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SPARC eNews Bulletin July 2019.
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SPARC eNews Bulletin July 2019

We sadly note the loss of our colleague and friend Dr. Fuqing Zhang, who died Friday July 19, 2019 following a recent diagnosis of cancer.  This enormous loss to his family, friends and students and colleagues at Penn State is also felt by his many colleagues around the world.  Fuqing had many accomplishments, awards, activities, and interests, and an obituary from colleagues at Pennsylvania State University can be found >>here .

Among his many scientific interests, Fuqing was active in the field of atmospheric gravity waves, and he had been serving as co-chair of the SPARC Gravity Wave Activity since 2016.

A memorial service was held on July 24th at Koch Funeral Home in State College.  At this time, one may read and add their own condolences and memories at >>this website

Many of us not only remember Fuqing’s tireless enthusiasm and passion for science, but also his kindness and helpfulness to so many scientists young and old around the world.  We will miss him and we mourn his loss, which came much too soon.

Joan Alexander & Kaoru Sato, Gravity Wave activity co-leads
 News and Announcements

 


Message from WCRP leaders on recent developments concerning the Implementation Plan

Dear Colleagues,

The Implementation and Transition Meeting Report is now finalized and available on the WCRP website. Please note that the report reflects discussions during the 2-day meeting, but also lists the key outcomes following the 40th Session of the Joint Scientific Committee (JSC-40), in particular, the timeline and conceptual framework, to avoid confusion. The JSC-40 Report will be published in the next few weeks. You will see from the implementation timeline and milestones that the next step in the process is consolidation. This includes refinement of the science questions, conceptual framework, and of the key elements for operations, delivery, and engagement. It also includes the identification of science, funding, and infrastructure needs and partner and stakeholder consultation. In the next weeks, a number of task teams will be formed to begin this process. We will soon be in touch with more information on this opportunity.

To share our plans as widely as possible we have put together an MS PowerPoint presentation that provides information on the WCRP Strategic and Implementation Plans. Now that the Strategic Plan has been finalized, we invite you to disseminate the key details of our Plan and its implementation process.

We thank you all for your contributions to this important first step and look forward to working with you all in the coming months.

Kind regards

Detlef Stammer
Chair WCRP Joint Scientific Committee

Helen Cleugh
Vice-chair WCRP Joint Scientific Committee

Pavel Kabat
in his capacity as WCRP Director


Sessions of interest at the upcoming Fall meeting of the American Geophysical Union (AGU), December 2019

A number of SPARC-related sessions have been organised for this year’s fall AGU meeting (abstract submission deadline: 31 July 2019). The following is a non-exhaustive list:

A003 – Advances and Challenges for Subseasonal to Seasonal Prediction
Primary Convener : Harry Hendon
Conveners: Ben P Kirtman, Amy H Butler, and Duane Edward Waliser
https://agu.confex.com/agu/fm19/prelim.cgi/Session/77076

A042 – Cirrus, Chemistry and Dynamics of the Upper Troposphere and Lower Stratosphere
Primary Convener: Jessica B Smith
Conveners: Elisabeth J Moyer, Troy D Thornberry, and Thomas P Ackerman
https://agu.confex.com/agu/fm19/prelim.cgi/Session/83328

A079 – Impact of the Asian Summer Monsoon on the Composition of the Upper Troposphere and Lower Stratosphere
Primary Convener : Hans Schlager
Conveners: Martina Kraemer
https://agu.confex.com/agu/fm19/prelim.cgi/Session/82754

A104 – Observations from Stratospheric Ballooning: Research and New Concepts
Primary Convener : Robert W Carver
Convenors: Max Kamenetsky
https://agu.confex.com/agu/fm19/prelim.cgi/Session/79247

A109 – Progress in Reanalysis: Development, Evaluation and Application
Primary Convener : Jan Dominik Keller
Conveners: Michael G Bosilovich, Masatomo Fujiwara
https://agu.confex.com/agu/fm19/prelim.cgi/Session/77084

