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SPARC eNews Bulletin November 2020.
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SPARC eNews Bulletin November 2020

 News and Announcements
 

First session of the 28th SPARC SSG meeting
 

On Wednesday, 18 November, the first session of the 28th SPARC SSG meeting was held online. In a three-hour discussion session the SSG members and Activity leads discussed the future direction of SPARC. The discussion was based on an interim report from the SPARC Strategy Task team, led by Amanda Maycock, that has worked to review SPARC’s current structure and discuss important science topics to focus on in the future. Ideas, recommendations, and open issues are taken forward to the WCRP JSC by the co-chairs in this week’s extraordinary session of the JSC.
 
Discussions with the SPARC community will continue via email or further online meetings. A more detailed report on the SSG session will be published in the January SPARC newsletter.
 
The online SSG meeting will have another session reserved for activity reporting and SSG business. This session is planned to take place in January or February.
 

 

SPARC General Assembly 2022
 

We are starting to plan for the SPARC General Assembly which is due to be held in 2022. In line with the SPARC goal to reduce our climate footprint, we want to organise it in as environmentally friendly way as possible while meeting the aim of a General Assembly to be a community-building event. We are therefore looking for innovative ways* to hold the conference. Andrew Charlton-Perez has kindly agreed to chair the planning group discussing ways in which this could be achieved.

We want to recruit volunteers interested in brainstorming ideas for the SPARC GA. Please contact the SPARC Office or Andrew, if you would like to contribute or pass this on to anyone you think might be interested. We hope that scientists with varied backgrounds and levels of experience will contribute. We are looking for outline proposals to be prepared this autumn.

The experience of holding on-line conferences is being greatly accelerated as part of the response to the Covid-19 pandemic. We want to learn all we can from this experience. If you have experienced or are aware of examples of holding on-line meetings, please do contact us with what you think worked well, did not work, and the lessons learned. Please visit the SPARC webpage to let us know about your experience.


* e.g as described in SPARC newsletter No. 54 or by
Klöwer, M. et al., 2020: An analysis of ways to decarbonize conference travel after COVID-19, nature 583

 
SPARC carbon footprint
 
Members of the SPARC community have discussed the carbon footprint of their research activities. One of the elephants in that room certainly is meetings and workshops and in particular, the travel carbon emissions of the meeting participants.

A small group that participated in the SPARC workshop in Madrid have written down their thoughts on how the community could reduce its ecological footprint. These thoughts should be seen as a starting point for discussions, but also for taking action in the SPARC community and beyond. The article particularly addresses workshop organisers and provides some ideas what they should consider when setting up their meeting to reduce the carbon footprint. - An outline of actions of WCRP as a whole will be printed in the upcoming SPARC newsletter.

We look forward to receiving more ideas from the community and insights from future workshop experi-ences. This shall lead to a binding guideline for setting up SPARC meetings in the future.
As a start to estimate our own footprint, we ask those of you, who have organsied a SPARC (-related) meeting or workshop in the past 2-3 years, to fill in a short questionnaire to estimate the carbon footprint of travel for those meetings.

Find questionnaire

Obviously, this cannot be an exact science, but it would really be helpful, if you take the time to fill in the attached questionnaire for any SPARC workshop/meeting/training school/… you have organised in the recent past (one questionnaire per meeting).
 
Please note, that this is voluntary, and the purpose is to get a broad idea of our meeting carbon footprint. We know, that any numbers provided cannot not be precise; a sound estimate is fine. We acknowledge that SPARC workshops and meetings vary in size, time, and location.
 

As the ongoingpandemic of Covid-19 hits every part of the world, we want to continue to

1. Offer our help. Please don’t hesitate to contact the SPARC office about things you would like assistance with, or want to share with the community.

