The CLIVAR Early Career Scientists Symposium takes place on 18 and 24-25 September 2016 before and after the CLIVAR Open Science Conference which will be held in Qindao, PR China.

Early Career Scientists Symposium

The Early Career Scientists* Symposium (ECSS) is a 3-day programme designed by, and for, early career scientists. It is a unique opportunity for young scientists with outstanding research potential to interact and exchange ideas with their peers and senior scientists on what is required to better understand aspects of the climate system and address research challenges of societal relevance. An ambitious agenda is being developed to engage the ECS in the science topics addressed in the OSC, discussing the future of international efforts to address critical science needs, considering current pressing scientific and related societal challenges. The ECSS will include career development workshops, as well opportunities for the participants to discuss their scientific achievements, while building lasting relationships and collaborations with colleagues from different countries. To apply for a place at the Symposium, participants must submit an abstract as first author to the main conference, and indicate that they would like to take part in the Symposium. Those selected to attend the ECSS will be notified at the end of May 2016.

* ECS are defined as students or those researchers within 5 years of their most recent degree.

Travel Grants

Limited resources are available to support attendance of researchers from developing countries and early career scientists. Financial assistance can be requested only via the conference website on submission of an abstract. Deadline for requests is 15 March 2016. Participants requesting support will be notified of the availability of funds in May and June.

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

Tropospheric ozonesonde profiles at long-term U.S. monitoring sites: 1. A climatology based on self-organizing maps. By R.M. Stauffer et al. in the Journal of Geophysical Research: Atmospheres.

Effects of sulfate aerosol forcing on East Asian summer monsoon for 1985-2010. By M.J. Kim et al. in Geophysical Research Letters.

Contrasting fast precipitation responses to tropospheric and stratospheric ozone forcing. By C.R. Macintosh et al. in Geophysical Research Letters.

A nudged chemistry–climate model simulation of chemical constituent distribution at northern high–latitude stratosphere observed by SMILES and MLS during the 2009/2010 stratospheric sudden warming. By H. Akiyoshi et al. in the Journal of Geophysical Research: Atmospheres.

On the emissions and transport of bromoform: sensitivity to model resolution and emission location. By M.R. Russo et al. in Atmospheric Chemistry and Physics.

Validation of MIPAS IMK/IAA methane profiles. By A. Laeng et al. in Atmospheric Measurement Techniques.

Observational uncertainty of Arctic sea-ice concentration significantly affects seasonal climate forecasts. By F. Bunzel et al. in Geophysical Research Letters.

The importance of the Montreal Protocol in mitigating the potential intensity of tropical cyclones. By L.M. Polvani et al. in the Journal of Climate.

The seasonally varying effect of the Tibetan Plateau on Northern Hemispheric blocking frequency and amplitude. By K.-S. Yun et al. in Climate Dynamics.

Large Amplitude Mesospheric Response to an Orographic Wave Generated Over the Southern Ocean Auckland Islands (50.7°S) During the DEEPWAVE Project. By P.-D. Pautet et al. in the Journal of Geophysical Research: Atmospheres.

Advancing polar prediction capabilities on daily to seasonal time scales. By T. Jung et al. in the Bulletin of the American Meteorological Society.

Effect of gravity wave temperature fluctuations on homogeneous ice nucleation in the tropical tropopause layer. By T. Dinh 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).

Projected response of East Asian summer monsoon system to future reductions in emissions of anthropogenic aerosols and their precursors. By Z. Wang et al. in Climate Dynamics.

Effect of solar zenith angle specification in models on mean shortwave fluxes and stratospheric temperatures. By R.J. Hogan and S. Hirahara in Geophysical Research Letters.

Modulation of subtropical stratospheric gravity waves by equatorial rainfall. By N.Y. Cohen and W.R. Boos in Geophysical Research Letters.

Attribution of variations in the quasi-biennial oscillation period from the duration of easterly and westerly phases. By M. Yang and Y. Yu in Climate Dynamics.

The NASA Airborne Tropical TRopopause EXperiment (ATTREX): High-Altitude Aircraft Measurements in the Tropical Western Pacific. By J. Jensen et al. in the Bulletin of the American Meteorological Society.

The impact of stratospheric volcanic aerosol on decadal-scale climate predictions. By C. Timmreck et al. in Geophysical Research Letters.

Combining AIRS and MLS Observations for Three-Dimensional Gravity Wave Measurement. By C.J. Wright et al. in Geophysical Research Letters.

Wavelet Analysis of Polar Vortex Variability over the 20^th Century. By G.M. Glovin et al. in the Journal of Geophysical Research: Atmospheres.

Stratospheric temperature changes during the satellite era. By D.J. Seidel et al. in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment

What controls the low ice number concentration in the upper troposphere? By C. Zhou et al. in Atmospheric Chemistry and Physics Discussions.