A110 – Recent findings from spaceborne observations of the middle atmosphere
Primary Convener : Nathaniel J Livesey
Conveners: D A Degenstein, Kaley A Walker
https://agu.confex.com/agu/fm19/prelim.cgi/Session/77967

A119 – Stratospheric composition change, its impact on climate and understanding of uncertainties in data records.
Primary Convener : Irina V Petropavlovskikh
Conveners: Dale F Hurst, Viktoria Sofieva
https://agu.confex.com/agu/fm19/prelim.cgi/Session/80537

A135 – Understanding the unexpected increase in CFC-11 emissions
Primary Convener : Neil Richard Peter Harris
Conveners: Sunyoung Park, Paul A. Newman
https://agu.confex.com/agu/fm19/prelim.cgi/Session/78200

 

Also note the 40-year celebration of WCRP during AGU. Find all information on Symposia, town halls, and WCRP related sessions at the

WCRP climate science week webpage


Announcement: Workshop on Stratospheric predictability and impact on the troposphere

the workshop will be held at ECMWF in Reading on 18-21 November 2019

This workshop will bring together experts to discuss and propose ways forward in representing the stratosphere in current and future numerical weather prediction models (1-50 km resolution, forecast lead times from medium-range to seasonal), and pathways by which better treatment of the stratosphere can improve predictive skill in the troposphere.

For further information and to register, please visit: https://www.ecmwf.int/en/learning/workshops/workshop-stratospheric-predictability-impact-troposphere

If you wish to attend this workshop, please complete the registration form before 31 July 2019.


Sessions of interest at the upcoming American Meteorological Society (AMS)  annual meeting in January 2020

Please note the following Symposia of the American Meteorological Society (AMS) coming up in 2020:

Contributions to both symposia have to be submitted by 1 August 2019

Susan Solomon Symposium -Ozone, Climate, and Policy: Susan’s Contributions Then and Now

This symposium aims to honor Prof. Solomon’s past achievements in and ongoing contributions to atmospheric science. Sessions will highlight the history and future of environmental policy and assessments, breakthroughs in middle atmospheric and ozone science, and provide perspectives on our changing climate—one of the greatest challenges of our time. Each of these three topics will be communicated through invited talks and solicited posters.

Call for Papers
  • Wisdom of Solomon: History & Successes in Environmental Policy
  • Ozone & the Middle Atmosphere: Past, Present and Future
  • Climate Change: The Challenge of the 21st Century
Conference Contact(s):Daniel Gilford (daniel.gilford@rutgers.edu) & A.R. Ravishankara (a.r.ravishankara@colostate.edu)

Find webpage

Middle Atmosphere One-Day Symposium

Call for Papers
  • Middle Atmosphere – Posters Only
Conference Contact(s):  Rei Ueyama (rei.ueyama@nasa.gov), Sean Davis (sean.m.davis@noaa.gov)

Find Webpage


 

International interdisciplinary PhD and Post-Doc summer research school

Observing and Modelling the Arctic Environment – Climate processes, prediction and projection

at

Nansen International Environmental and Remote Sensing Center (NIERSC), St. Petersburg, Russia

8th – 13th September 2019

Sponsored by the Research Council of Norway INTPART project “ARCONOR: Arctic cooperation between Norway, Russia, India, China and US in satellite Earth observation and Education”, EC Horizon2020 “INTAROS: Integrated Arctic Observation System” and the organizing partners.

Applications by 1. August at 12:00 CET

Download announcement

The aim of this research school is to provide students with an overview of state-of the-art research in the Arctic from observations through process understanding and model development to application. The research school will have five sessions addressing:

(1) Observational capabilities: including in-situ measurements and satellite remote sensing, field campaigns and operational resources;
(2) Dynamics of the Arctic environment: what we know about the most important processes and how we include them in climate models;
(3) Surface coupling: a review of the multitude of surface coupling processes in the Arctic and current approaches to integrating this understanding in models at different scales;
(4) Climate projection and prediction: anthropogenically-forced and natural climate change in the Arctic, perspective from the 21st century and opportunities with climate prediction;
(5) Modelling for Arctic applications: using climate model results in other domains with examples from simulating marine primary production, future shipping routes, and other industrial activities in ice covered waters

Find meeting Webpage


Announcement: 2nd GOTHAM international summer school on: Global Teleconnections in the Earth’s Climate System

The summer school will be held
9-13 September in Beijing, China

Download meeting announcement

Organised by the LASG/IAP, the second GOTHAM Summer School will train young scientists on a unique combination of interdisciplinary scientific topics and tools relevant for understanding teleconnections and their role in causing extreme weather events. The school comprises lectures as well as tutorial sessions by some of the world’s leading experts in this field.

