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

Causes of climate change over the historical record. By G.C. Hegerl et al. in the Environmental Research Letters.

Wintertime North American Weather Regimes and the Arctic Stratospheric Polar Vortex. By S.H. Lee, J.C. Furtado, and A.J. Charlton-Perez in the Geophysical Research Letters.

Observed Sub‐Decadal Variations of European Summer Temperatures. By W.A. Müller, L. Borchert, and R. Ghosh in the Geophysical Research Letters.

Interannual Variation of Upper Stratospheric Ozone in the Northern Midlatitudes in Early Winter Caused by Planetary Waves. By H. Ohyama et al. in the Journal of Geophysical Research: Atmospheres.

How does knowledge of atmospheric gravity waves guide their parameterizations? By R. Plougonven et al. in the Quarterly Journal of the Royal Meteorological Society.

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

Divergent consensuses on Arctic amplification influence on midlatitude severe winter weather. By J. Cohen et al. in nature climate change.

Unanticipated Side Effects of Stratospheric Albedo Modification Proposals Due to Aerosol Composition and Phase. By D.J. Cziczo et al. in nature scientific reports.

Effects of AO on the interdecadal oscillating relationship between the ENSO and East Asian winter monsoon. By C. Dong, S. Jianqi, and G. Ya in the International Journal of Climatology.

Long‐Term Changes in the Northern Midwinter Middle Atmosphere in Relation to the Quasi‐Biennial Oscillation. By A. Gabriel in the Journal of Geophysical Research: Atmospheres.

Gravity waves in the winter stratosphere over the Southern Ocean: high-resolution satellite observations and 3-D spectral analysis. By N.P. Hindley et al. in Atmospheric Chemistry and Physics.

Observed Relationships Between Sudden Stratospheric Warmings and European Climate Extremes. By A.D. King et al. in the Journal of Geophysical Research: Atmospheres.

So what’s in an Earth System Model? By C.D. Jones in the Journal of Advances in Modeling Earth Systems.

The efficiency of transport into the stratosphere via the Asian and North American summer monsoon circulations. By X. Yan et al. in Atmospheric Chemistry and Physics.

Discussion articles – open for comments:

Confinement of air in the Asian monsoon anticyclone and pathways of convective air to the stratosphere during summer season. By B. Legras and S. Bucci in Atmospheric Chemistry and Physics.

The vertical Structure and spatial Variability of lower tropospheric Water Vapor and Clouds in the Trades. By A.K. Naumann and C. Kiemle in Atmospheric Chemistry and Physics.

Vertical wind profiling from troposphere to the lower mesosphere based on high resolution heterodyne near-infrared spectroradiometry. By A.V. Rodin et al. in Atmospheric Measurement Techniques.

40 years High Arctic climatological dataset of the Polish Polar Station Hornsund (SW Spitsbergen, Svalbard). By T. Wawrzyniak and M. Osuch in Earth System Science Data.

This is the 3rd announcement for the 3rd International Workshop on Stratospheric Sulfur and its Role in Climate (SSiRC).  The workshop will be held at the University of Leeds in the Liberty Building (School of Law) from 30th March to 1st April 2020.

The meeting’s focus will be on observations and modelling of the stratospheric aerosol layer and its sources and, particularly, to understand volcanic impacts on stratospheric composition and climate.  Other related research topics are  welcome particularly those associated with recent volcanic activity (e.g., Raikoke) and the scientific response to them, recent field campaigns (e.g. StratoClim, AToM, ASPEN), community modelling activities (e.g. ISA-MIP, VolMIP and GeoMIP) and related science programs (e.g. OCTAV-UTLS, CCMI, PAGES, VICS).

Registration and Abstract submission is now OPEN.

The web site for abstract submission and registration is open.  There is some travel support available for early career scientists and scientists from developing countries. Directions on how to apply for travel support is also on the web site.  The web site is found here:

https://eu.eventscloud.com/ehome/200197691/

Abstract deadline: Feb 16th 2020

The organizing committee

The organizing committee includes Graham Mann (Univ. Leeds, U.K.), Stefanie Kremser (Bodeker Scientific, New Zealand), Landon Rieger (Univ. of Saskatchewan, Canada), and Larry Thomason (NASA Langley, USA).  Feel free to contact us with any questions or comments.

