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

Influence of the El Niño–Southern Oscillation on entry stratospheric water vapor in coupled chemistry–ocean CCMI and CMIP6 models. By C.I. Garfinkel et al. in Atmospheric Chemistry and Physics.

The politics and governance of research into solar geoengineering. By D. McLaren and O. Corry in WIREs Climate Change.

How Atmospheric Chemistry and Transport Drive Surface Variability of N2O and CFC‐11. By D.J. Ruiz et al. in the Journal of Geophysical Research: Atmospheres.

Potential of Mid‐tropospheric Water Vapor Isotopes to Improve Large‐Scale Circulation and Weather Predictability. By K. Toride et al. in the Geophysical Research Letters.

The unusual stratospheric Arctic winter 2019/20: Chemical ozone loss from satellite observations and TOMCAT chemical transport model. By M. Weber et al. in the Journal of Geophysical Research: Atmospheres.

US CLIVAR seeks comments and input from the science community on the draft white paper “Summarizing Weather, Climate, and Earth System Observational Data Sharing Needs for Research and Education.”

The document is intended to (1) raise community awareness of US federal agency decisions to restrict access and sharing of observational data sets through recently established commercial data buys and (2) articulate data needs and benefits of federal commitments to free, open, and unrestricted observational data access and exchange for scientific research and education.

Developed by a writing team charged by the US CLIVAR Scientific Steering Committee, the draft white paper incorporates inputs received through consultation with members of the US CLIVAR organization as well as feedback from members of the scientific community collected through two Town Halls. Suggestions from this open review period will be considered in preparing the final publication.

Download the draft white paper and enter your comments here (Google d oc). The document is intentionally concise, so it is a quick read at just eight pages in length. Please provide comments and suggest text changes on the current draft by Monday, March 15, 2021.

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

Model physics and chemistry causing intermodel disagreement within the VolMIP-Tambora Interactive Stratospheric Aerosol ensemble. By M. Clyne et al. in Atmospheric Chemistry and Physics.

Quantifying the influence of short-term emission reductions on climate. By J.C. Fyfe et al. in Science Advances.

Sensitivity of QBO teleconnection to model circulation biases. By A.Y. Karpechko, N.L. Tyrell, and S. Rast in the Quarterly Journal of the Royal Meteorological Society.

Discussion papers – open for comment:

Contributions of equatorial planetary waves and small-scale convective gravity waves to the 2019/20 QBO disruption. By M.-J. Kang and H.-Y. Chun in Atmospheric Chemistry and Physics.

Virtual Meeting June 7-10, 2021

In coordination with the NASA Living With a Star Program, the 2nd Eddy Cross Disciplinary Symposium will be held virtually June 7-10, 2021. The goal of this meeting is to bring together diverse groups from data science, Earth and space sciences.

The aim is to identify and promote novel opportunities for budding scientists, to take advantage of powerful new techniques from computational and data science, including machine learning and Al techniques.

Join a community of scientific facilitators for an uncommon opportunity to advance cross-disciplinary conversations and research into the areas of Sun-Earth relations, weather-climate connections, and novel star-planet interactions.

A current list of speakers includes:

• Justin Kasper: University of Michigan 
• Fernando Perez: University of California, Berkeley
• Sophie Murray:  Trinity College, University of Dublin
• Shannon Curry: University of California, Berkeley

For workshop information and to register (no registration fee this year), please visit https://cpaess.ucar.edu/meetings/2nd-eddy-cross-disciplinary-symposium.  

The program, speakers, poster presentations, and other relevant information will be provided on the meeting registration site and in future announcements.  

The Eddy Cross Disciplinarian Symposium is coordinated by the University Corporation for Atmospheric Research and the NASA Living With a Star Program.

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

Global modeling studies of composition and decadal trends of the Asian Tropopause Aerosol Layer. By A. Bossolasco et al. in Atmospheric Chemistry and Physics.

The spring transition of the North Pacific jet and its relation to deep stratosphere-to-troposphere mass transport over western North America. By M.L. Breeden et al. in Atmospheric Chemistry and Physics.

Summer Monsoons: Regional Manifestations of a Global System. By R. Green, S. Bordoni, and D. Battisti in Earth and Space Science News; Editor’s Vox.

Discussion papers – open for comment:

Arctic on the verge of an ozone hole? By J. Kuttippurath et al. in Atmospheric Chemistry and Physics.

Ozone super recovery cancelled in the Antarctic upper stratosphere. By V. Maliniemi et al. in Atmospheric Chemistry and Physics.

Calibrating a global atmospheric chemistry transport model using Gaussian process emulation and ground-level concentrations of ozone and carbon monoxide. By E. Ryan and O. Wild in Geoscientific Model Development.

Background:

The Water Vapour Climate Change Initiative (WV_cci) is a project of the European Space Agency (ESA) with the overall goal to generate climate data records (CDRs) of atmospheric water vapour for use in climate applications. The project develops, validates, and releases quality-controlled, long-term CDRs of total column water vapour (TCWV) and water vapour profiles in the stratosphere (2D), as well as a five-year data record of water vapour profiles in the troposphere and lower stratosphere (3D).

Objectives:

The aim of the workshop is to bring together the broader water vapour community, including those interested in the generation of water vapour CDRs and data users (such as climate modellers and NWP researchers) in order to discuss the most recent scientific applications and challenges in processing and using water vapour CDRs. Topics of the workshop include:
• Discuss challenges related to the generation of water vapour CDRs.
• Show-case climate user applications of water vapour CDRs (with focus on WV_cci CDRs).
• Collect and update user requirements for atmospheric water vapour.
• Present and discuss results from climate analysis, climate applications, and process studies using water vapour CDRs.

