Purpose:

The purpose of the Symposium is to provide a forum for scientists and technologists to explore  and present information on the potential causes of the increased CFC-11 emissions. This  information will provide a firmer scientific basis for discussions amongst the Parties of the  Montreal Protocol in the coming years. The Symposium is open to discussions on all aspects of  CFC-11 and related compounds, from production to atmospheric loss, along with  environmental impact of the molecule

Topics include, but are not exclusive:
• Pathways by which CFC-11 is produced primarily, or inadvertently, along with feedstocks  for that production (e.g., CCl4) and co-produced compounds (e.g., CFC-12).
• Feedstock usages of CFC-11
• Primary usages of CFC-11, both historical and current
• Emission sources for CFC-11 and related compounds, their magnitudes, and timescales  for CFC-11 release.
• Analysis of compounds that can be used to trace atmospheric transport of CFC-11
• Bottom-up estimates of global and regional CFC-11 emissions
• Atmospheric observations, sampling techniques, and analysis of CFC-11 and related  compounds (ground, aircraft, satellite)
• Top-down emission estimates of global and regional CFC-11 emissions
• Lifetime estimates of CFC-11 and CFC-11 loss processes
• Ozone depletion from the increased emissions to date, and projected for the future
• Other environmental impact of the increased emissions, including increases of UV and climate.

Registration information:

The Symposium is limited to 100 persons. Hence, attendance will be approved by the Scientific  Steering Committee if applications are oversubscribed. Priorities on attendance will be based upon (a) whether an applicant has submitted an accepted abstract and (b) their technical and scientific interests and standing.
Limited travel funding will be available for attendance, again subject to priorities outlined  above.

Registration will be open until January 2, 2019

More information

Register

Abstract submission is now open for the

“CMIP6 Model Analysis Workshop”
25-28 March 2019,  Barcelona Supercomputing Center (BSC), Barcelona (Spain)

Please go to  https://cmip6workshop19.sciencesconf.org/

The workshop is jointly organized by the WCRP Working Group on Coupled Modelling (WGCM) CMIP Panel and the European Commission Horizon 2020 projects PRIMAVERA (PRocess-based climate sIMulation: AdVances in high-resolution modelling and European climate Risk Assessment) and EUCP (EUropean Climate Prediction system).

Following the format of the WCRP CMIP5 model analysis workshop held in 2012, the workshop focus will be on:

• Single and multi-model CMIP6 analyses and evaluation that takes advantage of the large suite of CMIP6 experiments
• Efforts to connect model development and analysis to identify Earth system model improvements that help reduce systematic biases and/or increase the realism of models
• Methods for multi-model analysis
• Climate change impacts

The workshop will be structured around the three scientific questions:

1. How does the Earth system respond to forcing?
2. What are the origins and consequences of systematic model biases?
3. How can we assess future climate change given climate variability, predictability and uncertainty in scenarios.

Workshop approach

Short-presentation/poster format

The workshop will consist of a series of seven half-day sessions of three hours each. Each session will begin with 20-25 presenters given a 3 minute time slot to show no more than one slide summarizing the main conclusions of their poster. The rest of the half-day session will consist of viewing posters of that session. In addition, there will be an invited plenary talk each day.

Participation is limited by the size of the venue (~200 people) and format of the workshop.  Abstracts will be accepted based on relevance to the workshop focus.

Timeline

• Abstract submission opens:                              15 October 2018
• Abstract submission deadline:                          15 December 2018
• Abstract / Participation acceptance:                  15 January 2019

Hope to see you in Barcelona next year!

Best wishes,

Scientific Organizing Committee of the Workshop

Veronika Eyring, Greg Flato, Jean-Francois Lamarque, Jerry Meehl, Cath Senior, Ron Stouffer, and Karl Taylor (CMIP Panel)
Francisco J. Doblas-Reyes (EUCP)
Malcolm Roberts (PRIMAVERA)

Bad Honnef Physics Schools offer young researchers the possibility to deepen their knowledge and skills in advanced and cutting-edge topics in all areas of physics. The Schools address primarily PhD and Master students and they are open for international participation. The one-week Schools take place at the Physikzentrum Bad Honnef (PBH) and are intended for 60 to 90 participating students.

The main goal of the Bad Honnef Physics School on Atmospheric Physics is to overcome the limitation of disciplinary thinking and to provide the attendees with the possibility to obtain scientifically sound and highly relevant information on the most important sub-disciplines of atmospheric physics, presented by internationally recognized experts. The Bad Honnef Physics School will combine expertise of scientists representing theoretical and experimental approaches. On the theoretical side experts on chemical-transport modelling, atmospheric dynamics modelling as well as modelling atmospheric and climate effects of large volcanic eruptions provide insight into their fields.