Exploring atmospheric blocking with GPS radio occultation observations. By L. Brunner et al. in Atmospheric Chemistry and Physics Discussions.

Abstract submission deadline: 19 Feb 2016

Dear ACAM Community,

We would like to inform you of an opportunity to share current research related to ACAM during the upcoming AOGS meeting in Beijing, 31 July – 5 August 2016.

The deadline for abstract submissions is 19 February 2016. This is a great opportunity to keep some momentum and to establish the identity of the ACAM community, so please consider attending and contributing an abstract.

Session AS13:
Interaction of Atmospheric Composition and The Asian Monsoon

Conveners:
Hiroshi Tanimoto (NIES, Japan), Nguyen Thi Kim Oanh (AIT, Thailand), Manish Naja (ARIES, India), Jim Crawford (NASA Langley, USA), Laura Pan (NCAR, USA)

Session Description:
Monsoon Asia is a “frontier” of atmospheric science, and a variety of research programs are emerging with a great emphasis on the climate impact of regional emissions, air quality, and biogeochemical cycles and their coupling with monsoon dynamics. Increasing levels of trace species in the presence of high water vapor and intense solar radiation are raising the importance of understanding the physical, dynamical, and chemical processes over this region. Specific focus areas in this session include

1. emissions and air quality such as changes in atmospheric composition due to anthropogenic, biomass burning, and biogenic emissions,
2. chemistry-climate interactions such as aerosols and clouds in the Asian monsoon region, interplay of Asian monsoon convection and atmospheric chemistry, and UTLS response to the Asian monsoon,
3. the impacts of air quality on health and vegetation, and
4. biosphere-atmosphere interaction.

Both observational and modeling studies on these topics in the Asian Monsoon region are invited.

This session also seeks to foster a community of atmospheric composition studies in the Monsoon Asia and Oceania regions through introducing the Monsoon Asia and Oceania Networking Group (MANGO) and the Atmospheric Composition and the Asian Monsoon (ACAM) activity, both sponsored by IGAC and SPARC.

For more details on the conference, please visit:
http://www.asiaoceania.org/aogs2016/public.asp?page=home.htm

The full list of sessions can be found at:
http://www.asiaoceania.org/aogs2016/public.asp?page=sessionList.htm

For abstract submission:
http://www.asiaoceania.org/aogs2016/public.asp?page=abstract.htm

Cheers,
Hiroshi and Co-conveners

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

Do split and displacement sudden stratospheric warmings have different annular mode signatures? By A.C. Maycock and P. Hitchcock in Geophysical Research Letters.

Inertia gravity wave in the stratosphere and mesosphere observed by Doppler wind and temperature lidar. By G. Baumgartner et al. in Geophysical Research Letters.

Recent Hadley cell expansion: the role of internal atmospheric variability in reconciling modeled and observed trends. By C. Garfinkel et al. in Geophysical Research Letters.

The switching between zonal and blocked mid-latitude atmospheric circulation: a dynamical system perspective. By C. Faranda et al. in Climate Dynamics.

Improved stratospheric aerosol extinction profiles from SCIAMACHY: validation and sample results. By C. von Savigny et al. in Atmospheric Measurement Techniques.

Validation of MIPAS IMK/IAA methane profiles. By A. Laeng et al. in Atmospheric Measurement Techniques.

Effects of stratospheric variability on El Niño teleconnections. By J.H. Richter et al. in Environmental Research Letters.

Discussion papers – open for comment

First continuous ground-based observations of long period oscillations in strato-/mesospheric wind profiles. By R. Rüfenacht et al. in Atmospheric Chemistry and Physics Discussions.

Long-term trend analysis and climatology of tropical cirrus clouds using 16 years of lidar data set over Southern India. By A.K. Pandit et al. in Atmospheric Chemistry and Physics Discussions.

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

Absorbing and reflecting sudden stratospheric warming events and their relationship with tropospheric circulation. By K. Kodera et al. in the Journal of Geophysical Research: Atmospheres.

Effects of the Mt. Pinatubo eruption on decadal climate prediction skill of Pacific sea surface temperatures. By G.A. Meehl et al. in Geophysical Research Letters.

Global temperature response to the major volcanic eruptions in multiple reanalysis data sets. By M. Fujiwara et al. in Atmospheric Chemistry and Physics.

Wintertime Northern Hemisphere response in the Stratosphere to the Pacific Decadal Oscillation using the Whole Atmosphere Community Climate Model. By A.C. Kren et al. in the Journal of Climate.

Stationary wave interference, and its relation to tropical convection and Arctic warming. By M. Goss et al. in the Journal of Climate.

Resolving the impact of stratosphere-to-troposphere transport (STT) on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic ³⁵S tracer. By M. Lin et al. in the Journal of Geophysical Research: Atmospheres.

Impact of different Asian source regions on the composition of the Asian monsoon anticyclone and of the extratropical lowermost stratosphere. By B. Vogel et al. Atmospheric Chemistry and Physics.

