Dear SPARC community,

Please find below the most recent SPARC eNews.

The SPARC website is updated frequently, so feel free to check for the most recent news items regularly. If you wish to have anything posted in the news section on the website, please don’t hesitate to contact us: office@sparc-climate.org

——————————————–
SPARC eNews – January 2016
——————————————–

28 January 2016
SPARC Implementation Plan 2016-2020
Historically SPARC concentrated on the role of the stratosphere in climate, but now includes foci throughout the atmosphere in recognition of the latest research, which clearly calls for a “whole atmosphere” approach. The new SPARC implementation plan 2016-2020 is organised around three refined scientific themes and a number of current and future activities of which many reflect the more regional focus and interdisciplinary nature of SPARC research.
> http://www.aparc-climate.org/publications/implementation-plans/

28 January 2016
SPARC Capacity Development Strategy
Capacity development has been a focus of SPARC since its inception. This has included support of attendance of early career researchers and scientists from developing countries to workshops and meetings, dedicated training activities, or data provision services. In developing the SPARC capacity development strategy, we have consulted and discussed with the community on various occasions. The SPARC Capacity Development Strategy is the culmination of developments to date and outlines a strategy for SPARC capacity development, with concrete goals and actions, providing a more structured approach with measurable outcomes.
> http://www.aparc-climate.org/fileadmin/customer/6_Publications/ProgPlan_PDF/SPARC_CDstrategy_final.pdf

27 January 2016
Call for abstracts: Quadrennial Ozone Symposium
Abstract submission closes on 1 March for this symposium which will take place from 4-9 September 2016 in Edinburgh, Scotland.
> http://www.aparc-climate.org/news/news/news/2016/01/27/quadrennial-ozone-symposium-in-edinburgh-uk-4-9-sept-2016/

26 January 2016
Pre-registration open: Summer school on Advanced Programming Techniques for Earth System Science
The intention of the ISSOAS-2016 summer school is to provide the basis for the effective exploitation of increasingly available High Performance Computing (HPC) resources in the field of Earth System Science. The summer school will take place from 28 August – 2 September 2016 at the Gran Sasso Science Institute, L’Aquila, Italy. Pre-registration closes on 29 February 2016.
> http://www.aparc-climate.org/news/news/news/2016/01/26/1st-announcement-of-2016-summer-school-on-advanced-programming-techniques-for-the-earth-system-sc/

21 January 2016
SPARC Newsletter No. 46 – January 2016
Find the digital version of the January 2016 issue of the SPARC newsletter at
> http://www.aparc-climate.org/publications/newsletter/

20 January 2016
Call for abstracts: CLIVAR OSC 2016
Submission of abstracts for the CLIVAR Open Science Conference is now open. It is also possible to apply for travel grants for the CLIVAR Early Career Scientists Symposium which takes place on 18 and 24-25 September 2016 before and after the CLIVAR Open Science Conference in Qingdao, PR China.
> http://www.aparc-climate.org/news/news/news/2016/01/20/clivar-osc-2016-call-for-abstracts-application-for-ecs-symposium-and-travel-grants-open/

6 January 2016
Submit your abstract: ACAM session at AOGS 2016
Hiroshi Tanimoto from NIES, Japan, and his Co-conveners invite the ACAM-community to submit an abstract for the session AS13 on “Interaction of Atmospheric Composition and The Asian Monsoon” which will be part of the AOGS meeting in Beijing, PR China, from 31July – 5 August 2016. Abstract submission deadline is 19 February.
> http://www.aparc-climate.org/news/news/news/2016/01/06/acam-session-at-aogs-2016-invitation-for-abstract-submission/

4 January 2016
Welcome to our new Co-chair and SSG members
A warm welcome to our new Co-chair Judith Perlwitz (NOAA, USA). Judith will lead the SPARC Scientific Steering Group together with Neil Harris (University of Cambridge, UK). New SSG members include Gufran Beig (Indian Institute of Tropical Meteorology, India), Olivia Martius (University of Bern, Switzerland), and Saulo Freitas (National Institute for Space Research, Brazil). Big thanks to our former Co-chair Joan Alexander, as well as SSG members Adam Scaife, Ed Gerber and Martin Schultz who rotated off in December.
> http://www.aparc-climate.org/organisation/steering-group/