A number of SPARC-related sessions have been organised for 2020 EGU General Assembly in Vienna, 3-8 may 2020 (abstract submission deadline: 15 January 2020). The following is a non-exhaustive list:

— Please let the SPARC Office know about missing SAPRC-related sessions int he following list! —

AS1.9 – Subseasonal-to-Seasonal Prediction: meteorology and impacts
Primary Convener: Frederic Vitart
Co-Conveners: Francesca Di Giuseppe, Daniela Domeisen, A.G. Muñoz, Christopher White
Session link: https://meetingorganizer.copernicus.org/EGU2020/session/36782
Submit Abstract to this session

AS1.17 – Asian Monsoon dynamics and Atmospheric Composition
Primary Convener: Federico Fierli
Co-Conveners: B. Adhikary, Silvia Bucci, Fred Stroh
Submit Abstract to this session

AS1.18 – Stratospheric Dynamics
Primary Convener: Thomas Reichler
Co-Conveners: Blanca AyarzagüenaECS, Bo Christiansen, Seok-Woo Son
Submit Abstract to this session

AS3.2 – Atmospheric composition variability and trends
Primary Convener: Oksana Tarasova
Co-Conveners: Pedro Jimenez-Guerrero, Euan Nisbet, Andrea Pozzer
Submit Abstract to this session

AS3.3 – Middle atmosphere composition and feedbacks in a changing climate
Primary Convener: Gabriel Chiodo
Co-Conveners: William Ball, Mohamadou Diallo
Submit Abstract to this session

AS3.5 – Dynamics and chemistry of the upper troposphere and stratosphere
Primary Convener: Daniel Kunkel
Co-Conveners: Marta Abalos, Thomas Birner, Harald Boenisch, Felix Ploeger
Submit Abstract to this session

AS3.24 – Dynamics and chemistry of the upper troposphere and stratosphere
Primary Convener: Farahnaz Khosrawi
Co-Conveners: Hideaki Nakajima, Michael Pitts, Ines Tritscher
Submit Abstract to this session

AS4.29/ITS2.13 – Characterizing, understanding, predicting the radiative effects of major volcanic eruptions and their impacts on climate and societies
Primary Convener: Myriam Khodri
Co-Conveners: Claudia Timmreck, Davide Zanchettin, Graham Mann, Matthew Toohey
Submit Abstract to this session

CL4.11 – Dynamics of the atmospheric circulation in past, present and future climates
Primary Convener: Michael Byrne
Co-Conveners: Thomas Birner, Nicholas Lutsko, Max Popp, Talia Tamarin
Session link: https://meetingorganizer.copernicus.org/EGU2020/session/36770
Submit Abstract to this session

OS4.3 – Internal Gravity Waves
Primary Convener: Alvaro de la Camara
Co-Conveners: Ulrich Achatz, Riwal Plougonven, Chantal Staquet, Claudia Stephan
Submit Abstract to this session

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

User Needs for Weather and Climate Information: 2019 NCEI Users’ Conference. By M.J. Brewer et al. in the Bulletin of the American meteorological Society.

Ozone Transport‐Radiation Feedbacks in the Tropical Tropopause Layer. By E.J. Charlesworth, T. Birner, and J.R. Albers in the Geophysical Research Letters.

Enhanced extended‐range Predictability of the 2018 late‐winter Eurasian Cold Spell due to the Stratosphere. By L.-A. Kautz et al. in the Quarterly Journal of the Royal Meteorological Society.

Recent Progress and Future Prospects of Sub-Seasonal and Seasonal Climate Predictions. By Y.-M. Min et al. in the Bulletin of the American meteorological Society.

Oblique Gravity Wave Propagation during Sudden Stratospheric Warmings. By C.C. Stephan et al. in the Journal of Geophysical Research: Atmospheres.

