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

New Studies Highlight Challenge of Meeting Paris Agreement Climate Goals. Press release in Earth & Space Science News (EOS).

Trials, errors and improvements in co-production of climate services. By E.W. Kolstad et al. in the Bulletin of the American Meteorological Society.

The Influence of Mesoscale Atmospheric Circulation on Spitsbergen Air Temperature in Periods of Arctic Warming and Cooling. By E.B. Łupikasza and T. Niedźwiedź in the Journal of Geophysical Research: Atmospheres.

Meteorological Source Variability in Atmospheric Gravity Wave Parameters Derived From a Tropical Infrasound Station. By G.J. Marlton et al. in the Journal of Geophysical Research: Atmospheres.

Global 5G wireless networks threaten weather forecasts. By A. Witze; News article in Nature.

Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell. By H. Yang et al. in Atmospheric Chemistry and Physics.

Discussion papers – open for comment:

Impact of poleward heat and moisture transports on Arctic clouds and climate simulation. By E.-H. Baek et al. in Atmospheric Chemistry and Physics.

Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016. By A. Marsing et al. in Atmospheric Chemistry and Physics.

The abstract submission deadline for the 2019 CCMI Science Workshop in Hong Kong August 7 – 9th is on April 30th.

You can find more information and a link to the IGAC Event Abstract Submission System to register and submit abstracts on the workshop webpage:
http://www.cuhk.edu.hk/sci/essc/tgabi/CCMI-WS/ccmi_2019_hongkong_welcome.html

The workshop organizers are currently working on organizing a list of keynote and invited speakers that will motivate our thinking across a wide range of topics that connect with chemistry-climate modelling and would very much like you to join us in Hong Kong.

The second joint AerChemMIP / RFMIP / PDRMIP Workshop in support of CMIP

New Science from CMIP6 multi-model composition-forcing-response experiments

Download third announcement (PDF, 0.3 MB)

June 11th – 14th, 2019
Room A006, Friend Center, 65 Olden St, Princeton, New Jersey 08540, USA

Deadlines:

Abstract submission: April 26 2019,
Registration: May 2 2019

Workshop Goals:

Discuss the use of AerChemMIP, RFMIP, and PDRMIP integrations and diagnostics to advance our understanding of composition, forcing and feedback processes for better constraints on past changes and future projections.

Below are few examples of questions we are interested in discussing, with a full list provided on the website:

• How do the different short- and long-lived constituents contribute to the regional trends in radiative forcing?
• How has atmospheric composition and oxidizing capacity evolved in response to natural and anthropogenic drivers?
• What are the implications of composition changes for air quality and radiative forcing?
• What is the response of natural emissions to anthropogenic influences?
• What are the local and remote temperature and precipitation responses induced from changes in composition?
• How does model diversity in radiative forcing translate to diversity in precipitation and temperature?
• What is the role of uncertainty in radiative transfer parametrizations in the calculation of radiative forcing?
• What are the robust model responses to tightly specified aerosol forcing from preindustrial to present day?

Workshop Format:

The workshop will run from 9:00am on Tuesday 11th June and end at 1:00pm on Friday June 14th. The format will include science presentations (oral and poster) and discussion sessions.

Scientific Organizing Committee:

Bill Collins (U Reading), Stephanie Fiedler (MPI), Piers Forster (U Leeds), Jean-François Lamarque (NCAR), Gunnar Myhre (CICERO), Vaishali Naik (GFDL), David Paynter (GFDL), Robert Pincus (U Colorado), V. Ramaswamy (GFDL), Michael Schulz (Met Norway), and Bjorn Stevens (MPI)

Local Organizing Committee:

David Paynter, Vaishali Naik, and V. Ramaswamy

More information:
AerChemMIP (Aerosols and Chemistry MIP)
RFMIP (Radiative Forcing MIP)
PDRMIP (Precipitation Driver Response MIP)

workshop webpage

Abstract submission and registrations are open for the ICRC-CORDEX 2019 conference that will take place from 14-18 October 2019 in Beijing, China.

The WCRP CORDEX International Conference on Regional Climate (ICRC-CORDEX) series brings together the international regional climate research community. It focuses on high-resolution climate information; applications to vulnerability, impacts and adaptation; as well as the full spectrum of potential end users of regional climate information. After successful ICRC conferences in 2011 (Trieste, Italy), 2013 (Brussels, Belgium) and 2016 (Stockholm, Sweden), the international downscaling community is now invited to Beijing, China, to foster science and application of regional climate downscaling through global partnerships.

The deadline for abstract submissions is April 30, 2019.

Find website

Download flyer

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

Simulating the atmospheric response to the 11-year solar cycle forcing with the UM-UKCA model: the role of detection method and natural variability. By E.M. Bednarz et al. in Atmospheric Chemistry and Physics.

Deriving stratospheric age of air spectra using an idealized set of chemically active trace gases. By M. Hauck et al. in Atmospheric Chemistry and Physics.

Foresight must guide geoengineering research and development. By A. Lenton et al. in Nature Climate Change.

Time of steady climate change. By M. Lickley, B.B. Cael, and S. Solomon in the Geophysical Research Letters.

A new method to study inhomogeneities in climate records: Brownian Motion or Random Deviations? By R. Lindau and V. Venema in the International Journal of Climatology.

Is interactive ozone chemistry important to represent polar cap stratospheric temperature variability in Earth-System Models? By H.E. Rieder et al. in the Environmental Research Letters.