10 December 2015
Call for observational datasets for inclusion in obs4MIPs
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. Data submission deadline is 31 March 2016.
> http://www.aparc-climate.org/news/news/news/2015/12/10/call-for-observation-datasets-for-inclusion-in-obs4mips/

3 December 2015
Submit your abstract: COSPAR 2016
The Committee on Space Research (COSPAR) will hold its 41^st Scientific Assembly from 30 July – 7 August 2016 in Istanbul, Turkey. The deadline for abstract submission is 12 February 2016.
> https://www.cospar-assembly.org

19 November 2015
QBOi, PSCi, and CCl4 now full SPARC activities
At the 23rd SPARC Scientific Steering Group meeting held from 10-13 November 2015 in Boulder, Colorado, USA, the emerging activities on Polar Stratospheric Clouds (PSCi), Quasi-Biennial Oscillation (QBOi), and Carbon Tetrachloride (CCl4) were accepted as full SPARC activities.
> http://sparc-climate.org/news/news/news/2015/11/19/emerging-sparc-activities-now-turned-into-fully-fledged-activities/

 

Find SPARC news.

Find more news from WCRP, CliC, CLIVAR and GEWEX.

 

————————————————————————

Upcoming SPARC meetings 

16-19 February 2016
SPARC workshop on Stratospheric Change and its Role in Climate Prediction (SHARP), Berlin, Germany

7-11 March 2016
Workshop on dynamics, transport and chemistry of the UTLS Asian monsoon, Boulder, CO, USA

6-8 April 2016
Workshop on atmospheric blocking, Reading, UK
Registration deadline: 10 February 2016

25-26 April 2016
Atmospheric Temperature Changes workshop, Graz, Austria

25-28 April 2016
2nd Workshop on stratospheric sulfur and its role in climate, Potsdam, Germany
Abstract submission deadline: 1 February 2016
Registration deadline: 21 April 2016

5 May 2016
Ozone Research – Quo Vadis, Zurich, Switzerland
A 1-day colloquium to honour Prof. Dr. Johannes Staehelin

16-20 May 2016
Atmospheric gravity waves: Sources and effects on weather and climate, NY, USA

24-27 May 2016
Joint GAW/SPARC workshop on UT/LS observations, Geneva, Switzerland

6-10 June 2016
SPARC DynVar workshop & S-RIP meeting, Helsinki, Finland
Abstract submission deadline: 11 March 2016
Registration deadline: 22 April 2016

26-30 September 2016
SPARC QBOi and Tropical S-RIP Workshop “The QBO and its Global Influence – Past, Present and Future”, Oxford, UK
Registration and abstract submission deadline: 31 May 2016

Find all SPARC meetings.

Upcoming SPARC-related meetings

2-4 March 2016
Global Climate Observation: The road to the future, Amsterdam, The Netherlands

5-15 April 2016
Polar Prediction School, Abisko Scientific Research Station, Sweden

30 July – 7 August 2016
41st COSPAR Scientific Assembly, Istanbul, Turkey

31 July – 5 August 2016
Asia Oceania Geosciences Society (AOGS) 13th Annual Meeting, Beijing, China

28 August – 2 September 2016
ISSAOS 2016 summer school on “Advanced Programming Techniques for the Earth System Science”, L’Aquila, Italy

4-9 September 2016
Quadrennial Ozone Symposium, Edinburgh, UK

14-16 September 2016
International Symposium on the Whole Atmosphere (ISWA), Tokyo, Japan

20-22 September 2016
Physics Dynamics Coupling in Weather and Climate Models, Richland, WA, USA

Find more SPARC-related meetings.

Find more meetings organised by the WCRP community.