The target group of the Bad Honnef Physics school on Atmospheric Physics consists of Master & Ph.D. students in atmospheric or environmental physics and related disciplines (e.g. meteorology, atmospheric chemistry, environmental sciences).

The school will take place April 29 – May 3, 2019, at the Physikzentrum Bad Honnef, Germany

Read more

The Application Form

The EGU 2019 General Assembly, taking place in Vienna (Austria) on 7–12 April 2019, will bring together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary and space sciences. The deadline for abstract submission is 10 January 2019 or, for those applying for Roland Schlich travel support, 1 December 2018.

Only 2019 EGU members will be able to submit abstracts as first author to the 2019 meeting and, with a few exceptions outlined below, only one abstract as first author will be permitted.

Find more information on the EGU webpage

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

Highlight articles (office choice):

Continued Emissions of the Ozone‐Depleting Substance Carbon Tetrachloride From Eastern Asia. By M.F. Lunt et al. in the Geophysical Research Letters.

Zonal-mean data set of global atmospheric reanalyses on pressure levels. By P. Martineau et al. in Earth System Science Data.

Evidence for Changes in Arctic Cloud Phase Due to Long‐Range Pollution Transport. By Q. Coopman et al. in the Geophysical Research Letters.

A numerical study of gravity wave propagation characteristics in the stratospheric thermal duct. By W. Dong et al. in the Journal of Geophysical Research: Atmospheres.

Duration and decay of Arctic stratospheric vortex events in the ECMWF seasonal forecast model. By Y.J.Orsolini, K. Nishii, and H. Nakamura in the Quarterly Journal of the Royal Meteorological Society.

The key role of ozone depleting substances in weakening the Walker circulation in the second half of the 20th century. By L.M. Polvani and K. Bellomo in the Journal of the Climate.

Sensitivity of the surface orographic gravity wave drag to vertical wind shear over Antarctica. By H.V. Turner et al. in the Quarterly Journal of the Royal Meteorological Society.

The Downward Influence of Sudden Stratospheric Warmings: Association with Tropospheric Precursors. By Ian White et al. in the Journal of the Climate.

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

Comparison of mean age of air in five reanalyses using the BASCOE transport model. By S. Chabrillat et al. in Atmospheric Chemistry and Physics.

Reconciling Hadley Cell Expansion Trend Estimates in Reanalyses. By N.A. Davis and S.M. Davis in the Geophysical Research Letters.

Wintertime transport of reactive trace gases from East Asia into the deep tropics. By V. Donets et al. in the Journal of Geophysical Research: Atmospheres.

Anomalous Behaviour of Vertical Wavenumber Spectra over a Tropical Station of India. By P. Ghosh, T.K. Ramkumar, and S. Sharma in the Geophysical Research Letters.

A new scenario resource for integrated 1.5 °C research. By D. Huppmann et al. in Nature: Climate Change.

Using machine learning to build temperature-based ozone parameterizations for climate sensitivity simulations. By P. Nowack et al. in the Environmental Research Letters.

The importance of stratospheric initial conditions for winter North Atlantic Oscillation predictability and implications for the signal‐to‐noise paradox. By C.H. O’Reilly et al. in the Quarterly Journal of the Royal Meteorological Society.

Lapse Rate or Cold Point: The Tropical Tropopause Identified by In Situ Trace Gas Measurements. By L.L. Pan et al. in the Geophysical Research Letters.

Scientific Writing: The Predicament of Weather and Climate Scientists in India. By A.S.D. Rajput in the Bulletin of the American Meteorological Society.

Variability in Atmospheric Methane From Fossil Fuel and Microbial Sources Over the Last Three Decades. By R.L. Thompson et al. in the Geophysical Research Letters.

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

Distinguishing trends and shifts from memory in climate data. By C. Beaulieu and R. Killick in the Journal of the Climate.

Wireless Frequency Sharing May Impede Weather Satellite Signals. By J. Gerth in EOS.

On the Upward Extension of the Polar Vortices Into the Mesosphere. B V.L. Harvey et al. in te Journal of Geophysical Research: Atmospheres.

The role of synoptic‐scale waves in the onset of the South China Sea summer monsoon. By J. Huangfu et al. in the Atmospheric Science Letters.

