Category Archives: News

SPARC Science update: 6 January – 12 January

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

 

Short-term stratospheric ozone fluctuations observed by GROMOS microwave radiometer at Bern. By L. Moreira, K. Hocke, and N. Kämpfer in Earth, Planets and Space.

Intercomparison of AIRS and HIRDLS stratospheric gravity wave observations. By C.I. Meyer et al. in Atmospheric measurement Techiques.

 

 

Discussion papers – open for comment

The Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP): Motivation and experimental design. By C. Timmereck et al. in Geoscientific Model Development.

Interannual variability of the gravity wave drag – vertical coupling and possible climate links. By P. Sacha, J. Miksovsky, and P. Pisoft in Earth System Dynamics.

SPARC Science update: 23 December – 5 January

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

 

 

First Successful Hindcasts of the 2016 Disruption of the Stratospheric Quasibiennial Oscillation. By S. Watanabe et al. in the Geophysical Research Letters.

On the climate impacts of upper tropospheric and lower stratospheric ozone. By Y. Xia, Y. Huang, and Y. Hu in the Journal of Geophysical Research: Atmospheres.

Convectively-driven tropopause-level cooling and its influences on stratospheric moisture. By J. Kim, W.J. Randel, and T. Birner in the Journal of Geophysical Research: Atmospheres.

The South Georgia Wave Experiment (SG-WEX): radiosonde observations of gravity waves in the lower stratosphere. Part I: Energy density, momentum flux and wave propagation direction. By T. Moffat-Griffin et al. in the Quaterly Journal of the Royal Meteorological Society.

 

 

Discussion papers – open for comment

Widespread polar stratospheric ice clouds in the 2015/2016 Arctic winter – Implications for ice nucleation. By C. Voigt et al. in Atmospheric Chemistry and Physics.

GRACILE: A comprehensive climatology of atmospheric gravity wave parameters based on satellite limb soundings. By M. Ern et al in Earth System Science Data.

 

SPARC Science update: 15 – 22 December

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

 

MJO-related intraseasonal variation in the stratosphere: Gravity waves and zonal winds. By M.J. Alexander et al. in the Journal of Geophysical Research: Atmospheres.

How long do satellites need to overlap? Evaluation of climate data stability from overlapping satellite records. By E.C. Weatherhead et al. in Atmospheric Chemistry and Physics.

A method to encapsulate model structural uncertainty in ensemble projections of future climate: EPIC v1.0. By J. Lewis et al. in Geoscientific Model Development.

BATAL: The Balloon measurement campaigns of the Asian Tropopause Aerosol Layer. By J.-P. Vernier et al. in the Bulletin of the American Meteorological Society.

Vacancy announcement: WMO Director of Research

The World Meteorological Organisation (WMO) has advertised the position of WMO Chief Scientist / Director of Research for the World Climate Research Programme (WCRP), the World Weather Research Programme (WWRP) and the Global Atmosphere Watch (GAW).

Find vacancy. The application deadline is 31 January 2018.

SPARC Science Update: 08 – 14 December

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


Five priorities for weather and climate research. By Ø. Hov et al. in Nature.

Changing transport processes in the stratosphere by radiative heating of sulfate aerosols. By U. Niemeier and H. Schmidt in Atmospheric Chemistry and Physics.

Mountain waves modulate the water vapor distribution in the UTLS. By R. Heller et al. in Atmospheric Chemistry and Physics.

Testing the sensitivity of the extratropical response to the location, amplitude, and propagation speed of tropical convection. By M. Goss and S.B. Feldstein in the Journal of Atmospheric Sciences.

Surface impacts of the Quasi Biennial Oscillation. By L.J. Gray et al. in Atmospheric Chemistry and Physics Discussions.

Observations of the Breakdown of Mountain Waves over the Andes Lidar Observatory at Cerro Pachon on July 8/9, 2012. By J.H. Hecht et al. in the Journal of Geophysical Research: Atmospheres.

An even longer road to recovery? By J. Fahrenkamp-Uppenbrink in Science.

Improving variational data assimilation through background and observation error adjustments. By J.P Mattern, C.A. Edwards, and A.M. Moore in the Monthly Weather Review.

Climatology and interannual variability of dynamic variables in multiple reanalyses evaluated by the SPARC Reanalysis Intercomparison Project (S-RIP). By C.S. Long et al. in Atmospheric Chemistry and Physics.

Mechanisms Governing Interannual Variability of Stratosphere to Troposphere Ozone Transport. By J.R. Albers et al. in the Journal of Geophysical Research: Atmospheres.

Tropospheric Ozone Assessment Report: Open comment period

The Tropospheric Ozone Assessment Report (TOAR), a current IGAC activity, is available online for open comment.

The author team includes Gina Mills, Håkan Pleijel, Christopher S. Malley, Baerbel Sinha, Owen Cooper, Martin Schultz, Howard S. Neufeld, David Simpson, Katrina Sharps, Zhaozhong Feng, Giacomo Gerosa, Harry Harmens, Kazuhiko Kobayashi, Pallavi Saxena, Elena Paoletti, Vinayak Sinha, and Xiaobin Xu.

Find information on TOAR and the open-comment papers. Note that the open-comment period closes on 7 January 2018.

SPARC Science Update: 1 – 8 December

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

The South Georgia Wave Experiment (SG-WEX) – a means for improved analysis of gravity waves and low-level wind impacts generated from mountainous islands. By D.R. Jackson et al. in the Bulletin of the American Meteorological Society.

Characterizing stratospheric polar vortex variability with computer vision techniques. By Z.D. Lawrence and G.L. Manney in the Journal of Geophysical Research: Atmospheres.

Multi-year composite view of ozone enhancements and stratosphere-to-troposphere transport in dry intrusions of northern hemisphere extratropical cyclones. By L. Jaeglé et al. in the Journal of Geophysical Research: Atmospheres.

Sensitivities of modelled water vapour in the lower stratosphere: temperature uncertainty, effects of horizontal transport and small-scale mixing. By L. Poshyvailo et al. in Atmospheric Chemstry and Physics.

Large-Scale Tropospheric Transport in the Chemistry Climate Model Initiative (CCMI) Simulations. By C. Orbe et al. in Atmospheric Chemistry and Physics.