Reflection of nonlinear mountain waves by critical levels: behaviour of the reflection coefficient. By M.A.C. Teixeira, J.L. Argain, and X. Xu in the Quarterly Journal of the Royal Meteorological Society.

A 16-year dataset (2000–2015) of high-resolution (3 h, 10 km) global surface solar radiation. By W. Tang et al. in Earth System Science Data.

What can we learn about orographic drag parametrization from high‐resolution models? A case study over the Rocky mountains. By S.B. Vosper et al. in the Quarterly Journal of the Royal Meteorological Society.

Warming reduces predictability. By N. Yuan and Z. Lu in nature climate change.

Discussion papers – open for comment:

Early instrumental meteorological observations in Switzerland: 1708–1873. By Y. Brugnara et al. in Earth System Science Data.

LIMS observations of lower stratospheric ozone in the southern polar springtime of 1978. By E. Remsberg et al. in Atmospheric Chemistry and Physics.

Small-scale variability of stratospheric ozone during the SSW 2018/2019 observed at Ny-Ålesund, Svalbard. By F. Schranz et al. in Atmospheric Chemistry and Physics.

The 5th ICOS Summer School “Challenges in measurements of greenhouse gases and their interpretation” will again be held in 2020 at Hyytiälä field station in Finland and will take place from 6 May until 15 May, 2020. The school is co-sponsored by the EU project RINGO, ICOS ERIC, ICOS Carbon Portal and ICOS Finland.

The school will be organized in three sections:
•Ecosystem fluxes and measurements
•Atmospheric composition and measurements (in-situ and remote sensing)
•Modeling of the global climate, carbon cycle, atmospheric transport and chemistry

The last two sections will each include a practical session.

Confirmed lecturers include: Christoph Gerbig, Martin Heimann, Sander Houweling, Maarten Krol, Wouter Peters and Timo Vesala.

Costs and funding:

Most of the costs (accommodation, catering, organization and lectures) will be covered from RINGO and ICOS Finland and ICOS ERIC funds. Participants will have to arrange their own travel to/from Helsinki, Finland.

Who can participate:

The school is mainly oriented to PhD students, but a number of PostDocs and master students preparing to start a Doctorate will be accepted. We especially encourage students from ICOS non-member European states to apply, but application is open to other applicants as well.

The scope of the Summer School is of course closely related to the (European) research infrastructure ICOS and the RINGO project. Completion of this Summer School is foreseen to deliver you 7 ECTS credit points (exact number might change).

How to apply:

The application deadline is 10 January 2020. The selection committee will select up to 35 candidates. An application will require you to upload a short CV (max 2 pages), a motivation letter and a recommendation letter from your supervisor, to also make sure that your travel costs are covered. The selection committee will evaluate all applications and the result will be communicated to all applicants at 31 January 2020.
APPLY HERE (https://www.icos-cp.eu/SS2020application)

Find more information on the ICOS Summer School 2020 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):

Reduction in surface climate change achieved by the 1987 Montreal Protocol. By R. Goyal et al. in the Environmental Research Letters.

The scientific challenge of understanding and estimating climate change. By T. Palmer and B. Stevens in the Proceedings of the National Academy of Sciences.

Tropical climate variability in the Community Earth System Model: Data Assimilation Research Testbed. By J. Eliashiv, A.C. Subramanian, and A.J. Miller in Climate Dynamics.

Potential problems measuring climate sensitivity from the historical record. By A. Dessler in the Journal of the Climate.

Evaluating the performance of past climate model projections. By Z. Hausfather et al. in the Geophysical Research Letters.
– – See also: nature News article at: https://www.sciencemag.org/news/2019/12/even-50-year-old-climate-models-correctly-predicted-global-warming

Stratospheric Sulfate Aerosol Geoengineering Could Alter the High‐Latitude Seasonal Cycle. By J. Jiang et al. in the Geophysical Research Letters.

The Western Tibetan Vortex as an Emergent Feature of Near‐Surface Temperature Variations. By R.J. de Kok and W.W. Immerzeel in the Geophysical Research Letters.

