The 16th IGAC Science Conference (IGAC2020) will take place in Manchaster from 14th to 18th September 2020.

The IGAC science conferences are run biannually and attract approximately 600 international scientists, industry leaders, and early career researchers from around the world and includes many leading funding agencies.

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

Tropical and mid-latitude teleconnections interacting with the Indian summer monsoon rainfall: a theory-guided causal effect network approach. By G. Di Capua et al. in Earth System Dynamics.

Analysis of the middle atmospheric ozone using SABER observations: a study over mid-latitudes in the northern and southern hemispheres. By V. Joshi et al. in Climate Dynamics.

Regional to Global Evolution of Impacts of Parameterized Mountain Wave Drag in the Lower Stratosphere. By C.G. Kruse in the Journal of the Climate.

A history of the global carbon budget. By B. Lahn in WIRES Climate Change.

Spontaneous inertia‐gravity wave emission from a nonlinear critical layer in the stratosphere. By I. Polichtchouk and R.K. Scott in the Quarterly Journal of the Royal Meteorological Society.

Predicting the Downward and Surface Influence of the February 2018 and January 2019 Sudden Stratospheric Warming events in Subseasonal to Seasonal (S2S) Models. By J. Rao, C.I. Garfinkel and I.P. White in the Journal of Geophysical Research: Atmospheres.

The UK Environmental Change Network datasets – integrated and co-located data for long-term environmental research (1993–2015). By S. Rennie et al. in Earth System Science Data.

Response of the quasi‐biennial oscillation to a warming climate in global climate models. By J.H. Richter et al. in the Quarterly Journal of the Royal Meteorological Society.

Discussion papers – open for comment:

A Raman Lidar Tropospheric Water Vapour Climatology and Height-Resolved Trend Analysis over Payerne Switzerland. By S. Hicks-Jalali et al. in Atmospheric Chemistry and Physics.

Propagation of gravity waves and its effects on pseudomomentum flux in a sudden stratospheric warming event. By I.-S. Song et al. in Atmospheric Chemistry and Physics.

A tropospheric pathway of the stratospheric quasi-biennial oscillation (QBO) impact on the boreal winter polar vortex. By K. Yamazaki et al. in Atmospheric Chemistry and Physics.

The abstract submission to the 2020 Quadriennial Ozone Symposium is now open. Submission is possible through the meeting webpage

The Symposium will take place 4 October – 10 October in Seoul, 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.

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Find meeting webpage

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).

The impact of continuing CFC‐11 emissions on stratospheric ozone. By E.L.Fleming et al. in the Journal of Geophysical Research: Atmospheres.

Surface temperature response to the major volcanic eruptions in multiple reanalysis data sets. By M. Fujiwara, P. Martineau, and J.S. Wright in Atmospheric Chemistry and Physics.

Importance of orography for Greenland cloud and melt response to atmospheric blocking. By L.C. Hahn et al. in the Journal of the Climate.

Attribution of Chemistry-Climate Model Initiative (CCMI) ozone radiative flux bias from satellites. By L. Kuai et al. in Atmospheric Chemistry and Physics.

Windows of Opportunity for Skillful Forecasts Subseasonal to Seasonal and Beyond. By A. Mariotti et al. in the Bulletin of the American Meteorological Society.

Why are stratospheric sudden warmings sudden (and intermittent)? By N. Nakamura, J. Falk, and S. Lubis in the Journal of the Atmospheric  Sciences.

The influence of the stratospheric Quasi-Biennial Oscillation on trace gas levels at the Earth’s surface. By E.A. Ray et al. in nature geoscience.

La Niña’s Diminishing Fingerprint on the Central Indian Summer Monsoon. By D. Samanta et al. in the Geophysical Research Letters.

Trends in Upper Tropospheric Humidity: Expansion of the Subtropical Dry Zones? By M. Tivig et al. in the Journal of the Climate.

How tropical convection couples high moist static energy over land and ocean. By Y. zhang and S. Fueglistaler 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).

Pacific modulation of the North Atlantic storm track response to sudden stratospheric warming events. By H. Afargan‐Gerstman and D.I.V. Domeisen in the Geophysical Research Letters.

Statistical downscaling of water vapour satellite measurements from profiles of tropical ice clouds. By G. Carella et al. in Earth System Science Data.

Contributions of Convective and Orographic Gravity Waves to the Brewer-Dobson Circulation Estimated from NCEP CFSR. By M.-J. Kang, H.-Y. Chun and B.-G. Song in the Journal of the Atmospheric Sciences.

Is the subtropical jet shifting poleward? By P. Maher et al. in Climate Dynamics.

The role of the SO2 radiative effect in sustaining the volcanic winter and soothing the Toba impact on climate. By S. Osipov et al. in the Journal of Geophysical Research: Atmospheres.

Climate change now detectable from any single day of weather at global scale. By S. Sippel et al. in nature climate change.

Very high stratospheric influence observed in the free troposphere over the northern Alps – just a local phenomenon? By T. Trickl et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment:

Deep convective influence on the UTLS composition in the Asian Monsoon Anticyclone region: 2017 StratoClim campaign results. By S. Bucci et al. in Atmospheric Chemistry and Physics.

Intercomparison of wind observations from ESA’s satellite mission Aeolus and the ALADIN Airborne Demonstrator. By O. Lux et al. in Atmospheric Measurement Techniques.

First validation of Aeolus wind observations by airborne Doppler Wind Lidar measurements. By B. Witschas et al. in Atmospheric Measurement Techniques.

WCRP SPARC Austral Summer School in Argentina
Dynamics and chemistry of atmospheric variability and change
17-28 February 2020

School of Exact and Natural Sciences, University of Buenos
Aires, Argentina.

[+++ Unfortunately, Summer School had to be cancelled. We hope for the organization of the course in the future. [+++]

Download Announcement

The course is mainly intended for early career
scientists and PhD students working in areas of Atmospheric Physics
and Dynamics, Climatology, Oceanography, Physics, and Chemistry,
from South America institutions. Participants should have an
adequate working knowledge of English. Participants are required to
take part in all aspects of this activity for its entire duration. There is
no registration fee.

Course Characteristics

The course will consist of two weeks of
lectures, seminars, discussion and practical exercises with toy models.
Main topics are: Stratospheric dynamics and transport, Stratospheric
chemistry and the ozone hole, Stratosphere-troposphere dynamical
coupling, Stratosphere-troposphere radiative and chemical coupling,
Storm track dynamics, Tropospheric ozone and air pollution,
Scenario-driven approach to climate change, Storyline approach to
climate change.

Lecturer

Michaela Hegglin and Ted Shepherd, University of
Reading, UK.

Local Organizer

Carolina Vera, School of Exact and Natural
Sciences, University of Buenos Aires, Argentina.

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