2. Ask how you to share your experience with online meeting formats you have seen in the past months?

3. Hear what you think we could do to help your SPARC work.
 
We are looking forward to hearing about your experience – we will do our best to help you keep up your great work. It will be valuable in helping SPARC plan its future activities as we move to an era with reduced carbon footprint.
 
Stay healthy!
The SPARC co-chairs and office team

The 'new' WCRP will soft launch in 2021

In December 2019, WCRP launched its new Strategic Plan. Throughout this year, the community has been discussing how the plan can be implemented to deliver a new WCRP that is ready to tackle the challenges and take advantage of the opportunities of climate science in the next decade. This will involve simplifying the WCRP structure and launching a number of ambitious new activities. The details of a 'soft implementation' of the new WCRP will be decided at the Extraordinary Session of the WCRP Joint Scientific Committee (30 Nov — 3 Dec 2020). Find out more about what to expect here:
 


WCRP welcomes two new JSC members

WCRP is happy to welcome two new JSC members. Both Maria Ivanova and Roberto Sánchez Rodríguez come from a social sciences background and will bring unique and important perspectives to WCRP.

Maria Ivanova is an Associate Professor of Global Governance and Director of the Center for Governance and Sustainability at the John W McCormack Graduate School of Policy and Global Studies at the University of Massachusetts Boston, US. To know more about Maria Ivanova, click here.

 

Roberto Sánchez Rodríguez is a Professor at the Department of Urban and Environmental Studies at El Colegio de la Frontera Norte, Mexico. To know more about Roberto Sánchez Rodríguez, click here.
 


Dr. Mike Sparrow is appointed as Head of WCRP Secretariat

Dr. MMike Sparrowike Sparrow has been appointed as Head of the WCRP Secretariat and Head of the World Climate Research Division, Science and Innovation Department, WMO.

He says, "This is an exciting and challenging time for WCRP. The next few years will bring challenges that can only be addressed through worldwide cooperation and coordination on a number of important issues. Reliable and informative climate science is needed more than ever and WCRP is crucial to this endeavor. I look forward to working with WCRP's Joint Scientific Committee, our co-sponsors, and the many dedicated scientists that are the foundation of our work."

Congratulations to Mike on his appointment.

 

Two new job openings are available in the WCRP Secretariat:

  • Science Officer (P3) : To know more, click here
    Deadline for application : 23 December 2020
  • Science and Communications Officer (P3): To know more, click here
    Deadline for application: 22 December 2020

For questions or additional queries please contact msparrow@wmo.int



New data set available: solar forcing recommendations for the planned CCMI experiments in support of the 2022 Scientific Assessment of Ozone Depletion
 

SOLARIS-HEPPA generated and made available the solar forcing recommendations for the planned CCMI experiments in support of the 2022 Scientific Assessment of Ozone Depletion (CCMI-2020).

The solar forcing data is an extension of the historical CMIP6 forcing dataset (extended until end of 2019) and can be found here: https://solarisheppa.geomar.de/solarisheppa/ccmi2022
 



Registration open: EUMETSAT online short courses on weather, oceanography, air quality and climate
 

This September the training team at EUMETSAT has kicked off a series of online short courses that will cover weather, oceanography, air quality and climate. Short courses will be offered September through December.

The short courses are open to all interested participants and address a wide range of attendees, from service providers to young (and less young) scientists and forecasters.

More information about the online series and the course schedule is available on Moodle EXT, the EUMETSAT training platform at https://training.eumetsat.int/course/index.php?categoryid=97 EXT. Here participants can find information about the content and format of the sessions, and they can already register their interest EXT in the courses.

Each short course will offer a webinar with a presentation, a demonstration of data discovery and data application. Some courses will also include a follow-up self-paced phase where participants will have the opportunity to further explore the data and discuss it with experts.



Announcement: Special Sections in GRL: “The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences

Dear Colleagues,

We would like to draw your attention to a new Special Section in Geophysical Research Letters and Journal of Geophysical Research: Atmospheres entitled “The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences”. The call for papers for this Special Section and submission information are given below.