Atmospheric Kelvin–Helmholtz billows captured by the MU radar, lidars and a fish-eye camera. By H. Luce et al. in Earth, Planets and Space.

Convectively Generated Gravity Waves in High Resolution Models of Tropical Dynamics. By S.K. Müller et al. in the Journal of Advances in Modeling Earth Systems.

Stratosphere Perturbed by the 2011 Mw9.0 Tohoku Earthquake. By X. Yan et al. in the Geophysical Research Letters.

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

North American Weather Regimes Are Becoming More Persistent: Is Arctic Amplification a Factor? By J.A. Francis, N. Skific, and S.J. Vavrus in the Geophysical Research Letters.

Gravitational separation of the stratospheric air over Syowa, Antarctica and its connection with meteorological fields. By S. Ishidoya et al. in the Atmospheric Science Letters.

Momentum Flux of Convective Gravity Waves Derived from an Offline Gravity Wave Parameterization. Part II: Impacts on the Quasi-Biennial Oscillation. By M.-J. Kang et al. in the Journal of the Atmospheric Sciences.

Prediction of the Madden-Julian Oscillation: A Review. By H. Kim, F. Vitart and D.E. Waliser in the Journal of the Climate.

The circulation response to resolved versus parametrized orographic drag over complex mountain terrains. By A. van Niekerk, I. Sandu, and S. Vosper in the Journal of Advances in Modeling Earth Systems.

Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies. By M. Rapp, A. Dörnbrack and P. Preusse in the Geophysical Research Letters.

Effect of upper- and lower-level baroclinicity on the persistence of the leading mode of midlatitude jet variability. By L. Robert, G. Rivière and F. Codron in the Journal of the Atmospheric Sciences.

Dynamics and predictability of the El Niño-Southern Oscillation: An Australian perspective on progress and challenges. By A. Santoso et al. in the Bulletin of the American Meteorological Society.

Comparison of Subseasonal‐to‐Seasonal Model Forecasts for Major Stratospheric Sudden Warmings. By M. Taguchi in the Journal of Geophysical Research: Atmospheres.

How well do stratospheric reanalyses reproduce high-resolution satellite temperature measurements? By C.J. Wright and N.P. Hindley in Atmospheric Chemistry and Physics.

Full Access On the Choice of Momentum Control Variables and Covariance Modeling for Mesoscale Data Assimilation. By Q. Xu in the Journal of the Atmospheric Sciences.

WCRP is awarding annually, together with its two respective partners WWRP and GCOS, two prizes for notable achievements in model as well as data development. The “WCRP/WWRP International Prize for Model Development” has been awarded since 2014 for outstanding contributions to model development by WCRP and the World Weather Research Programme (WWRP). In 2016, the “WCRP/GCOS International Data Prize 2018” has been established by WCRP and the Global Climate Observing System (GCOS), rewarding provision of climate or Earth system data that had a visible impact on the community.

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

Revisiting ozone measurements as an indicator of tropical width. By S.M. Davis, B. Hassler, and K.H. Rosenlof in Progress in Earth and Planetary Science.

Evidence for Radiative‐Convective Bistability in Tropical Atmospheres. By M. Dewey, C. Goldblatt in the Geophysical Research Letters.

A Parameterization of Turbulent‐Scale and Mesoscale Orographic Drag in a Global Atmospheric Model. By M-S. Koo, H.-J. Choi, and J.-Y. Han in the Journal of Geophysical Research: Atmospheres.

Striking stationarity of large-scale climate model bias patterns under strong climate change. By G. Krinner and M.G. Flanner in the Proceedings of the National Academy of Sciences of the United States of America.

The Global Historical Climatology Network Monthly Temperature Dataset, Version 4. By M.J. Menne et al. in the Journal of the Climate.

Role of Finite-Amplitude Eddies and Mixing in the Life Cycle of Stratospheric Sudden Warmings. By S.L. Lubis, C.S.Y. Huang, and N. Nakamura in the Journal of the Atmospheric Sciences.

Recent Southern Ocean warming and freshening driven by greenhouse gas emissions and ozone depletion. By N.C. Swart et al. in Nature Geoscience.

The Influences of the Arctic Troposphere on the Midlatitude Climate Variability and the Recent Eurasian Cooling. By K. Ye, T. Jung, and T. Semmler in the Journal of Geophysical Research: Atmospheres.

Subseasonal prediction of wintertime East Asian temperature based on atmospheric teleconnections. By C. Yoo et al. in the Journal of the Climate.