Oceanic bromoform emissions weighted by their ozone depletion potential. By S. Tegtmeier et al. Atmospheric Chemistry and Physics.

Updated ozone absorption cross section will reduce air quality compliance. By E.D. Sofen et al. Atmospheric Chemistry and Physics.

Discussion papers – open for comment

Modeling lightning-NO_x chemistry at sub-grid scale in a global chemical transport model. By A. Gressent et al. in Atmospheric Chemistry and Physics Discussions.

Fast descent routes from within or near the stratosphere to Earth’s surface. By H. Itoh and Y. Narazaki in Atmospheric Chemistry and Physics Discussions.

Impact of major volcanic eruptions on stratospheric water vapour. By M. Löffler et al. in Atmospheric Chemistry and Physics Discussions.

Satellite observations of stratospheric hydrogen fluoride and comparisons with SLIMCAT calculations. By J.J. Harrison et al. in Atmospheric Chemistry and Physics Discussions.

Tuning of a convective gravity wave source scheme based on HIRDLS observations. By Q.T. Trinh et al. in Atmospheric Chemistry and Physics Discussions.

Impact of the Asian monsoon on the extratropical lower stratosphere: trace gas observations during TACTS over Europe 2012. By S. Müller et al. in Atmospheric Chemistry and Physics Discussions.

Submission deadline: 31 March 2016

The WCRP Data Advisory Council’s (WDAC) Observations for Model Evaluation Task Team seeks recommendations for data sets to be considered for inclusion in obs4MIPs.

Obs4MIPs refers to a limited collection of well-established and documented datasets that have been organized according to the Coupled Model Intercomparison Project (CMIP5 and CMIP6 currently in preparation) model output requirements and made available on the Earth System Grid Federation (ESGF). Each obs4MIP dataset corresponds to a field that is output in (or derivable from) one or more of the CMIP5 or CMIP6 experiments. This technical alignment of observational products with climate model output can greatly facilitate model data comparisons.

At present, obs4MIPs is limited to regularly gridded datasets, with a focus on global or near-global satellite data products. Past contributions have mostly consisted of monthly, global data products. Consideration and emphasis on higher frequency, as well as basin- to global-scale gridded in situ data sets is increasing. Of central importance is the continued obs4MIPs requirement for demonstrated (e.g. peer-reviewed publications) model evaluation uses of the proposed data set(s). Of particular interest for this call are data products that are of direct relevance to CMIP6 endorsed model intercomparison projects (http://www.wcrpclimate.org/modelling-wgcm-mip-catalogue/modelling-wgcm-cmip6-endorsed-mips).

The WDAC Task Team encourages recommendations for new obs4MIPs data sets to be made
between 1 December 2015 and 31 March 2016, and is committed to responding no later than 1 June 2016. For instructions on the procedures for recommending a data set for obs4MIPs, please refer to: https://www.earthsystemcog.org/projects/obs4mips/how_to_contribute.

For additional information on obs4MIPs, including background, references, links to the data, contact information, etc., please see the project website at:
https://www.earthsystemcog.org/projects/obs4mips/

Questions should be addressed to D. Waliser () and P. Gleckler ().

Call for participation and for papers

The South-East Asian School on Tropical Atmospheric Science (SEASTAS) and the 1st International Workshop on Extreme Weather in Changing Climate in the Maritime Continent will be held in Bandung, Indonesia from 5 to 8 January 2016.

Please refer to the SEASTAS and IWS website for further details.

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

Characterizing the Lifetime and Occurrence of Stratospheric-Tropospheric Exchange Events in the Rocky Mountain Region Using High Resolution Ozone Measurements. By J.T. Sullivan et al. in the Journal of Geophysical Research: Atmospheres.

Reassessment of MIPAS age of air trends and variability. By F.J. Haenel et al. in Atmospheric Chemistry and Physics.

A potential vorticity-based determination of the transport barrier in the Asian summer monsoon anticyclone. By F. Ploeger et al. in Atmospheric Chemistry and Physics.

Metrology of ground-based satellite validation: co-location mismatch and smoothing issues of total ozone comparisons. By T. Verhoelst et al.in Atmospheric Measurement Techniques.

A Solar Irradiance Climate Data Record. By O. Coddington et al. in the Bulletin of the American Meteorological Society.

Discussion papers – open for comment

Vortex-wide chlorine activation by a mesoscale PSC event in the Arctic winter of 2009/10. By T. Wegner et al. in Atmospheric Chemistry and Physics Discussions.

Atmospheric changes caused by galactic cosmic rays over the period 1960–2010. By C.H. Jackman et al. in Atmospheric Chemistry and Physics Discussions.

The Committee on Space Research will hold its 41st Scientific Assembly on 30 July – 7 August 2016 in Istanbul, Turkey.

Note the deadline for abstracts on 12 February 2016.

Find conference website.