We encourage you to consider submitting a paper for this special issue, and to communicate / coordinate with us and your colleagues regarding your plans. We are expecting both quick short papers for GRL and longer more detailed papers that may take more time to prepare (e.g., involving modeling studies or postseason impacts) for JGR and will thus hold the Special Section open for submissions through calendar year 2021.

Please feel free to contact any or all of us with any inquiries or plans related to this Special Section.

Cheers,
Gloria Manney,
Amy Butler,
Jens-Uwe Grooß,
Krzysztof Wargan,
(Organizers)

Find the call for papers on the JGR webpage

Find the call for papers on the GRL webpage
 


New meeting dates: QBO@60 re-scheduled for 5-9 July 2021
 

QBO@60 – Celebrating 60 years of discovery within the tropical stratosphere – will gather together international researchers to celebrate 60 years of advances since the discovery of the Quasi-Biennial Oscillation. The event will hold overview presentations of key early observations and theoretical developments from eminent researchers working in the field.

The workshop was originally scheduled for July 2020, and is now postponed to the week of 5-9 July 2021 at the Met Office, Exeter, though of course that will depend on any developments in relation to the Coronavirus (COVID-19).

Find more information on the workshop including latest updats on the meeting schedule.


Announcement: SPARC Gravity Wave Symposium
27 September—1 October 2021

Find meeting webpage

We cordially invite you to save the dates on your calendar for the 2021 SPARC Gravity Wave Symposium now scheduled to be the week of 27 September—1 October 2021 starting on the morning of September 27th and departing after lunch Friday October 1st on the Westend (downtown) campus of the Goethe University Frankfurt in Frankfurt/Main, Germany: https://www.goethe-university-frankfurt.de

This SPARC symposium is a continuation of a series of successful similar GW meetings lead-organized by Kevin Hamilton, Joan Alexander, Kaoru Sato, Fuqing Zhang and others over the past couple of decades. The tentative title of the next year’s symposium will be “Atmospheric gravity waves: towards a next-generation representation in weather and climate models”. Research on all aspects of atmospheric gravity waves, including newly emerging topics, will be welcomed but some particular emphases will be given to measurements, simulations, and numerical and theoretical developments, especially those confronting, challenging, and advancing the present-day treatment of gravity waves in atmospheric models.

Further logistics will be forthcoming but at this point we would like you to save the dates, and also please preregister on the web site below which will guide us in negotiating how many rooms and seats are needed for the symposium. We understand at this point your response will not be binding. The web-site address is:

https://express.converia.de/frontend/index.php?sub=529

Please also feel free to forward this announcement to whoever might be interested. Your help in this regard would be appreciated. We also apologize for the case you are receiving the announcement several times.

Co-conveners: Ulrich Achatz, Joan Alexander, and Kaoru Sato
Meeting secretary: Aurelia Müller Aurelia.Mueller@iau.uni-frankfurt.de

We look forward to your participation.

Best regards, and stay healthy,

Ulrich, Joan, and Kaoru



Quadriennial Ozone Symposium - postponed to 3 - 9 October 2021

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.

Find meeting webpage
 



Announcement: 2nd Climate Observation Conference

12–14 October 2021, Darmstadt, Ger­many

The Global Climate Observing System (GCOS), with the World Climate Research Programme (WCRP), and supported by EUMETSAT will be holding a conference that aims to assess how well the current global climate observing system supports current and near-term user needs for climate information. In particular the meeting will examine how well observations of the global Earth cycles (the global energy balance, global water and carbon cycles, and explaining changing conditions of the biosphere) support users’ needs for climate data. The outputs will provide inputs into the next GCOS implementation plan which will make recommendations to meteorological networks, major observing systems and satellite agencies and also it will be presented to the UNFCCC in 2022 as a contribution towards the UNFCCC’s Global Stocktake.