Specific topics include:

  • Fundamental dynamics in the teleconnections
  • Global consequences of extreme El Niños
  • Mid-latitude weather extremes and the role of tropical extratropical and Arctic drivers
  • Stratosphere dynamics and stratosphere-troposphere interactions
  • Internal variability and external drivers of South and East Asian systems
  • Interactions between global teleconnection patterns.
Participation

The Summer School is intended to host 30-40 young researchers working in relevant topical areas, both frim GOTHAm partners and external institutes. Registration is free-of-charge and accommodation expenses will be covered for all arrendees. Participation is applied through website http://project.lasg.ac.cn/gotham.

Organisers:

Bo Wu (IAP)


Announcement: Atmospheric Circulation in a Changing Climate

 
A joint DynVarMIP/CMIP6 and SPARC DynVar & SNAP Workshop
22-25 October 2019
Universidad Complutense de Madrid

Download the second announcement

The four-day workshop will be organized about two main science topics:

(1) The role of atmospheric dynamics in climate prediction and change. In particular, the DynVarMIP output request will allow for a first complete assessment of atmospheric momentum and heat transport in CMIP climate models, including the heat and momentum transport associated with subgrid scale boundary layer processes and parameterized gravity wave fluxes.

(2) Stratosphere-troposphere coupling and its role in surface weather predictability. The focus is on sub-seasonal to seasonal (S2S) timescales, where stratospheric processes appear to be important. A goal is to take advantage of ensemble hindcasts by the forecast systems within the S2S project.

The workshop aim is to bring together the climate change and seasonal prediction communities to focus on related questions on (for example), atmospheric teleconnections, blocking events, storm tracks dynamics, and interactions between the stratospheric polar vortex and the tropospheric jets. To this end, we call for analysis of the CMIP experiments, including the DynVarMIP diagnostic request, and of the S2S hindcast experiments. The workshop will include discussion to facilitate coordination of future analysis efforts.

Travel support for Early Career Scientists (ECS) and participants from underrepresented countries has been provided by the IAMAS, US NSF, and WMO (WCRP/SPARC). ECS’s include students, postdocs, and non-tenured faculty with in approximately 8 years of their PhD.

Scientific Program
  • The role of atmospheric dynamics in climate model biases
  • A mechanistic understanding of atmospheric circulation trends
  • Atmospheric heat and momentum budgets in a changing climate
  • Stratosphere-troposphere coupling and tropospheric predictability
Abstract Submission and Registration
Abstract submission deadline: closed
Travel support application deadline:                   .  closed
Registration deadline: 20 September 2019
 
Registration

Space is limited to approximately 80 participants. All participants must be registered. Information on registration (and registration fee) will be included here in due time.

Local Organizing Committee
Natalia Calvo (nataliac@fis.ucm.es), Ricardo Garcia-Herrera, David Barriopedro, Marta Abalos, Blanca Ayarzagüena, and Alvaro de la Cámara (Universidad Complutense de Madrid, Spain)
 
Scientific Organizing Committee
Ed Gerber (gerber@cims.nyu.edu) (New York University, USA), Elisa Manzini (Max-Planck-Institut für Meteorologie, Hamburg, DE), Amy Butler (CIRES/University of Colorado and National Oceanic and Atmospheric Administration, Boulder, USA), Natalia Calvo (Universidad Complutense de Madrid, Spain), Andrew Charlton-Perez (University of Reading, UK), Daniela Domeisen (ETH Zürich, CH), and Alexey Karpechko (Finnish Meteorological Institute, Helsinki, FI).
 