Precursory signals of East Asian winter cold anomalies in stratospheric planetary wave pattern. By L. Song and R. Wu in Climate Dynamics.

New climate models forecast a warming surge. By P. Voosen in Science.

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

Timescale Decomposition of Climate and Correction of Variability Using Synthetic Samples of Stable Distributions. By M. Gomez-Garcia et al. in Water Resources Research.

The global diabatic circulation of the stratosphere as a metric for the Brewer–Dobson circulation. By M. Linz et al. in Atmospheric Chemistry and Physics.

Orographic Primary and Secondary Gravity Waves in the Middle Atmosphere from 16‐year SABER Observations. By X. Liu et al. in the Geophysical Research Letters.

Revised records of atmospheric trace gases CO2, CH4, N2O, and δ13C-CO2 over the last 2000 years from Law Dome, Antarctica. By M. Rubino et al. in Earth System Science Data.

Gravity waves in global high‐resolution simulations with explicit and parameterized convection. By C.C. Stephan et al. in the Journal of Geophysical Research: Atmospheres.

On the fine vertical structure of the low troposphere over the coastal margins of East Antarctica. By É. Vignon, O. Traullé, and A. Berne in Atmospheric Chemistry and Physics.

Interannual variations of the rainy season withdrawal of the monsoon transitional zone in China. By W. Zhao et al. in Climate Dynamics.

New US CLIVAR Variations edition published:

The 2019 spring edition of Variations is themed “Stratosphere-troposphere coupling across timescales,” with guest editor Amy Butler, NOAA Earth System Research Laboratory.

While US CLIVAR has traditionally focused on ocean-atmosphere coupling and its role on climate variability, in this edition of Variations we examine the coupling between the two lowest layers of the atmosphere, the troposphere and the stratosphere.

Articles featured in this edition:

• Connections between the stratosphere and synoptic variability (Attard and Coy)
• Stratospheric pathway of the MJO and ENSO for boreal winter surface climate (Garfinkel)
• Links between autumn snow cover and sea ice extent and Northern Hemisphere wintertime climate variability (Furtado)
• The Quasi-Biennial Oscillation and its influences at the surface (Alexander and Holt)
• Decadal variability and connections to the stratosphere: The role of solar variability (Hood and McCormack)
• The role of the stratosphere in future mid-latitude climate projections (Simpson, Hitchcock, Seager, and Wu)

To learn more about this topic, join us for a webinar on April 11 at 2:00 pm EDT, featuring contributors to this edition.

The SPARC community sorrowfully announces the passing of Dr. William Lahoz on Tuesday April 2, in Madrid SP from cancer. He is survived by his  wife, Paz Carrero, and daughters Carolina (20) and Natalia (15).

Condolences may be sent to 

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

Ground-based ozone profiles over central Europe: incorporating anomalous observations into the analysis of stratospheric ozone trends. By L. Bernet et al. in Atmospheric Chemistry and Physics.

Modelling spatially correlated observation errors in variational data assimilation using a diffusion operator on an unstructured mesh. By O. Guillet et al. in the Quarterly Journal of the Royal Meteorological Society.

Recent Weakening in the Stratospheric Planetary Wave Intensity in Early Winter. By D. Hu, Y. Guo, and Z. Guan in the Geophysical Research Letters.

Evaluating the Brewer–Dobson circulation and its responses to ENSO, QBO, and the solar cycle in different reanalyses. By J. Rao et al. in Earth and Planetary Physics.

The climatology of the Brewer–Dobson circulation and the contribution of gravity waves. By K. Sato and S. Hirano in Atmospheric Chemistry and Physics.

Nonlinear latitudinal transfer of wave activity in the winter stratosphere. By R.K. Scott in the Quarterly Journal of the Royal Meteorological Society.

Modification of potential vorticity near the tropopause by non-conservative processes in the ECMWF model. By E. Spreizer et al. in the Journal of the Atmospheric Sciences.

Double cores of the Ozone Low in the vertical direction over the Asian continent in satellite data sets. By Z. Tang et al. in Earth and Planetary Physics.

Latitudinal and topographical variabilities of free atmospheric turbulence from high‐resolution radiosonde datasets. By J. Zhang et al. in the Journal of Geophysical Research: Atmospheres.

A multi‐location joint field observation of the stratosphere and troposphere over the Tibetan Plateau. By JQ Zhang et al. in Earth and Planetary Physics.

Decadal variations in the winter Beaufort High and the stratospheric polar vortex. By M. Zhang, W. Perrie, and Z. Long in the Geophysical Research Letters.

We are pleased to announce that the website for the 2019 CCMI Science Workshop in Hong Kong is now open! In addition, registration for both the workshop and the summer school, and abstract submission is now open.

Find webpage

On the website you can find a link to the IGAC Event Abstract Submission System that is being used as well as further details.

Workshop dates:

CCMi summer school: 4 – 6 August
CCMi science workshop: 7 – 9 August

on the campus of The Chinese University of Hong Kong (CUHK).

Importand deadlines:

Note that the registration website has an incorrect deadline for abstract submission and summer school application and this will be corrected soon.

The CCMi activity leaders are looking forward to seeing you in Hong Kong in August for tropical humidity, interesting discussions of new science including what we have learned from CCMI-1, and where we would like to go with phase two of CCMI.