This conference follows on from the first climate observations conference, Global Climate Observation: The Road to The Future held on 2–4 March 2016 in Amsterdam. Sustained observations of the global climate system are essential for understanding, predicting, mitigating and adapting to climate change. The progress in understanding and attributing climate change have been largely based on climate observations. In order to this progress, it is vital to make further progress towards achieving a fully implemented, sustainable, global observing system for climate.

An organising committee is being setup under the leadership of Prof. A.J. (Han) Dolman, chair of the Scientific Steering Committee of GCOS which will issue an invitation for abstracts in January 2021.

Please mark your calendars now for this important conference from 12–14 October 2021. Depending of the evolution of the COVID-19 pandemic the meeting may be held partly virtual. The registration page for the conference will open in February 2021 and more detail on the programme will be available at that time. For more details please visit our meeting website: https://www.eventsforce.net/gcos-coc

Please also feel free to pass this announcement on to colleagues and contacts who would also be interested in participating.

In the meantime, if you have any questions related to the conference, do not hesitate to contact us via email: gcos-coc@eumetsat.int.

Further details about GCOS can be found at https://gcos.wmo.int and WCRP at https://www.wcrp-climate.org

Information about the FIRST climate observations conference is available at http://www.gcos-science.org

 

 

 

CLIVAR Exchanges Special Issue on India’s Monsoon Mission

Monsoons have always been a focus of great interest to WCRP, and this was further enhanced with the efforts of its core projects CLIVAR and GEWEX under a joint Monsoons Panel.

Cover of the Special IssueRecognizing the broader interest of the Monsoon Mission activities to the WCRP community, the CLIVAR/GEWEX Monsoons Panel has coordinated a special issue of CLIVAR Exchanges on India’s Monsoon Mission, with Dr M.N. Rajeevan as the Guest Editor.  This issue showcases 12 articles highlighting the results achieved so far under the Monsoon Mission.

 
We sadly note the loss of our colleague and friend Yuri Koshelkov, who  died in Washington DC in September 2020 at the age of 83 years.

 

Yuri had been Project scientist at the SPARC Office from 1994 to 2003, when the office was in Verrières-le-Buisson in France. He was responsible for the newsletter and edited 19 of them. Yuri ’s carreer developed at the Central Aerological Observatory in Moscow where he used rockets from all over the world to study the upper atmosphere. Yuri was a very eclectic and curious person and  an enthusiastic traveler all along his life and he was lucky that his carrer offered him such a  possibility.

Marie-Llíse Chanin,  former SPARC co-chair

 SPARC publications
Most-recent edition of the SPARC newsletter available online:

SPARC, 2020: SPARC Newsletter No. 55, July 2020, 31 pp., available at http://www.sparc-climate.org/publications/newsletter/
SPARC Report No. 9

SPARC/IO3C/GAW Report on Long-term Ozone Trends and Uncertainties in the Stratosphere

edited by the SPARC LOTUS activity team.
Available at: https://www.sparc-climate.org/publications/sparc-reports/sparc-report-no-9/

Book: "Sub-Seasonal to Seasonal Prediction"
Chapter 11 - Sub-seasonal Predictability and the Stratosphere
Journal Special Issues
 

Chemistry-Climate Modelling Initiative - Joint Special Issue in ACP/AMT/ESSD/GMT
The collection already contains 34 published papers. More are accepted and under revision.

SPARC Reanalysis Intercomparison Project - Special Issue in ACP
The collection already contains 42 published papers. More are accepted and under revision. It is open for submissions until 31 December 2020 (dadline extended).

StratoClim stratospheric and upper tropospheric processes for better climate predictions in ACP
The collection already contains 22 published papers. More are accepted and under revision. It is open for submissions until 01 March 2021.

Water Vapour Intercomparison II (WAVAS-II) - Joint Special Issue in ACP/AMT/ESSD
The collection contains 15 published papers. It is open for submissions until 30 July 2021.