Find workshop webpage

Registration open: the Cryosphere and ATmospheric Chemistry (CATCH)

2019 CATCH Open Science Workshop
7-8 December 2019
University of California, Berkeley, USA

An important objective of this workshop is to gather ideas and community support to develop CATCH working groups in order to focus research on emerging CATCH topics and research challenges. Therefore, this is a working workshop and all participants will have an active participation role. We are not collecting abstracts, but rather titles of presentations that participants would like to give. Following registration we will put together an agenda with talks, posters, and discussion sessions. Participants will be notified of their presentation type a month prior to the meeting. You are also welcome to attend without giving a presentation and your input to the working workshop will be through the discussion sessions in addition to Q&A during the oral and poster presentations.

There is limited funding available for travel support. Please only apply for travel support if you absolutely need it. Priority for travel support will be for early career scientists (current graduate student or within 4 years of receiving a PhD, excluding career breaks) and scientists from scientifically emerging countries.

Registration Information:

Registration fee: $150.00 The registration fee includes lunches and coffee/tea breaks for two days, and a group dinner on 7 December. Registration closes:  11 October 2019

Cancellations will include a $20.00 fee The CATCH Open Science Workshop is limited to 120 participants. If there are more than 120 registrations, the registrations will be evaluated. If your registration is declined, you will receive a full refund for the registration fee.

More information: catchscience.org


Announcement: Upcoming COSPAR meetings in 2019 and 2020
 
4th Symposium of the Committee on Space Research (COSPAR):  Small Satellites for Sustainable Science and Development

“COSPAR 2019”

Date: 4 – 8 November 2019
Place: Herzliya, Israel
Website: http://www.cospar2019.org/
Contact: COSPAR Secretariat cospar@cosparhq.cnes.fr

Host Organization: The Israel Academy of Sciences and Humanities

Scientific Program Chair: Professor Morris Podolak, Tel Aviv University, Dept. of Geosciences

Abstract Deadline: 15 April 2019

Topics:
– Satellite and nanosatellite observations of ground and underground soil
– Ground water, seas, and oceans
– Atmosphere and ionosphere
– Magnetosphere
– Solar system objects (planets, asteroids, interplanetary space)
– Extrasolar planets and the interstellar medium
– The Milky Way and intergalactic space
– Education for space engineering
– Space sciences

Selected papers published in Advances in Space Research and Life Sciences in Space Research, fully refereed journals with no deadlines open to all submissions in relevant fields.

 

43rd Scientific Assembly of the Committee on Space Research (COSPAR) and Associated Events

“COSPAR 2020”

Date: 15 – 23 August 2020
Place: Sydney, Australia
Websites:
https://www.cospar-assembly.org (scientific program)
http://www.cospar2020.org (registration, accommodation, etc.)
Contact: COSPAR Secretariat cospar@cosparhq.cnes.fr

Host Organization: Australian Academy of Science

Scientific Program Chair: Prof. Iver Cairns, University of Sydney, School of Physics

Abstract Deadline: mid-February 2020

Topics:

Approximately 125 meetings covering the fields of COSPAR Scientific Commissions (SC) and Panels:
– SC A:  The Earth’s Surface, Meteorology and Climate
– SC B:  The Earth-Moon System, Planets, and Small Bodies of the Solar System
– SC C:  The Upper Atmospheres of the Earth and Planets Including Reference Atmospheres
– SC D:  Space Plasmas in the Solar System, Including Planetary Magnetospheres
– SC E:  Research in Astrophysics from Space
– SC F:  Life Sciences as Related to Space
– SC G:  Materials Sciences in Space
– SC H:  Fundamental Physics in Space
– Panel on Satellite Dynamics (PSD)
– Panel on Scientific Ballooning (PSB)
– Panel on Potentially Environmentally Detrimental Activities in Space (PEDAS)
– Panel on Radiation Belt Environment Modelling (PRBEM)
– Panel on Space Weather (PSW)
– Panel on Planetary Protection (PPP)
– Panel on Capacity Building (PCB)
– Panel on Education (PE)
– Panel on Exploration (PEX)
– Panel on Interstellar Research (PIR)
– Special events:  interdisciplinary lectures, round table, etc.

