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

Evidence for wave resonance as a key mechanism for generating high-amplitude quasi-stationary waves in boreal summer. By K. Kornhuber et al. in Climate Dynamics.

A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST. By S.J. Andrews et al. in Atmospheric Measurement Techniques.

Tropospheric ozone change from 1980 to 2010 dominated by equatorward redistribution of emissions. By Y. Zhang et al. in Nature Geoscience.

Stratospheric control of planetary waves. By P. Hitchcock and P.H. Haynes in Geophysical Research Letters.

A Strong Phase Reversal of the Arctic Oscillation in Midwinter 2015/16: Role of the Stratospheric Polar Vortex and Tropospheric Blocking. By H.H.N. Cheung et al. in the Journal of Geophysical Research: Atmospheres.

Barotropic decelerations of the southern stratospheric polar vortex. By C.A.F. Marques and Castanheira in the Quarterly Journal of the Royal Meteorological Society.

Remote control on NAO predictability via the stratosphere. By F. Hansen et al. in the Quarterly Journal of the Royal Meteorological Society.

Low frequency oscillations of the gravity wave energy density in the lower atmosphere at low latitudes revealed by US radiosonde data. By H.Y. Li et al. in the Journal of Geophysical Research: Atmospheres.

LALINET: The first Latin American-born regional atmospheric observational network. By J.C. Antunas-Marrero et al. in the Bulletin of the American Meteorological Society.

Regional and seasonal radiative forcing by perturbations to aerosol and ozone precursor emissions. By N. Bellouin et al. in Atmospheric Chemistry and Physics.

Connecting atmospheric blocking to European temperature extremes in spring. By L. Brunner et al. in the Journal of Climate.

Discussion papers – open for comment

Testing chemistry-climate models’ regulation of tropical lower-stratospheric water vapor. By K.M. Smalley et al. in Atmospheric Chemistry and Physics Discussions.

A New Differential Optical Absorption Spectroscopy Instrument to Study Atmospheric Chemistry from a High-Altitude Unmanned Aircraft. By J. Stutz et al. in Atmospheric Measurement Techniques Discussions.

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

What makes an annular mode “annular”? By E.P. Gerber and D.W.J. Thompson in the Journal of the Atmospheric Sciences.

Intercomparison and evaluation of satellite peroxyacetyl nitrate observations in the upper troposphere–lower stratosphere. By R.J. Pope et al. in Atmospheric Chemistry and Physics.

Vortex splitting on a planetary scale in the stratosphere by cyclogenesis on a sub planetary scale in the troposphere. By A. O’Neill et al. in the Quarterly Journal of the Royal Meteorological Society.

The effect of a well-resolved stratosphere on East Asian winter climate. By K. Wei et al. in Climate Dynamics.

Changes of the tropical tropopause layer under global warming. By P. Lin et al. in the Journal of Climate.

Discussion papers – open for comment

The role of methane in projections of 21st century stratospheric water vapour. By L.E. Revell et al. in Atmospheric Chemistry and Physics Discussions.

Impact of typhoons on the composition of the upper troposphere within the Asian summer monsoon anticyclone: the SWOP campaign in Lhasa 2013. By D. Li et al. in Atmospheric Chemistry and Physics Discussions.

Global large-scale stratosphere-troposphere exchange in modern reanalyses. By A.C. Boothe and C.R. Homeyer in Atmospheric Chemistry and Physics Discussions.

Stratospheric Variability at a glance – Analysis of the intra decadal timescale and the QBO. By D. Cai et al. in Atmospheric Chemistry and Physics Discussions.

Consistency between GRUAN sondes, LBLRTM and IASI. By X. Calbet et al. in Atmospheric Measurement Techniques Discussions.

Applications due 15 November

Monsoons are a global phenomenon, and the breadth of socio-economic areas in different regions is greatly influenced by its progress and consequences at regional and local scales. The Jeju National University (JNU) is launching a collaborative framework with the World Climate Research Programme (WCRP) on training and education for ocean and climate science, and organizes its first training school to share and promote contemporary issues in the area of monsoon study, particularly incorporating the interest of users (of information to understand and predict monsoon phenomena) of the Asia-Pacific region.

This school will focus on understanding tropical process and scale interactions therein (sub-daily, intraseasonal to interannual), for the Asia-Pacific region. It also aims to share knowledge and discuss scientific challenges for monsoon prediction particularly in intra-seasonal to seasonal scales. Participants will be requested to participate in open dialogues on the “user needs”, as well as the impacts of monsoon variability in changing climate to coastal zones.

The training school is targeted for young scientists and early-career forecasters in the relevant fields. It will take place from 16-21 January 2017.

Find more information and apply at: www.wcrp-climate.org/wcrp-jnu-overview

Congratualtions!

Meet the members of the SPARC Scientific Steering Group.

The Young Earth System Scientists (YESS) community describes its long-term vision and thoughts on the frontiers of Earth system science.

The YESS community has recently published a white paper ‘Earth System Science Frontiers – an ECS perspective‘ in the Bulletin of the American Meteorological Society (BAMS), currently available as an early online release.

In the paper, an active group of young Earth system scientists describe their long-term vision of the frontiers of Earth system science, paving the way towards an integrated understanding of the Earth system. The paper is an outcome of the World Meteorological Organization-funded Early Career Researchers Workshop at the Deutscher Wetterdienst in Offenbach, Germany, in October 2015 and focuses on four frontiers: seamless Earth system prediction, communication, user-driven science, and interdisciplinarity.