————————————————————————

Science update

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

January 2016

• Modulation of the boreal wintertime Madden-Julian Oscillation by the stratospheric Quasi-Biennial Oscillation. By C. Yoo and S.-W. Son in Geophysical Research Letters.
• Quantification of relative contribution of Antarctic ozone depletion to increased austral extratropical precipitation during 1979-2013. By K. Bai et al. in the Journal of Geophysical Research: Atmospheres.
• A re-evaluated Canadian ozonesonde record: measurements of the vertical distribution of ozone over Canada from 1966 to 2013. By D.W. Tarasick et al. in Atmospheric Measurement Techniques.
• High solar cycle spectral variations inconsistent with stratospheric ozone observations. By W.T. Ball et al. in Nature Geoscience.
• Comparison of GOME-2/Metop-A ozone profiles with GOMOS, OSIRIS and MLS measurements. By A. Kauppi et al. in Atmospheric Measurement Techniques.
• Observed and modelled tropospheric cold anomalies associated with sudden stratospheric warmings. By I. Lehtonen and A.Y. Karpechko in the Journal of Geophysical Research: Atmospheres.
• Stratospheric polar vortex splits and displacements in the high-top CMIP5 climate models. By W.J. Seviour et al. in the Journal of Geophysical Research: Atmospheres.
• Brewer-Dobson circulation diagnosed from JRA-55. By C. Kobayashi and T. Iwasaki in the Journal of Geophysical Research: Atmospheres.
• Climate model biases in the width of the tropical belt. By N. Davis and T. Birner in the Journal of Climate.
• Sensitivity of polar stratospheric cloud formation to changes in water vapour and temperature. By F. Khosrawi et al. in Atmospheric Chemistry and Physics.
• The Climate-system Historical Forecast Project: Do stratosphere-resolving models make better seasonal climate predictions in boreal winter? By A.H. Butler et al. in the Quarterly Journal of the Royal Meteorological society.
• Ozonesonde profiles from the West Pacific Warm Pool: measurements and validation. By R. Newton et al. in Atmospheric Chemistry and Physics.
• Forced Atmospheric Teleconnections During 1979-2014. By T. Zhang et al. in the Journal of Climate.
• 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.
• 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.

December 2015

• 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.
• 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.
• 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.