Selected papers published in Advances in Space Research and Life Sciences in Space Research, fully refereed journals with no deadlines open to all submissions in relevant fields.

 SPARC publications
New edition of the SPARC newsletter available online:

SPARC, 2019: SPARC Newsletter No. 53, July 2019, 44 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 27 published papers. More are accepted and under revision. It is still open for submissions until 30 September 2019.


SPARC Reanalysis Intercomparison Project - Special Issue in ACP
The collection already contains 34 published papers. More are accepted and under revision. It is still open for submissions until 31 December 2019.


Water Vapour Intercomparison II (WAVAS-II) - Joint Special Issue in ACP/AMT/ESSD
The collection already contains 13 published papers. More are accepted and under revision. It is still open for submissions until 30 September 2019


Towards Unified Error Repoting (TUNER) - Special Issue in AMT
The collection already contains 5 published papers. It is open for submissions until 31 August 2020.

StratoClim stratospheric and upper tropospheric processes for better climate predictions
The collection has recently opened and already contains 1 published paper. It is open for submissions until 01 March 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

CCMi Summer school and workshop
4 - 8 August
Hong Kong
Find meeting Webpage

TUNER workshop
9 – 13 Sept  2019
Helsinki, Finnland
 
Data Assimilation Working Group Meeting
11. – 13. Sept. 2019
Boulder, Colorado, USA


SOLARIS-HEPPA working group meeting
18-19 September 2019
IAA, Granada, Spain
 
Workshop on Atmospheric Circulation in a Changing Climate
22-25 October 2019
Universidad Complutense de Madrid, Spain
Find meeting webpage

SPARC SSG meeting
4-6 December 2019
Boulder, CO, USA
(by invitation only)

 
Find all SPARC meetings

SPARC-related Meetings
 
AOGS 16th Annual Meeting
28 Jul – 2 Aug 2019
Singapur
 
American Monsoons - Progress and Future Plans
19 – 24 Aug 2019
State of São Paulo, Brazil

2nd GOTHAM Summer School
9 – 13 Sept 2019
Peking, China
 
WGNE34
24 – 27 Sep 2019
Deutscher Wetterdienst, Frankfurter Str. 135, 63067 Offenbach am Main, Germany (map)
Find Meeting Webpage

2019 Polar CORDEX Workshop
7 – 9 Oct 2019
Danish Meteorological Institute, Copenhagen, Denmark

WCRP Summer School: Institute of Advanced Studies in Climate Extremes and Risk Management
21 Oct – 1 Nov 2019
Nanjing University of Information Science & Technology, Pukou, Nanjing, China,

WCRP climate science week during AGU 2019:
9 - 13 Dec 2019, San Francisco, USA
   Organised sessions during the wole weeka, as well as:

   7 December 2019 - Early Career Workshop - information coming soon.
   8 December 2019 - WCRP 40th Anniversary Symposium
more information


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).

 

On the representation of major stratospheric warmings in reanalyses. By B. Ayarzagüena et al. in Atmospheric Chemistry and Physics.

The biggest unknowns related to decadal prediction: what 50 experts think are the 5 major knowledge gaps. By D. Bojovic et al. in the Bulletin of the American Meteorological Society.

Stratospheric Gravity-Wave Products from Satellite Infrared Nadir Radiances in the Planning, Execution and Validation of Aircraft Measurements during DEEPWAVE. By S.D. Eckermann et al. in the Journal of Applied Meteorology and Climatology.

What drives the lifecycle of tropical anvil clouds? By B. Gasparini et al. in the Journal of Advances in Modeling Earth Systems.

Decadal global temperature variability increases strongly with climate sensitivity. By F.J.M.M. Niijsse et al. in Nature: Climate Change.

A study on harmonizing total ozone assimilation with multiple sensors. By Y.J. Rochon, M. Sitwell, and Y.-M. Cho in Atmospheric Chemistry and Physics.

