchi in Atmospheric Research Letters.

Mechanisms of Stratospheric and Tropospheric Circulation Response to Projected Arctic Sea Ice Loss. By L. Sun et al. in the Journal of Climate.

Discussion papers – open for comment

On the emissions and transport of bromoform: sensitivity to model resolution and emission location. By M.R. Russo et al. in Atmospheric Chemistry and Physics Discussions.

Meteorological constraints on oceanic halocarbons above the Peruvian Upwelling. By S. Fuhlbrügge et al. in Atmospheric Chemistry and Physics Discussions.

How to most effectively expand the global surface ozone observing network. By E.D. Sofen et al. in Atmospheric Chemistry and Physics Discussions.

Abstract submission and travel support application deadline: 10 December 2015. Registration deadline: 10 February 2016.

A workshop focussing on atmospheric blocking will be held at the University of Reading from the 6th to the 8th of April 2016. The topics will focus on:

• the different diagnostic tools used to identify blocking;
• the past trends in blocking frequency and links with extreme weather conditions;
• the representation of blocking in the NWP and climate models and its response to forcings.

This will be a unique opportunity to bring together members of the climate and weather community as well as fundamental and applied researcher working on blocking-related topics.

For more information see the workshop webpage.

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

Future Directions for the World Climate Research Programme. By G. Brasseur and D. Carlson in EOS.

On the accuracy of stratospheric aerosol extinction derived from in situ size distribution measurements and surface area density derived from remote SAGE II and HALOE extinction measurements. By M. Kovilakam and T. Deshler in the Journal of Geophysical Research: Atmospheres.

Decadal hindcasts initialised using observed surface wind stress: Evaluation and Prediction out to 2024. By M. Thoma et al. in Geophysical Research Letters.

Temporal variations of flux and altitude of sulfur dioxide emissions during volcanic eruptions: implications for long-range dispersal of volcanic clouds. By M. Boichu et al. in Atmospheric Chemistry and Physics.

A tropospheric chemistry reanalysis for the years 2005–2012 based on an assimilation of OMI, MLS, TES, and MOPITT satellite data. By K. Miyazaki et al. in Atmospheric Chemistry and Physics.

Stratospheric response to intraseasonal changes in incoming solar radiation. By C.I. Garfinkel et al. in the Journal of Geophysical Research: Atmospheres.

Self Acceleration and Instability of Gravity Wave Packets: 1. Effects of Temporal Localization. By D.C. Fritts et al. in the Journal of Geophysical Research: Atmospheres.

Two decades of water vapor measurements with the FISH fluorescence hygrometer: a review. By J. Meyer et al. in Atmospheric Chemistry and Physics.

Extended and refined multi sensor reanalysis of total ozone for the period 1970–2012. By R.J. van der A et al. in Atmospheric Measurement Techniques.

Global distributions of overlapping gravity waves in HIRDLS data. By C.J. Wright et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment

The imprint of stratospheric transport on column-averaged methane. By A. Ostler et al. in Atmospheric Chemistry and Physics Discussions.

Implications of model bias in carbon monoxide for methane lifetime. By S.A. Strode et al. in Atmospheric Chemistry and Physics Discussions.

Registration is open for the workshop held on 20-22 September 2016 in Richland WA, USA

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Call for Nominations – due date for nominations is 1 October 2015

Find more information.