Towards Unified Error Repoting (TUNER) - Special Issue in AMT
The collection already contains 6 published papers. More are accepted and under revision. It is open for submissions until 31 October2021.

The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences in JGR:Atmosphers/GRL
The collection already contains 8 published papers. It is open for submissions until 31 December 2021.


Additional collections:

There is an onlince collection within the Quarterly Journal of the Royal Meteorological Society on the QBO Modelling Intercomparison. We suggest groups who want to submit a paper to this Online Collection also contact the QBOi Coordinators (see activity webpage).
Early Career Opportunities
SPARC encourages early career scientists to join the Young Earth System Scientists (YESS) community. YESS unifies early career researchers in an influential network and communication platform to promote local and global exchange across multiple disciplines related to Earth system sciences. Join the YESS community by going to www.yess-community.org

SPARC Meetings
 


SPARC SSG meeting 2nd session
(Activity Reporting and other SSG business)
online (invitation only)
January or February 2020
---------------------------

Gravity Waves ISSI Team meeting
Berne, Switzerland
scheduled: 190-23 October 2020 - new date: 2021
---------------------------

11th International Workshop on Long-Term Changes and Trends in the Atmosphere (TRENDS 2020)
FMI, Helsinki, Finland
Find meeting website
scheduled: 25–29 May 2020 - new date: May 2021
---------------------------

8th International HEPPA-SOLARIS Meeting
Birkeland Centre for Space Science, Allégaten 55, 5007 Bergen, Norwegen
Find meeting webpage
scheduled: 8–12 June 2020 - new date: June 2021
---------------------------

QBO@60 – Celebrating 60 years of discovery within the tropical stratosphere
5-9 July 2021 (new date!)
Met Office, Exeter, UK
Find meeting website
---------------------------

SPARC Gravity Wave Symposium
27 September - 1 October 2021
Goethe Universität Frankfurt
---------------------------

Quadrennial Ozone Symposium 2020
3 - 9 October 2021 (new date!)
Yonsei University, Seoul, South Korea
Find meeting webpage
---------------------------

3rd International Workshop on Stratospheric Sulfur and its Role in Climate (SSiRC)
Leeds , UK
Find meeting website
New dates: TBA (early 2021)






Find all SPARC meetings

Please keep the Office updated about any change in plans for your already scheduled workshops and conferences. We are happy to assist with setting up alternative meetings, and would like to coordinate new meeting dates to reduce overlaps between meetings.

SPARC-related Meetings
 
 
Extraordinary session of the WCRP Joint Scientific Steering Committee (JSC-41B)
30 November - 4 December 2020
online, invitation only

AGU Fall Meeting
7 - 12 December 2020
     SPARC - related Sessions:

     A035 - Atypical polar stratospheric winters in 2019 and 2020: causes and consequences
     A092 - Progress in Reanalysis: Development, Evaluation, and Application
     A093 - Recent Findings from Spaceborne Observations of the Middle Atmosphere
 
 
43rd Scientific Assembly of the Committee on Space Research (COSPAR) and Associated Events
28 January - 4 February 2021

Place: Sydney, Australia
https://www.cospar-assembly.org (scientific program)
http://www.cospar2020.org (registration, accommodation, etc.)
Contact: COSPAR Secretariat cospar@cosparhq.cnes.fr

ECRA General Assembly
10 - 11 March 2021
Brussels, Belgium

Find more SPARC-related meetings

Find more meetings organised by the WCRP community
Science updates

A selection of recently published science articles of interest to the SPARC community (since last eNews; a SPARC Office choice).


 

Sensitivity of the Southern Hemisphere circumpolar jet response to Antarctic ozone depletion: prescribed versus interactive chemistry. By S. Haase et al. in Atmospheric Cemistry and Physics.