November 2015

• Synchronisation of the equatorial QBO by the annual cycle in tropical upwelling in a warming climate. By K. Rajendran et al. in the Quarterly Journal of the Royal Meteorological Society.
• Assessing the role of precursor cyclones on the formation of extreme Greenland blocking episodes and their impact on summer melting across the Greenland ice sheet. By J.T. McLeod and T.L. Mote in the Journal of Geophysical Research: Atmospheres.
• The changing ozone depletion potential of N₂O in a future climate. By L.E. Revell et al. in Geophysical Research Letters.
• Instantaneous longwave radiative impact of ozone: an application on IASI/MetOp observations. By S. Doniki et al. in Atmospheric Measurement Techniques.
• Radiative and Dynamical Influences on Polar Stratospheric Temperature Trends. By D.J. Ivy et al. in the Journal of Climate.
• The hydrological cycle response to cirrus cloud thinning. By J.E. Kristjansson et al. in Geophysical Research Letters.
• Enhanced internal gravity wave activity and breaking over the northeastern Pacific–eastern Asian region. By P. Šácha et al. in Atmospheric Chemistry and Physics.
• Global Responses of Gravity Waves to Planetary Waves during Stratospheric Sudden Warming Observed by SABER. By C.Y. Cullens in the Journal of Geophysical Research: Atmospheres.
• Attributing the forced components of observed stratospheric temperature variability to external drivers. By D. Mitchell in the Quarterly Journal of the Royal Meteorological Society.
• Clouds and the atmospheric circulation response to warming. By P. Ceppi and D.L. Hartman in the Journal of Climate.
• Feeling the pulse of the stratosphere: An emerging opportunity for predicting continental-scale cold air outbreaks one month in advance. By M. Cai et al. in the Bulletin of the American Meteorological Society.
• OMI total column ozone: extending the long-term data record. By R.D. McPeters et al. in Atmospheric Chemistry and Physics.
• Comparison of the CMAM30 data set with ACE-FTS and OSIRIS: polar regions. By D. Pendlebury et al. Atmospheric Chemistry and Physics.
• Tropical sources and sinks of carbonyl sulfide observed from space. By N. Glatthor et al. in Geophysical Research Letters.
• A breath of fresh air. [Editorial]. Nature.
• Wintertime atmospheric response to Atlantic multidecadal variability: effect of stratospheric representation and ocean–atmosphere coupling. By Y. Peings and  G. Magnusdottir in Climate Dynamics.
• Synoptic-Scale Behavior of the Extratropical Tropopause Inversion Layer. By R.P. Kedzierski et al. in Geophysical Research Letters.
• Methyl chloride as a tracer of tropical tropospheric air in the lowermost stratosphere inferred from IAGOS-CARIBIC passenger aircraft measurements. By T. Umezawa et al. in the Journal of Geophysical Research: Atmospheres.
• An assessment of upper-troposphere and lower-stratosphere water vapor in MERRA, MERRA2 and ECMWF reanalyses using Aura MLS observations. By J.H. Jiang et al. in the Journal of Geophysical Research: Atmospheres.
• Methane and nitrous oxide retrievals from MIPAS-ENVISAT. By J. Plieninger et al. in Atmospheric Measurement Techniques.
• Evaluation of methods for gravity wave extraction from middle-atmospheric lidar temperature measurements. By B. Ehard et al. in Atmospheric Measurement Techniques.
• Did the 2011 Nabro eruption affect the optical properties of ice clouds? By A. Meyer et al. in the Journal of Geophysical Research: Atmospheres.
• Seasonal winter forecasts and the stratosphere. By A.A. Scaife et al. in Atmospheric Science Letters.
• Water vapor stratification and dynamical warming behind the sharpness of the Earth’s mid-latitude tropopause. By A.P. Ferreira in the Quarterly Journal of the Royal Meteorological Society.
• Spatial mapping of ground-based observations of total ozone. By K.-L. Chang et al. in Atmospheric Measurement Techniques.
• Solar signals in CMIP-5 Simulations: Effects of Atmosphere–ocean Coupling. By S. Misios et al. in the Quarterly Journal of the Royal Meteorological Society.
• Impacts of high-latitude volcanic eruptions on ENSO and AMOC. By F.S.R. Pausata in Proceedings of the National Academy of Sciences of the United States of America.
• Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer. By M.A. Navarro et al. in Proceedings of the National Academy of Sciences of the United States of America.
• Atlantic hurricane surge response to geoengineering. By J.C. Moore et al. in Proceedings of the National Academy of Sciences of the United States of America.
• Solar geoengineering using solid aerosol in the stratosphere. By D.K. Weisenstein et al. in Atmospheric Chemistry and Physics.
• Stratospheric geoengineering impacts on El Niño/Southern Oscillation. By C.J. Gabriel and A. Robock in Atmospheric Chemistry and Physics.
• Radiative Impacts of the 2011 Abrupt Drops in Water Vapor and Ozone in the Tropical Tropopause Layer. By D.M. Gilford et al. in the Journal of Climate.
• Enhanced long-range forecast skill in boreal winter following stratospheric strong vortex conditions. By O.P. Tripathi et al. in Environmental Research Letters.

Discussion Papers – open for comment: 