Format:

The workshop will be carried out online and will consist of a series of presentations and discussion blocks. It is foreseen to have the workshop in the week 14–18 June 2021, at 14– 18 CEST. The exact number of days will depend on the number of submitted abstracts.

Relevant dates:

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

The Influence of Obliquely Propagating Monsoon Gravity Waves in the Southern Polar Summer Mesosphere after Stratospheric Sudden Warmings in the Winter Stratosphere. By D. Alexandre et al. in the Journal of Geophysical Research: Atmospheres.

Variation in the Holton–Tan effect by longitude. By D. Elsbury, Y. Peings, and G. Magnusdottir in the Quarterly Journal of the Royal Meteorological Society.

Improved Circulation in the Northern Hemisphere by Adjusting Gravity Wave Drag Parameterisations in Seasonal Experiments with ICON‐NWP. By R. Köhler et al. in Earth and Space Science.

Potential of future stratospheric ozone loss in the midlatitudes under global warming and sulfate geoengineering. By S. Robrecht et al. in Atmospheric Chemistry and Physics.

Aerosols in current and future Arctic climate. By J. Schmale, P. Zieger, and A.M.L. Ekman in nature: climate Change.

Sensitivity of stratospheric water vapour to variability in tropical tropopause temperatures and large-scale transport. By J.W. Smith et al. in Atmospheric Chemistry and Physics.

Quasi-coincident observations of polar stratospheric clouds by ground-based lidar and CALIOP at Concordia (Dome C, Antarctica) from 2014 to 2018. By M. Snels 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).

Observational validation of parameterized gravity waves from tropical convection in the Whole Atmosphere Community Climate Model (WACCM). By M.J. Alexander et al. in the Journal of Geophysical Research: Atmospheres.

Evaluation of polar stratospheric clouds in the global chemistry–climate model SOCOLv3.1 by comparison with CALIPSO spaceborne lidar measurements. By M. Steiner et al. in Geoscientific Model Development.

Is Turning Down the Sun a Good Proxy for Stratospheric Sulfate Geoengineering? By D. Visioni, D.G. MacMartin, and B. Kravitz in the Journal of Geophysical Research: Atmospheres.

Discussion papers – open for comment:

Why we need radar, lidar, and solar radiance observations to constrain ice cloud microphysics. By F. Ewald et al. in Atmospheric Measurement Techniques.

The Global Climate Observing System (GCOS) is inviting everyone interested to take part in a public review of the draft of their 2021 Status Report.

This important report provides an overview of the adequacy of the observing system as a whole and considers the status of observations of each Essential Climate Variable (ECV).  It covers atmospheric, oceanic, terrestrial, cryospheric and hydrological variables.  Its publication will be followed by an implementation plan in 2022 that will address gaps and new and developing needs.  The report will be considered by the UNFCCC, sponsors of GCOS and other international observing systems. 

The public review of the 2021 GCOS Status Report is open to all.  Your input will help shape the global climate observing system in the next 6 years.  Comments will be considered by the GCOS expert panels (atmosphere, ocean and terrestrial as appropriate) who will adjust the document accordingly.

After addressing all the comments, the revised draft will be considered by the GCOS Steering Committee for approval and publication.  GCOS aims to publish this report in July 2021 and submit it for consideration by the UNFCCC and the GCOS sponsors. 

While some information is asked about reviewers this will only be used to check if there is a good regional and gender balance and range of expertise. Reviewers submitting comments will be acknowledged by name and affiliation.

The review can be accessed at: https://apps.ipcc.ch/comments/gcos/pd/register.php

Registration is live now, and the review will start on the 15 February.

Documents are available to download from 12 February. The deadline for comments is 2 April 2021.

A Scientific Officer position at the WCRP Secretariat is available

Under the overall guidance of the Director of the Science and Innovation (D/SI) and the direct supervision of the Head of the World Climate Research Division (H/WCR), the Scientific Officer will perform the following duties:

1.  Provide overall programmatic support to key World Climate Research Programme (WCRP) science activities including, but not limited to, those covering the WCRP Science Objective on “Fundamental understanding of the climate system”;
2. Support the Head of the Division with regard to the development and realization of the WCRP Implementation and Transition process;
3. Work closely with the staff in the Division to jointly meet key objectives;
4. Coordinate with the WCRP International Project Offices, as necessary;
5. Work with relevant activities to provide regular budget and funding updates, and assist the Head of Division in identifying possible sources of funding;
6. Liaise and coordinate with the World Weather Research Programme (WWRP) and the Global Atmosphere Watch (GAW) in the SI Department as well as other activities as appropriate (e.g., ensuring connections with WMO Technical Commissions, the Research Board and other WCRP co-sponsored activities);
7. Maintain current knowledge of climate research progress relevant to the WCRP;
8. Work with other WMO Departments and WCRP’s co-sponsors to identify and support opportunities for early career, underrepresented, and developing country researchers;
9. Represent the WCRP (and when appropriate the SI Department) in national and international meetings, as required;
10. Under the guidance of the Head of the Division, work with the WCRP co-sponsors;
11. Carry out other relevant duties as required.

• To know more, click here
• Deadline for application: 11th March 2021