Skewness of Temperature Data Implies an Abrupt Change in the Climate System Between 1985 and 1991. By A. Skelton, N. Kirchner, and I. Kockum in the Geophysical Research Letters.

Zonal asymmetry of the QBO temperature signal in the tropical tropopause region. By S. Tegtmeier et al. in the Geophysical Research Letters.

Increase in Lower Stratospheric Water Vapor in the Past 100 Years Related to Tropical Atlantic Warming. By F. Xie et al. in the Geophysical Research Letters.

Shipborne lidar measurements showing the progression of the tropical reservoir of volcanic aerosol after the June 1991 Pinatubo eruption. By J.-C. Antuña-Marrero et al. in Earth System Science Data.

Structure, dynamics, and trace gases variability within the Asian summer monsoon anticyclone in extreme El Niño of 2015–16. By S. Ravindra Babu et al. in Atmospheric Chemistry and Physics.

Evaluating the simulated radiative forcings, aerosol properties, and stratospheric warmings from the 1963 Mt Agung, 1982 El Chichón, and 1991 Mt Pinatubo volcanic aerosol clouds. By S.S. Dohmse et al. in Atmospheric Chemistry and Physics.

Is solar geoengineering ungovernable? A critical assessment of governance challenges identified by the Intergovernmental Panel on Climate Change. By J.L. Reynolds in WIREs Climate Change.

Data Availability Principles and Practice. By A.K. Smith et al. in the Journal of the Atmospheric Sciences.

The response of stratospheric water vapor to climate change driven by different forcing agents. By X. Wang and A.E. Dessler in Atmospheric Chemistry and Physics.

Large atmospheric waves will get stronger while small waves will get weaker by the end of the 21st century. By R. Chemke and Y. Ming in the Geophysical Research Letters.

Near‐global CFC‐11 Trends as Observed by Atmospheric Infrared Sounder from 2003 to 2018. By X. Chen, X. Huang, and L.L. Strow in the Journal of Geophysical research: Atmospheres.

Recommendations for future research priorities for climate modelling and climate services. By C.D. Hewitt et al. in the Bulletin of the American Meteorological Society.

Exceptionally low Arctic stratospheric ozone in spring 2020 as seen in the CAMS reanalysis. By A. Inness et al. in the Journal of Geophysical Research: Atmospheres.

Atmospheric Water Vapor Budget and its Long‐Term Trend over the Tibetan Plateau. By H. Yan et al. in the Journal of Geophysical Research: Atmospheres.

Deep-convective influence on the upper troposphere–lower stratosphere composition in the Asian monsoon anticyclone region: 2017 StratoClim campaign results. By S. Bucci et al. in Atmospheric Chemistry and Physics.

Impact of sudden stratospheric warmings on United Kingdom mortality. By A.J. Charlton-Perez, W.T.K. Huang, and S.H. Lee in the Atmospheric Science Letters.

The Global Space-based Stratospheric Aerosol Climatology (version 2.0): 1979–2018. By M. Kovukajan et al. in Earth System Science Data.

Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere. By M. Kozubek, J. Lastovicka, and P. Krizan in Atmosphere.

The Remarkably Strong Arctic Stratospheric Polar Vortex of Winter 2020: Links to Record‐Breaking Arctic Oscillation and Ozone Loss. By Z.D. Lawrence et al. in the Journal of Geophysical Research: Atmospheres.

Variability in QBO Temperature Anomalies on Annual and Decadal Timescales. By Z. Martin et al. in the Journal of the Climate.

The vertical profile of recent tropical temperature trends: Persistent model biases in the context of internal variability. By D.M. Mitchell et al. in the Environmental Research Letters.

Polar stratospheric clouds initiated by mountain waves in a global chemistry–climate model: a missing piece in fully modelling polar stratospheric ozone depletion. By A. Orr et al. in Atmospheric Chemistry and Physics.

Stratospheric Ozone in the Last Glacial Maximum. By M. Wang et al. in the Journal of Geophysical Research: Atmospheres.

