CCMi has announced that they plan to have a virtual Tri-MIP-athlon 3 workshop  this autumn to discuss future plans and recent progress within AerChemMIP, RFMIP and PDRMIP.

Dates: 16-20 November 2020

Place: zoom (web interface) or any other webtool tbd (possibly with breakout groups)

Times:

2 hours every day (incl. 1 hour discussion)

EU   3pm –   5pm

NY   9am – 11am

CA   6am –   8am

JP  10pm – 12midnight

CH   9pm – 11pm

More information will be posted in late Summer.

With best wishes for the summer from the organizers

Michael, Gunnar, Vaishali, Bill, Jean Francois, Robert

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

Highlight articles (office choice):

The SPARC Quasi‐Biennial Oscillation initiative. By J.A. Anstey, N. Butchart, K. Hamilton, and S.M. osprey in the Quarterly Journal of the Royal meteorological Society.

The combined influence of ENSO and PDO on the spring UTLS ozone variability in South America. By B.L. Gamelin, L.M.V. Carvalho and M. Kayano in Climate Dynamics.

Stratosphere–Troposphere Exchange and O3 Variability in the Lower Stratosphere and Upper Troposphere over the Irene SHADOZ Site, South Africa. By T. Mkolo et al. in Atmosphere.

An Array of Ringing Global Free Modes Discovered in Tropical Surface Pressure Data. By T. Sakazaki and K. Hamilton in the Journal of the Atmospheric Sciences.

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.

Tropical Widening: From Global Variations to Regional Impacts. By P.W. Staten et al. in the Bulletin of the American Meteorological Society.

Warming reaches the South Pole. By S.E. Stammerjohn and T.A. Scambos in Nature Climate Change.

Synergy of Satellite- and Ground-Based Observations for Continuous Monitoring of Atmospheric Stability, Liquid Water Path, and Integrated Water Vapor: Theoretical Evaluations Using Reanalysis and Neural Networks. By M. Toporov and U. Löhnert in the Journal of Applied meteorology and Climatology.

Balloon‐borne observations of short vertical wavelength gravity waves and interaction with QBO winds. By R.A. Vincent and M.J. Alexander in the Journal of Geophysical Research: Atmospheres.

Will COVID’s Cleaner Skies Muddy Climate Models? By J. Wendel in earth and Space Science News.

Discussion papers – open for comments:

Measurement report: Immediate impact of the Taal volcanic eruption on atmospheric temperature observed from COSMIC-2 RO measurements. By S.R. Babu and Y.-A. Liou in Atmospheric Chemistry and Physics.

Seventeen years of ozone sounding at L’Aquila, Italy: evidence of mid-latitude stratospheric ozone recovery and tropospheric profile changes. By D. Visioni et al. in Atmospheric Chemistry and Physics.

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.

4-6 August 2020

An international virtual symposium on drivers, predictability, and actionable information

Under the auspices of WMO, sponsored by the Group on Earth Observation (GEO) Health Community of Practice, hosted the American Geophysical Union, and in partnership with several international and regional research organizations and entities from Africa, Asia, Europe, South America and the USA, a rapidly arranged international virtual symposium will take place in early August to examine the role of a range of environmental variables in the COVID-19 pandemic.

The purpose of the symposium is to examine what has been learned, what is known, can be tested, is understood, and can be reliably predicted about the role of environmental variables’ influence on the trajectory and potential seasonality of COVID-19 over the next 24 months, from global, hemispheric, regional and local perspectives.

The outcome of the conference will include a synthesis of the information presented and recommendations for further research and applications of this information in combating the disease across scales. Further information, including a full description of the scope and format of the event and the call for contributions (abstract submission) can be found on the WMO website. For further announcements including the opening of registrations (no cost to delegates) please follow the symposium on Twitter @CovEnvSymp.

Abstract deadline: 10 July 2020

During June and July, YESS will host a Science webinar series on different topics, from artificial intelligence to climate variability and change.

The second webinar of the series will take on July 1st (Wednesday) at 3pm UTC. The presentation Viewing Climate Signals through an AI lens will be lead by Dr. Elizabeth A. Barnes, from Colorado State University.

If you want to attend, please fill this form.

More information here.

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

Simplified SAGE II ozone data usage rules. By S. Kremser, L. Thomason and L.J. Bird in Earth System Science Data.

Current and Emerging Developments in Subseasonal to Decadal Prediction. By W.J. Merryfield et al. in the Bulletin of the American Meteorological Society.

The Southern Hemisphere Minor Sudden Stratospheric Warming in September 2019 and its predictions in S2S Models. By J. Rao et al. in the Journal of Geophysical Research: Atmospheres.

Antarctic ozone enhancement during the 2019 sudden stratospheric warming event. By S. Satieddine et al. in the Geophysical Research Letters.

Discussion papers – open for comment:

A Methodology for Attributing the Role of Climate Change in Extreme Events: A Global Spectrally Nudged Storyline. By L. van Garderen, F. Feser, and T.G. Shepherd in Natural Hazards and Earth System Sciences.

Strong variability of the Asian Tropopause Aerosol Layer (ATAL) in August 2016 at the Himalayan foothills. By S. Hanumanthu et al. in Atmosphreic Chemistry and Physics.

Convective uplift of pollution from the Sichuan basin into the Asian monsoon anticyclone during the StratoClim aircraft campaign. By K.-O. Lee et al. in Atmospheric Chemistry and Physics.

Scant evidence for a volcanically forced winter warming over Eurasia following the Krakatau eruption of August 1883. By L.M. Polvani and S.J. Camargo in Atmospheric Chemistry and Physics.

Evaluation of polar stratospheric clouds in the global chemistry-climate model SOCOLv3.1 by comparison with CALIPSO spaceborne lidar measurements. By M. Steiner et al. in Geoscientific Model Development.