Seasonal evolution of the effects of the El Niño–Southern Oscillation on lower stratospheric water vapor: Delayed effects in late winter and early spring. By Y. Liao, Q. Chen, and X. Zhou in Earth and Planetary Physics.

A Cautionary Note on the Long‐term Trend in Activity of the Madden‐Julian Oscillation During the Past Decades. By M. Lyu, X. Jiang, and Z. Wu in the Geophysical Research Letters.

Building long homogeneous temperature series across Europe: a new approach for the blending of neighboring series. By A.A. Squintu et al. in the Journal of Applied Meteorology and Climatology.

Discussion papers – open for comment:

Reaching 1.5 °C and 2.0 °C global surface temperature targets using stratospheric aerosol geoengineering. By S. Tilmes et al. in Earth System Dynamics.

Download announcement
Find meeting webpage

Dear friends and colleagues,

On behalf of the International Ozone Commission (IO3C) and the Organizing Committee, we cordially invite you to attend the next Quadrennial Ozone Symposium (QOS), which will be held in Seoul, Korea from 6 to 10 October 2020. The symposium will be hosted at the Yonsei University at the center of Seoul Metropolitan City, Korea.

QOS 2020 will be an exciting international event for presenting and discussing recent research achievements and developments on ozone and related topics. Recently, a variety of new developments have taken place on all facets of atmospheric ozone, including its observation and impact on human health and ecosystems. Internationally renowned scientists, young scientists, and students will have a unique opportunity to present and discuss scientific issues, exchange ideas and establish collaborations.

Seoul offers excellent opportunities for a very attractive Symposium. It is a modern city with over 600 years of history as the capital of Korea. It offers many cultural opportunities in the metropolitan area and in the suburbs. You can meet old history of Chosun Dynasty and very popular modern K-pop. The local cuisine reflects the influences of the city’s history and diversity. Enjoy the local gastronomy at the numerous small places. Seoul is easily accessible by direct flights from many cities worldwide. Hotel prices are very competitive for all categories.

The weather in October is quite pleasant, with an average temperature of 13 ºC and precipitation probability of ~10%.

Sincerely,

QOS 2020 Local Organizing Committee

Important dates

Deadline for abstract submission (April 15th 2020)
Application for young scientist/students’ support (May 1-15th 2020)
Notification of student support (June 30th 2020)
Selection of oral/poster presentation (May 31st 2020)
Notification of oral/poster presentations (June 30th 2020)
Final program (July 31st 2020)
Deadline for Pre-registration (Aug 31st 2020)

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

On the impact of future climate change on tropopause folds and tropospheric ozone. By D. Akritidis, A. Pozzer, and P. Zanis in Atmospheric Chemistry and Physics.

Viewing Forced Climate Patterns Through an AI Lens. By E.A. Barnes et al. in the Geophysical Research Letters.

Assessing the impact of observations in a multi‐year Reanalysis. By F.L.R. Diniz and R. Todling in the Quarterly Journal of the Royal Meteorological Society.

Towards a more integrated role for early career researchers in the IPCC process. By C. Gulizia et al. in Climatic Change.

Need for mountain weather stations climbs. By D.S. Hik and S.N. Williamson in Science Letters.

The impact of dropsonde and extra radiosonde observations during NAWDEX in autumn 2016. By M. Schindler et al. in the Monthly Weather Review.

Discussion papers – open for comments:

Influence of Asian Summer Monsoon Anticyclone on the Trace gases and Aerosols over Indian region. By G. Basha et al. in Atmospheric  Chemistry and Physics.

ESMValTool v2.0 – Extended set of large-scale diagnostics for quasi-operational and comprehensive evaluation of Earth system models in CMIP. By V. Eyring et al. in Geoscientific Model Development.

Consistency and structural uncertainty of multi-mission GPS radio occultation records. By A. Steiner et al. in Atmospheric Measurement Techniques.

On the interconnections among major climate modes and their common driving factors. By X. Pan et al. in Earth System Dynamics.