In the Science issue from 28 Oct 2016, Charles F. Kennel and colleagues discuss how the scientific community should become active in…

…crafting and implementing more effective policies in a system of highly decentralized global cooperation. With the 2015 Paris Agreement, governments launched a process that can move beyond setting agendas to coordinating national policies to manage the climate. Next month in Marrakesh, diplomats will convene to flesh out the Agreement. They need to focus on the infrastructure of data and analysis that will be needed as the Agreement becomes operational.

Find article.

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

Modification of the gravity wave parameterization in the Whole Atmosphere Community Climate Model: Motivation and results. By R.R. Garcia et al. in the Journal of the Atmospheric Sciences.

HF Radar Observations of a Quasi Biennial Oscillation in Mid-Latitude Mesospheric Winds. By G. Malhotra et al. in the Journal of Geophysical Research: Atmospheres.

Geoengineering with stratospheric aerosols: What don’t we know after a decade of research? By D.G. MacMartin et al. in Earth’s Future.

Nonlinear response of mid-latitude weather to the changing Arctic. By J.E. Overland et al. in Nature Climate Change.

Decadal variability of European sea level extremes in relation to the solar activity. By A. Martinez-Asensio et al. in Geophysical Research Letters.

A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST. By S.J. Andrews et al. in Atmospheric Measurement Techniques.

Discussion papers – open for comment

The role of methane in projections of 21st century stratospheric water vapour. By L.E. Revell et al. in Atmospheric Chemistry and Physics Discussions.

Impact of typhoons on the composition of the upper troposphere within the Asian summer monsoon anticyclone: the SWOP campaign in Lhasa 2013. By D. Li et al. in Atmospheric Chemistry and Physics Discussions.

Global large-scale stratosphere-troposphere exchange in modern reanalyses. By A.C. Boothe and C.R. Homeyer in Atmospheric Chemistry and Physics Discussions.

Stratospheric Variability at a glance – Analysis of the intra decadal timescale and the QBO. By D. Cai et al. in Atmospheric Chemistry and Physics Discussions.

Global Atmosphere Watch finds that high greenhouse gas levels mark the start of new era of climate reality.

According to the latest WMO annual Greenhouse Gas Bulletin issued by the Global Atmosphere Watch, globally averaged concentration of carbon dioxide in the atmosphere reached the symbolic and significant milestone of 400 parts per million for the first time in 2015 and surged again to new records in 2016 on the back of the very powerful El Niño event.

Find WMO media release, find WMO Greenhouse Gas Bulletin.

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

Earth System Science Frontiers – an ECS perspective. By the Young -Earth System- Scientists (YESS) in the Bulletin of the American Meteorological Society.

Observed Changes in the Southern Hemispheric Circulation in May. By D.J. Ivy et al. in the Bulletin of the American Meteorological Society.

Skilful predictions of the winter North Atlantic Oscillation one year ahead. By N. Dunstone et al. in Nature Geoscience.

How can we understand the global distribution of the solar cycle signal on the Earth’s surface? By K. Kodera et al. in Atmospheric Chemistry and Physics.

Barotropic and Baroclinic Eddy Feedbacks in the Midlatitude Jet Variability and Responses to Climate Change-Like Thermal Forcings. By D.A. Burrows et al. in the Journal of the Atmospheric Sciences.

Emissions of carbon tetrachloride from Europe. By F. Graziosi et al. Atmospheric Chemistry and Physics.

Spatially Continuous Mapping of Daily Global Ozone Distribution (2004–2014) with the Aura OMI Sensor. By X. Peng et al. in the Journal of Geophysical Research: Atmospheres.

Version 1.3 AIM SOFIE measured methane (CH₄): Validation and Seasonal Climatology. By P. Rong et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

Extending methane profiles from aircraft into the stratosphere for satellite total column validation: A comparative analysis of different data sources. By S. Verma et al. in Atmospheric Chemistry and Physics Discussions.

Merged ozone profiles from four MIPAS Processors. By A. Laeng et al. in Atmospheric Measurement Techniques Discussions.

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

Sensitivity of Simulated Mesospheric Transport of Nitrogen Oxides to Parameterized Gravity Waves. By K. Meraner et al. in the Journal of Geophysical Research: Atmospheres.

The Kinetics of the ClOOCl Catalytic Cycle. By T.P. Canty et al. in the Journal of Geophysical Research: Atmospheres.

Trends of tropical tropospheric ozone from 20 years of European satellite measurements and perspectives for the Sentinel-5 Precursor. By K.-P. Heue et al. in Atmospheric Measurement Techniques.

Discussion papers – open for comment

Thermodynamic and dynamic responses of the hydrological cycle to solar dimming. By J.E. Smyth et al. in Atmospheric Chemistry and Physics Discussions.

Characterization of the Long-term Radiosonde Temperature Biases in the Lower Stratosphere using COSMIC and Metop-A/GRAS Data from 2006 to 2014. By S.-P. Ho et al. in Atmospheric Chemistry and Physics Discussions.

30-year lidar observations of the stratospheric aerosol layer state over Tomsk (Western Siberia, Russia). By V.V. Zuev et al. in Atmospheric Chemistry and Physics Discussions.