Stratospheric contribution to the summertime high surface ozone events over the western united states. By X. Wang et al. in the Environmental Research Letters.

Climate change: Does international research fulfill global demands and necessities? By D. Klingelhöfer et al. in Environmental Sciences Europe.

21st century trends in mixing barriers and eddy transport in the lower stratosphere. By M. Abalos and A. De la Camara in the Geophysical Research Letters.

Impact of the eruption of Mt Pinatubo on the chemical composition of the stratosphere. By M. Kilian, S. Brinkop, and P. Jöckel in Atmospheric Chemistry and Physics.

Seasonal Forecasts of the Exceptional Northern Hemisphere Winter of 2020. By S.H. Lee et al. in the Geophysical Research Letters.

Responses of the East Asian summer monsoon to aerosol forcing in CMIP5 models: The role of upper‐tropospheric temperature change. By J. Mu and Z. Wang in the International Journal of Climatology.

Arctic Ozone Loss in March 2020 and Its Seasonal Prediction in CFSv2: A Comparative Study with the 1997 and 2011 Cases. By J. Rao and C.I. Garfinkel in the Journal of Geophysical Research: Atmospheres.

Reconciling the climate and ozone response to the 1257 CE Mount Samalas eruption. By D.C. Wade et al. in the Proceedings of the National Academy of Sciences of the United States of America.

Dependence of atmospheric transport into the Arctic on the meridional extent of the Hadley cell. By H. Yang et al. in the Geophysical Research Letters.

Climate change and trend analysis of temperature: the case of Addis Ababa, Ethiopia. By Z.A. Alemu and M.O. Dioha in Environmental Systems Research.

Characteristics of Tropopause Polar Vortices Based on Observations over the Greenland Ice Sheet. By S.M. Borg, S.M. Cavallo and D.D. Turner in the Journal of Applied Meteorology and Climatology.

Superposition of gravity waves with different propagation characteristics observed by airborne and space-borne infrared sounders. By I. Krisch et al. in Atmospheric Chemistry and Physics.

Architecting the Future of Weather Satellites. By M.W. Maier et al. in the Bulletin of the American Meteorological Society.

Projected strengthening of the extratropical surface impacts of the stratospheric Quasi‐Biennial Oscillation. By J. Rao, C.I. Garfinkel, and I.P. White in the Geophysical Research Letters.

Prepare Scientists to Engage in Science‐Policy. By E. von Schneidemesser, M. Melamed, and J. Schmale in Earth’s Future.

Modeling evidence of QBO‐MJO connection: A case study. By S.-Y. Back, J.-Y. Han, and S.-W. Son in the Geophysical Research Letters.

On the intermittency of orographic gravity wave hotspots and its importance for middle atmosphere dynamics. By A. Kuchar et al. In Weather and Climate Dynamics.

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

Reappraisal of the climate impacts of ozone‐depleting substances. By O. Morgenstern et al. in the Geophysical Research Letters.

Broadening Impact of Field Campaigns: Integrating Meteorological and Chemical Observations. By G.L. Mullendore et al. in the Bulletin of the American Meteorological Society.

On the linkage between Rossby wave phase speed, atmospheric blocking and Arctic Amplification. By J. Riboldi et al. in the Geophysical Research Letters.

Tropospheric forcing of the 2019 Antarctic sudden stratospheric warming. By X. Shen, L. Wang, and S. osprey in the Geophysical Research Letters.

Prediction of the quasi‐biennial oscillation with a multi‐model ensemble of QBO‐resolving models. By T.N. Stockdale et al. in the Quarterly Journal of the Royal Meteorological Society.

Near complete local reduction of Arctic stratospheric ozone by severe chemical loss in spring 2020. By I. Wohltmann et al. in the Geophysical Research Letters.

Climate research Foote note. By B. Wake in nature: climate change.

 

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