• Upper tropospheric CO and O₃ budget during the Asian Summer Monsoon. By B. Barret et al. in Atmospheric Chemistry and Physics Discussions.
• Intercomparison of in situ water vapor balloon-borne measurements from Pico-SDLA H₂O and FLASH-B in the tropical UTLS. By M. Ghysels et al. in Atmospheric Measurement Techniques Discussions.
• The impact of the ozone effective temperature on satellite validation using the Dobson spectrophotometer network. By M.E. Koukouli et al. in Atmospheric Measurement Techniques Discussions.
• The representation of solar cycle signals in stratospheric ozone – Part 1: A comparison of satellite observations. By A. Maycock 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.
• The airborne mass spectrometer AIMS – Part 1: AIMS-H₂O for UTLS water vapor measurements. By S. Kaufmann et al. in Atmospheric Measurement Techniques Discussions.
• The airborne mass spectrometer AIMS – Part 2: Measurements of trace gases with stratospheric or tropospheric origin in the UTLS. By T. Jurkat et al. in Atmospheric Measurement Techniques Discussions.
• Regional and global climate response to anthropogenic SO2emissions from China in three climate models. By M. Kasoar et al. in Atmospheric Chemistry and Physics Discussions.
• Effect of tropical cyclones on the Stratosphere-Troposphere Exchange observed using satellite observations over north Indian Ocean. By M. Venkat Ratnam et al. in Atmospheric Chemistry and Physics Discussions.
• Stratosphere-troposphere exchange in the vicinity of a tropopause fold. By C. Hofmann et al. in Atmospheric Chemistry and Physics Discussions.
• Measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground based observations of ozone and carbon monoxide lines in the 230–250 GHz region: Proof of concept. By D.A. Newnham et al. in Atmospheric Measurement Techniques Discussions.
• On instrumental errors and related correction strategies of ozonesondes: possible effect on calculated ozone trends for the nearby sites Uccle and De Bilt. By R. van Malderen et al. in Atmospheric Measurement Techniques Discussions.
• Vertical wind retrieved by airborne lidar and analysis of island induced gravity waves in combination with numerical models and in-situ particle measurements. By F. Chouza et al. in Atmospheric Chemistry and Physics Discussions.
• A novel technique including GPS radio occultation for detecting and monitoring volcanic clouds. By R. Biondi et al. in Atmospheric Chemistry and Physics Discussions.
• Future Arctic ozone recovery: the importance of chemistry and dynamics. By E.M. Bednarz et al. in Atmospheric Chemistry and Physics Discussions.
• 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.
• 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.
• 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.
• 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.
• Modelled thermal and dynamical responses of the middle atmosphere to EPP-induced ozone changes. By K. Karami et al. in Atmospheric Chemistry and Physics Discussions.
• Summertime nitrate aerosol in the upper troposphere and lower stratosphere over the Tibetan Plateau and the South Asian summer monsoon region. By Y. Gu and H. Liao in Atmospheric Chemistry and Physics Discussions.
• Ozone changes under solar geoengineering: implications for UV exposure and air quality. By P.J. Nowack et al. in Atmospheric Chemistry and Physics Discussions.
• On the climatological probability of the vertical propagation of stationary planetary waves. By K. Karami et al. in Atmospheric Chemistry and Physics Discussions.
• Characteristics of gravity waves generated in a baroclinic instability simulation. By Y.-H. Kim et al. in Atmospheric Chemistry and Physics Discussions.
• A Joint data record of tropospheric ozone from Aura-TES and MetOp-IASI. By H. Oetjen et al in Atmospheric Chemistry and Physics Discussions.
• Carbon monoxide climatology derived from the trajectory mapping of global MOZAIC-IAGOS data. By M. Osman et al. in Atmospheric Chemistry and Physics Discussions.
• Climatic impacts of stratospheric geoengineering with sulfate, black carbon and titania injection. By A.C. et al. in Atmospheric Chemistry and Physics Discussions.
• Drivers of changes in stratospheric and tropospheric ozone between year 2000 and 2100. By A. Banerjee et al. in Atmospheric Chemistry and Physics Discussions.
• Upper-tropospheric humidity changes under constant relative humidity. By K. Gierens and K. Eleftheratos in Atmospheric Chemistry and Physics Discussions.

Find older Science Updates at >http://www.aparc-climate.org/news/

————————————————————————————

For feedback or input to the next eNews edition please contact:
office@sparc-climate.org

SPARC Office
c/o ETH Zurich
Institute for Atmospheric and Climate Science (IAC)
Building CHN
Universitaetsstrasse 16
CH-8092 Zurich
Switzerland
www.sparc-climate.org