The Signal‐to‐Noise Paradox for Interannual Surface Atmospheric Temperature Predictions. By F. Sévellec and S.S. Drijfhout in the Geophysical Research Letters.

Why do Antarctic Ozone recovery trends vary? By S.E. Strahan, A.R. Douglass, and M.R. Damon in the Journal of Geophysical Research: Atmospheres.

Comparison of ground-based and satellite measurements of water vapour vertical profiles over Ellesmere Island, Nunavut. By D. Weaver et al. in Atmospheric Measurement Techniques.

On Estimating the Cross‐Correlation and Least‐squares Fit of One Dataset to Another with Time Shift. By C.F. Chao and C.H. Chung in Earth and Space Science.

A 1D RCE study of factors affecting the tropical tropopause layer and surface climate. By S. Dacie et al. in the Journal of the Climate.

Influence of Arctic stratospheric ozone on surface climate in CCMI models. By O. Harari et al. in Atmospheric Chemistry and Physics.

The impact of radiosounding observations on numerical weather prediction analyses in the Arctic. By T. Naakka et al. in the Geophysical Research Letters.

FORMATION OF ARCTIC STRATOCUMULI THROUGH ATMOSPHERIC RADIATIVE COOLING. By L.F. Simpfendoerfer et al. in the Journal of Geophysical Research: Atmospheres.

Is Arctic Amplification Dominated by Regional Radiative Forcing and Feedbacks: Perspectives From the World‐Avoided Scenario. By J.G. Virgin and K.L. Smith in the Geophysical Research Letters.

Updated Temperature Data Give a Sharper View of Climate Trends. By H.-M. Zhang et al. in Earth and Space Science news (EOS).

Predictability of Weather and Climate. By V. Krishnamurthy in Earth and Space Science.

Optimization of Gravity Wave Source Parameters for Improved Seasonal Prediction of the Quasi-Biennial Oscillation. By C.A. Barton et al. in the Journal of the Atmospheric Sciences.

Using Project Loon super‐pressure balloon observations to investigate the inertial peak in the intrinsic wind spectrum in the mid‐latitude stratosphere. By J.P. Conway et al. in the Journal of Geophysical Research: Atmospheres.

China plans CFC-monitoring network to investigate rogue emissions. News article by D. Cyranoski in Nature.

ESD Reviews: Climate feedbacks in the Earth system and prospects for their evaluation. By C. Heinze et al. in Earth System Dynamics.

Interannual variations in Lower Stratospheric Ozone during the period 1984–2016. By J. Lu et al. in the Journal of Geophysical Research: Atmospheres.

Quantification of water vapour transport from the Asian monsoon to the stratosphere. By M. Nützel et al. in Atmospheric Chemistry and Physics.

Observational Evidence of Horizontal Transport‐Driven Dehydration in the TTL. By L.L. Pan et al. in the Geophysical Research Letters.

Blocking statistics in a varying climate: lessons from a ‘traffic jam’ model with pseudostochastic forcing. By A. Paradise et al. in the Journal of the Atmospheric Sciences.

Trends of vertically integrated water vapor over the Arctic during 1979-2016: Consistent moistening all over? By A. Rinke et al. in the Journal of the Climate.

Impact of El Niño–Southern Oscillation on the interannual variability of methane and tropospheric ozone. By M.J. Rowlinson et al. in Atmospheric Chemistry and Physics.

Effects of the tropospheric large‐scale circulation on European winter temperatures during the period of amplified Arctic warming. By T. Vihma et al. in the International Journal of Climatology.

The tropopause inversion layer interaction with the inertial gravity wave activities and its latitudinal variability. By Y. Zhang et al. in the Journal of Geophysical Research: Atmospheres.

Internal interannual variability of the winter polar vortex in a simple model of the seasonally evolving stratosphere. By L.A. Hatfield and R.K. Scott in the Quarterly Journal of the Royal Meteorological Society.

Assessing changes in risk of amplified planetary waves in a warming world. By C. Huntingford et al. in the Atmospheric Science Letters.

