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

Impact of Lagrangian transport on lower-stratospheric transport timescales in a climate model. By E.J. Charlesworth et al. in Atmospheric Chemistry and Physics.

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.

Role of equatorial waves and convective gravity waves in the 2015/16 quasi-biennial oscillation disruption. By M.-J. Kang, H.-Y. Chun, and R.R. Garcia in Atmospheric Chemistry and Physics.

50 years of balloon-borne ozone profile measurements at Uccle, Belgium: short history, scientific relevance and achievements in understanding the vertical ozone distribution. By R. Van Maleren et al. in Atmospheric Chemistry and Physics.

Infrequent, Rapid Transport Pathways to the Summer North American Upper Troposphere and Lower Stratosphere. By X. Wang, W. Randel, and W. Yutian in the Geophysical Research Letters.

Discussion papers – open for comment:

A multi-sensor satellite-based archive of the largest SO2 volcanic eruptions since 2006. By P.-Y. Tournigand et al. in Earth System Science Data.

Starting with January 2021, EUMETSAT will restart their series of open, online short courses on data discovery for weather, oceanography, air quality and climate which ran successfully over the autumn months.

The events are open to all and address a wide range of attendees, from service providers to young (and less young) scientists and forecasters. Each event includes a webinar on Zoom, including a demonstration of data discovery and application. The courses are a great opportunity to both explore the data and engage in discussion with EUMETSAT experts and colleagues.

Find webpage for information on the schedule, registration and the course pages are available at

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

Sudden Stratospheric Warmings. By M.P. Baldwin et al. in the Reviews of Geophysics.

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

Tropical temperature variability in the UTLS: New insights from GPS radio occultation observations. By B. Scherllin-Pirscher et al. in the Journal of the Climate.

Clouds, radiation, and atmospheric circulation in the present‐day climate and under climate change. By A. Voigt et al. in WIREs Climate Change.

Discussion papers – open for comment:

Reanalysis intercomparison of potential vorticity and potential-vorticity-based diagnostics. By L.F. Millan, G.L. Manney, and Z.D. Lawrence in Atmospheric Chemistry and Physics.

The Impact of Volcanic Eruptions of Different Magnitude on Stratospheric Water Vapour in the Tropics. By C.A. Kroll et al. in Atmospheric Chemistry and Physics.

Smoke-charged vortices in the stratosphere generated by wildfires and their behaviour in both hemispheres: comparing Australia 2020 to Canada 2017. By H. Lestrelin 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).

 

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.

 

Discussion papers – open for comment:

Overview and update of the SPARC Data Initiative: Comparison of stratospheric composition measurements from satellite limb sounders. By M.I. Hegglin et al. in Earth System Science Data.

Indicators of Antarctic ozone depletion: 1979 to 2019. By G.E. Bodeker and S. Kremser 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).

 

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.

 

Discussion papers – open for comment:

Measurement report: Regional trends of stratospheric ozone evaluated using the MErged GRIdded Dataset of Ozone Profiles (MEGRIDOP). By V.F. Sofieva et al. in Atmospheric Chemistry and Physics.

Find the most-recent news from WCRP.

The newsletter includes the topics:

• The ‘new’ WCRP will soft launch in 2021
• Two new JSC members bring social science to WCRP
• New WCRP Lighthouse Activities
• WCRP Climate Research Forums
• New Head of WCRP Secretariat
• Updates from the Young Earth System Scientists (YESS) and the World Weather Research Programme (WWRP)
• Selected community, sponsor and partner news

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

 

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.

 

Discussion papers – open for comment:

Differences in the QBO response to stratospheric aerosol modification depending on injection strategy and species. By H. Franke, U. Niemeier, and D. Visioni in Atmospheric Chemistry and Physics.

The SOLAS Science Plan for 2015-2025 follows a continually-evolving 2-year strategy that provides a moving target and a solid basis to continue the operation of the project. This month, the Implementation Strategy 2020 has been released by the SOLAS Scientific Steering Committee with significant community input. Read more about the strategy here.

Since 2004, the Surface Ocean – Lower Atmosphere Study (SOLAS) project is an international research initiative aiming to understand the key biogeochemical-physical interactions and feedbacks between the ocean and atmosphere under the sponsorship of SCOR, Future Earth, WCRP, and iCACGP.

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

 

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.

 

Discussion papers – open for comments:

Mixing at the extratropical tropopause as characterized by collocated airborne H2O and O3 lidar observations. By A. Schäfler, A. Fix, and M. Wirth in Atmospheric Chemistry and Physics.

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.