All posts by Mareike@WCRP/SPARC

SPARC Science update: 3 February – 9 February

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

 

Rossby Wave Propagation into the Northern Hemisphere Stratosphere: The Role of Zonal Phase Speed. By D.I.V. Domeisen, O. Martius, and B. Jiménez-Esteve in the Geophysical Research Letters.

Seasonal persistence of circulation anomalies in the Southern Hemisphere stratosphere, and its implications for the troposphere. By N.J. Byrne and T.G. Shepherd in the Journal of Climate.

Weakly or strongly nonlinear mesoscale dynamics close to the tropopause? By Q. Li and E. Linborg in the Journal of the Atmospheric Sciences.

Global patterns of declining temperature variability from the Last Glacial Maximum to the Holocene. By K. Rehfeld, T. Münch, S.L. Ho, and T. Laepple in Nature.

Stratospheric Smoke With Unprecedentedly High Backscatter Observed by Lidars Above Southern France. By S.M. Khaykin et al. in the Geophysical Research Letters.

Satellite Observations of Stratospheric Gravity Waves Associated with the Intensification of Tropical Cyclones. By L. Hoffmann, X. Wu, and M.J. Alexander in the Geophysical Research Letters.

Mountain Wave Propagation under Transient Tropospheric Forcing A DEEPWAVE Case Study. By T.C. Portele et al. in the Monthly Weather Review.

 

 

SPARC Science update: 20 January – 2 February

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

 

Optimizing the definition of a sudden stratospheric warming. By A.H. Butler and E.P. Gerber in the Journal of Climate.

Ten Year Analysis of Tropopause-Overshooting Convection Using GridRad Data. By J.W. Cooney et al. in the Journal of Geophysical Research: Atmospheres.

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

Climate impact of idealized winter polar mesospheric and stratospheric ozone losses as caused by energetic particle precipitation. By K. Meraner and H. Schmidt in Atmospheric Chemistry and Physics.

 

Discussion papers – open for comment

Volcanic impact on the climate – the stratospheric aerosol load in the period 2006–2015. By J. Friberg et al. in Atmospheric Chemistry and Physics Discussions.

Size-Resolved Stratospheric Aerosol Distributions after Pinatubo Derived from a Coupled Aerosol-Chemistry-Climate Model. By T. Sukhodolev et al. in Geoscientific Model Development.

 

 

 

ISSI/ISSI-BJ Joint Call for Proposals 2017 for International Teams

The International Space Science Institute (ISSI) in Bern, Switzerland, and ISSI-BJ in Beijing, China, invite proposals for establishing International Teams to conduct on their premises research activities in Space Sciences, based on the interdisciplinary analysis and evaluation of data from spacecraft, and possible integration with ground data and theoretical models. The Call is open to scientists of any nationality, actively involved in the following research fields:

1. Space Sciences (Magnetospheric and Space Plasma Physics, Solar-Terrestrial Sciences, Solar and Heliospheric Physics, Planetary Sciences, Astrobiology, Cosmology, Astrophysics, and Fundamental Physics in Space)

2. Earth Sciences using space data

Deadlines for proposals:

Letter of Intent due:                  February 20, 2018

Online proposal Submission:      March 28, 2018

More details: ISSI_ISSI-BJ_annual_call2018

1st Announcement: Workshop: “Tri-MIP-Athlon”

A Joint AerChemMIP / RFMIP / PDRMIP Workshop in Support of CMIP6

Dates: 11-15 June 2018

Venue: University of Reading, Reading, UK

Theme: New Science opportunities from CMIP6 multi-model forcing response experiments.

The Joint workshop will focus on the use of multi-model experiments to quantify the effective radiative forcing driven by changes in composition and the consequent climate responses. Data from idealised experiments are already available from PDRMIP. For the first time in CMIP, forcing data from all the CMIP6 climate models will be generated under the RFMIP protocols, and further broken down by forcing component in RFMIP and AerChemMIP.

Workshop goals:

  1. To discuss RFMIP and AerChemMIP experiments and plan analyses
  2. To discuss the scientific results coming from PDRMIP and related analyses and the potential for new science from CMIP6 on composition, forcing and response.

This workshop will be of interest to all those analysing/planning to analyse model forcing and response. Attendance from modelling centres contributing to RFMIP or AerChemMIP experiments is encouraged.

Find more details in the 1st Announcement (PDF)

SPARC Science update: 13 January – 19 January

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

 

Probabilities of causation of climate changes. By A. Hannart and P. Naveau in the Journal of Climate.

Global Average Temperatures in 2017 Continued Upward Trend. By. J. Wendel (Editorial) in Earth & Space Science News (EOS).

A closer look at the relationships between meridional mass circulation pulses in the stratosphere and cold air outbreak patterns in northern hemispheric winter. By Y. Yu et al. in Climate Dynamics.

Effect of gravity waves from small islands in the Southern Ocean on the Southern Hemisphere atmospheric circulation. By C.I. Garfinkel and L.D. Oman in the Journal of Geophysical Research: Atmospheres.

Process-level improvements in CMIP5 models and their impact on tropical variability, the Southern Ocean, and monsoons. By A. Laurer et al. in Earth System Dynamics.

The GEWEX Water Vapor Assessment archive of water vapour products from satellite observations and reanalyses. By M. Schröder et al. in Earth System Science Data.

 

Discussion papers – open for comment

Reanalysis intercomparisons of stratospheric polar processing diagnostics. By Z.D. Lawrence, G.L. Manney, and K. Wargan in Atmospheric Chemistry and Physics Discussions

 

 

 

 

 

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.