Characteristics of Atmospheric Turbulence Retrieved from High Vertical‐Resolution Radiosonde Data in the US. By H.-C. Ko et al. in the Journal of Geophysical Research: Atmospheres.

Differences between Arctic interannual and decadal variability across climate states. By J. Reusen, E. van der Linden, and R. Bintanja in the Journal of the Climate.

Diurnal Forcing and Phase Locking of Gravity Waves in the Maritime Continent. By J.H. Ruppert Jr. and F. Zhang in the Journal of the Atmospheric Sciences.

Does increased atmospheric resolution improve seasonal climate predictions? By A.A. Scaife et al. in the Atmospheric Science Letters.

Climate change made Europe’s mega-heatwave five times more likely. News article by Q. Schiermeier in Nature.

On the linearity of the stratospheric and Euro-Atlantic sector response to ENSO. By P. Trascasa-Castro et al. in the Journal of the Climate.

Hotness and Coldness Indexes Based on the Fahrenheit Scale. By M.J. Treacy, C.N. Ramirez and M. O’Keeffe in Earth & Space Science News (EOS).

Sensitivity of Gravity‐wave Momentum Flux to Moisture in the Mei‐Yu Front Systems. By Y. Wang et al. in the Geophysical Research Letters.

On the Sensitivity of Convectively Coupled Equatorial Waves to the Quasi Biennial Oscillation. By S. Abhik, H.H. Hendon, and M.C. Wheeler in the Journal of the Climate.

Geographical distribution of thermometers gives the appearance of lower historical global warming. By R.E. Benestad et al. in the Geophysical Research Letters.

Interannual Relationship between the Boreal Spring Arctic Oscillation and the Northern Hemisphere Hadley Circulation Extent. By D. Hu et al. in the Journal of the Climate.

Tropospheric mixing and parametrization of unresolved convective updrafts as implemented in the Chemical Lagrangian Model of the Stratosphere (CLaMS v2.0). By P. Konopka et al. in Geoscientific Model Development.

Disconnect Between Hadley Cell and Subtropical Jet Variability and Response to Increased CO2. By M.E. Menzel, D. Waugh, and K. Grise in the Geophysical research Letters.

Multi‐century trends to wetter winters and drier summers in the England and Wales precipitation series explained by observational and sampling bias in early records. By C. Murphy et al. in the International Journal of Climatology.

Separating and quantifying the distinct impacts of El Niño and sudden stratospheric warmings on North Atlantic and Eurasian wintertime climate. By J. Oehrlein, G. Chiodo, and L.M. Polvani in the Atmospheric Science Letters.

Deriving tropospheric ozone from assimilated profiles. By J.C.A. van Peet and R.J. van der A in Atmospheric Chemistry and Physics.

Diagnosing observed stratospheric water vapor relationships to the cold point tropical tropopause. By W. Randel and M. Park in the Journal of Geophysical Research: Atmospheres.

Influence of the QBO on the MJO during coupled model multiweek forecasts. By S. Abhik and H.H. Hendon in the Geophysical Research Letters.

Water vapor in the Asian summer monsoon anticyclone: Comparison of balloon‐borne measurements and ECMWF data. By S. Brunamonti et al. in the Journal of Geophysical Research: Atmospheres.

Role of latent heating vertical distribution in the formation of the tropical cold trap. By K.-W. Chang and T.S. L’Ecuyer in the Journal of Geophysical Research: Atmospheres.

A high-resolution 1983-2016 Tmax climate data record based on InfraRed Temperatures and Stations by the Climate Hazard Center. By C. Funk et al. in the Journal of the Climate.

Meridional Structure and Future Changes of Tropopause Height and Temperature. By S. Hu and G.K. Vallis in the Quarterly Journal of the Royal meteorological Society.

Banned CFC Emissions Tracked to Eastern China. By M.C. Morton in Earth and Space Science news (EOS).

Influence of quasi‐biennial oscillation on the boreal winter extratropical stratosphere in QBOi experiments. By H. Naoe and K. Yoshida in the Quarterly Journal of the Royal meteorological Society.