User workshop on Satellite Atmospheric Composition – On-line 23-25 June

EUMETSAT invites you to join and contribute to an interactive workshop, organized in collaboration with the Copernicus Atmosphere Monitoring Service.

The event is open and will offer 6 sessions with inspirational and informative live web-presentations from EUMETSAT and European experts and open discussion.

The workshop discuss existing and upcoming EUMETSAT and Copernicus data, examples of applications with existing datasets, perspectives and related user needs.

The program and registration links to webinars: https://training.eumetsat.int/course/view.php?id=369.

Federico Fierli, Officer

User Support and Climate Service Division

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

Realistic simulation of tropical atmospheric gravity waves using radar‐observed precipitation rate and echo top height. By M. Bramberger, M.J. Alexander, and A.W. Grimsdell in the Journal of Advances in Modeling Earth Systems.

Differences between the 2018 and 2019 stratospheric polar vortex split events. By A.H. Butler et al. in the Quarterly Journal of the Royal Meteorological Society.

Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery. By J. Keeble et al. in Atmospheric Chemistry and Physics.

Describing the Relationship between a Weather Event and Climate Change: A New Statistical Approach. By A. Ribes, S. Thao, and J. Cattiaux in the Journal of Climate.

Variability and past long-term changes of brominated very short-lived substances at the tropical tropopause. By S. Tegtmeier et al. in Atmospheric Chemistry and Physics.

Observation and Simulation of Mountain Wave Turbulence above Iceland: Turbulence Intensification due to Wave Interference. By H. Wilms, M. Bramberger, and A. Dörnbrack in the Quarterly Journal of the Royal Meteorological Society.

A more general paradigm for understanding the decoupling of stratocumulus‐topped boundary layers: the importance of horizontal temperature advection. By Y. Zheng, D. Rosenfeld, and Z. Li in the Geophysical Research Letters.

Discussion papers – open for comment:

Pollution trace gas distributions and their transport in the Asian monsoon upper troposphere and lowermost stratosphere during the StratoClim campaign 2017. By S. Johansson et al. in Atmospheric Chemistry and Physics.

Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments. By L.W. Thomason et al., in Atmospheric Chemistry and Physics.

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

Future trends in stratosphere-to-troposphere transport in CCMI models. By M. Abalos et al. in Atmospheric Chemistry and Physics.

Long-term (1999–2019) variability of stratospheric aerosol over Mauna Loa, Hawaii, as seen by two co-located lidars and satellite measurements. By F. Chouza et al. in Atmospheric Chemistry and Physics.

Shear‐Parallel Tropical Convective Systems: Importance of Cold Pools and Wind Shear. By L.D. Grant et al. in the Geophysical Research Letters.

Quantifying uncertainties of climate signals in chemistry climate models related to the 11-year solar cycle – Part 1: Annual mean response in heating rates, temperature, and ozone. By M. Kunze et al. in Atmospheric Chemistry and Physics.

Deterministic prediction of stratospheric sudden warming events in the Global/Regional Integrated Model system (GRIMs). By K. Song, S.-W. Son, and A. Charlton-Perez in Climate Dynamics.

Seasonal stratospheric ozone trends over 2000–2018 derived from several merged data sets. By M.E. Szelag et al. in Atmospheric Chemistry and Physics.

Quasi‐6‐day waves in the mesosphere and lower thermosphere region and their possible coupling with the QBO and solar 27‐day rotation. By JY. Wang et al. in Earth and Planetary Physics.

Impacts of Subgrid Orographic Drag on the Summer Monsoon Circulation and Precipitation in East Asia. By R. Zhang, X. Xu, and Y. Wang in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment:

Stratospheric gravity-waves over the mountainous island of South Georgia: testing a high-resolution dynamical model with 3-D satellite observations and radiosondes. By N.P. Hindley et al. in Atmoapheric Chemistry and Physics.

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

Evidence for energetic particle precipitation and quasi-biennial oscillation modulations of the Antarctic NO2 springtime stratospheric column from OMI observations. By E.M. Gordon, A. Seppälä, and J. Tamminen in Atmospheric Chemistry and Physics.

On the forcings of the unusual Quasi-Biennial Oscillation structure in February 2016. By H. Li, R.P. Kedzierski, and K. Matthes in Atmospheric Chemistry and Physics.

Stratospheric impact on the Northern Hemisphere winter and spring ozone interannual variability in the troposphere. By J. Liu et al. in Atmospheric Chemistry and Physics.

Zonal Similarity of Long‐term Changes and Seasonal Cycles of Baseline Ozone at Northern Mid‐latitudes. By D.D. Parrish et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment:

Sensitivity of the southern hemisphere tropospheric jet response to Antarctic ozone depletion: prescribed versus interactive chemistry. By S. Haase et al. in Atmospheric Chemistry and Physics.

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

A rising trend of double tropopauses over South Asia in a warming environment: implications for moistening of the lower stratosphere. By S. Fadnavis et al. in the International Journal of Climatology.

Partitioning climate projection uncertainty with multiple large ensembles and CMIP5/6. By F. Lehner et al. in Earth System Dynamics.

QBO‐MJO connection in CMIP5 models. By Y. Lim and S.-W. Son in the Journal of Geophysical Research: Atmospheres.

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.

Erythemal Radiation, Column Ozone and the North America Monsoon. By M.R. Schoeberl et al. in the Journal of Geophysical Research: Atmospheres.

Evaluation of the Diurnal Variation of Upper Tropospheric Humidity in Reanalysis Using Homogenized Observed Radiances from International Geostationary Weather Satellites. By Y. Xue et al. in Remote Sensing.