Modulation of the Northern Winter Stratospheric El Niño–Southern Oscillation Teleconnection by the PDO. By J. Rao, C.I. Garfinkel, and R. Ren in the Journal of the Climate.

The Effects of a 1998 Observing System Change on MERRA‐2‐based Ozone Profile Simulations. By R.M. Stauffer et al. in the Journal of Geophysical Research: Atmospheres.

Quantifying Regional Sensitivities to Periodic Events: Application to the MJO. By A.M. Jenney, D.A. Randall, and E.A. Barnes in the Journal of Geophysical Research: Atmospheres.
–> See also: EOS article at: https://eos.org/editor-highlights/linking-regional-weather-and-climate-to-remote-events

The ENSO and QBO impact on ozone variability and stratosphere‐troposphere exchange relative to the subtropical jets. By M.A. Olsen, G.L. Manney, and J. Liu in the Journal of Geophysical Research: Atmospheres.

Setting and smashing extreme temperature records over the coming century. By S.B. Power and F.P.D. Delage in Nature: Climate Change.

Spectral Empirical Orthogonal Function analysis of weather and climate data. By O.T. Schmidt et al. in the Monthly Weather Review.

An international conference that presents current advances in simulating and observing atmospheric processes.
–> Conference report on: UCP2019 – Understanding Clouds and Precipitation. By W. Schubotz et al. in the Bulletin of the American Meteorological Society.

Intercomparison of gravity waves in global convection-permitting models. By C.C. Stephan et al. in the Journal of the Atmospheric Sciences.

Efficient modelling of the interaction of mesoscale gravity waves with unbalanced large-scale flows: Pseudomomentum-flux convergence versus direct approach. By J. Wei, G. Bölöni, and U. Achatz in the Journal of the Atmospheric Sciences.

Isotopic constraint on the twentieth-century increase in tropospheric ozone. By L.Y. Yeung et al. in Nature.

Trends in summer heatwaves in Central Asia from 1917 to 2016: association with large‐scale atmospheric circulation patterns. By S. Yu et al. in the International Journal of Climatology.

Significant uncertainty in the representation of orography in numerical weather prediction and implications for atmospheric drag and circulation. By A.D. Elvidge et al. in the Journal of Advances in Modeling Earth Systems.

Weakening of the teleconnection from El Niño‐Southern Oscillation to the Arctic stratosphere over the past few decades: What can be learned from subseasonal forecast models? By C.I. Garfinkel et al. in the Journal of Geophysical Research: Atmospheres.

Radiative Convective Equilibrium and Organized Convection: An Observational Perspective. By C. Jacob, M.S. Singh, and L. Jungandreas in the Journal of Geophysical Research: Atmospheres.

Rising methane: A new climate challenge. By S.E. Mikaloff Fletcher and H. Schaefer in Science.

Strongly coupled data assimilation in multiscale media: experiments using a quasi‐geostrophic coupled model. By S.G. Penny et al. in the Journal of Advances in Modeling Earth Systems.

Extratropical age of air trends and causative factors in climate projection simulations. By P. Šácha et al. in Atmospheric Chemistry and Physics.

Subseasonal‐to‐seasonal predictability of the Southern Hemisphere eddy‐driven jet during austral spring and early summer. By N.J. Byrne, T.G. Shepherd, I. Plichtchouk in the Journal of Geophysical Research: Atmospheres.

Attribution of the Hemispheric Asymmetries in Trends of Stratospheric Trace Gases Inferred from Microwave Limb Sounder (MLS) Measurements. By Y. Han et al. in the Journal of Geophysical Research: Atmospheres.

IAMAS: a century of international cooperation in atmospheric sciences. By M.C. MacCracken and H. Volkert in History of Geo- and Space Sciences.

Large impacts, past and future, of ozone‐depleting substances on Brewer‐Dobson circulation trends: A multi‐model assessment. By L.M. Polvani et al. in the Journal of Geophysical Research: Atmospheres.

Implication of strongly increased atmospheric methane concentrations for chemistry–climate connections. By F. Winterstein et al. in Atmospheric Chemistry and Physics.

 

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