Please visit the Cross-Cutting Activities page for more information on upcoming activities co-sponsored by the Atmosphere Working Group.
When: 18-20 September 2019 | Where: Oslo (Norway)
Contact: Julia Schmale
Winter Polar Vortex
Quantifying the Indirect Effect: from Sources to Climate Effects of Natural and Transported aerosol in the Arctic (QuIESCENT Arctic) Workshop
The QuIESCENT Arctic workshop was initiated by the PACES (air Pollution in the Arctic: Climate, Environment, and Societies) project, with support of the International Arctic Science Committee (IASC) Atmosphere Working Group, and was also endorsed by the International Association for Meteorology and Atmospheric Sciences (IAMAS, via both the International Commission on Polar Meteorology and the International Commission on Clouds and Precipitation) and International Global Atmospheric Chemistry (IGAC). Through discussions, the workshop identified the need to improve communication between the observing and modelling communities and to carry momentum forward to future workshops, activities, and projects targeting this topic.
• Arctic aerosol-cloud interactions are poorly understood, yet it is difficult to disentangle these processes and identify key drivers from others which influence clouds (e.g. boundary layer structure, moisture transport).
• We need more measurements of the vertical structure of the boundary layer, clouds, and aerosols, particularly during the winter, to improve our understanding of the Arctic indirect effect and quantify associated processes better in numerical models.
• Efforts are needed to improve communication and collaboration between the observing and modelling communities to facilitate better knowledge transfer to high-resolution atmospheric models and up-scaling to global circulation models.
For more information see the QuIESCENT Workshop website.
MOSAiC Final Implementation Workshop
When: 11 - 15 March 2019 | Where: Postdam (Germany)
Contact: Annette Rinke
230 scientists of the MOSAiC (Multidisciplinary Drifting Observatory of the Study of Arctic Climate) community participated in the final big workshop before the MOSAiC expedition starts in September 20th 2019. The workshop focused on the implementation of the expedition and to inform the participants of the cruise about logistical details. The schedule for the 6 legs and the exchanges of scientists and crew are finalized, including the announcement that Leg 6 will be extended and finishes on October 14th 2020 in Bremerhaven (Germany). With only 6 months until Polarstern leaves Tromsø, most of the cruise leader and, co-cruise leaders introduced themselves and the participants of each leg are defined. The deadlines for fright issues, training courses and medical exams were announced. Several new developments were announced, like the MOSAiC data policy, the media concept introducing the Progressive Web App (launched just before the start of the MOSAiC expedition) and education concept including the MOSAiC School onboard of Fedorov.
Scientifically, the MOSAiC workshop offers the last opportunity for the community to meet within their MOSAiC Teams (Atmosphere, Sea Ice, Ocean, Bio-Geochemistry and Remote Sensing) in addition to cover the MOSAiC cross-cutting topics (Aircraft Operation, Remote Sensing and Modeling). Besides, the workshop offers time slots for individual small meetings to come together in small groups and discuss about very detailed and special topics. Still open questions concerning the scientific set-up during the expedition and it’s organize and implementation could be answered. Responsible scientist for each leg has to be found to maintain unattended instruments onboard Polarstern, in the ice camp and the distributed network.
In addition, the MOSAiC workshop aims to bring together the modelling and observation community. Improving sea ice, weather, regional and global climate models and their parameterizations is the overarching goal of the MOSAiC project. Therefore, one day was dedicated to deal with modelling activity before and during the expedition to support the expedition with forecasts and to coordinate the modelling activity after the expedition to fulfil the overarching goal. To achieve this aim, the modeling day focus on bridging observations and large scale modeling.
Further information about the MOSAiC expedition and the whole project can be found on the Webpage (www.mosaic-expedition.org).
• Expedition extended and ends on October 14th 2020 in Bremerhaven
• Introduction of the cruise leader and co-cruise leader for almost all legs
• Both modelers and observers met for one day to discuss and implement the linkage of observations and modelling activity before, during, and after the expedition
Polar Prediction School 2018
When: 17 - 27 April 2018 | Where: Abisko (Sweden)
Contact: Fiona Tummon
The Polar Prediction School was held from 17-27 April 2018 at the beautiful Abisko Scientific Research Station in northern Sweden. It brought together 29 students from nine different countries and at various career stages, from early PhD students through to post-docs. The programme for the school was designed to provide a comprehensive overview of the main aspects related to polar weather and climate prediction. It included theoretical lectures, practical exercises, meteorological fieldwork, and a dedicated science communication programme.
Polar Lows and Mesoscale Weather Extremes
When: 5 - 6 April 2018 | Where: Trier (Germany) | Contact: Prof. Dr. Günther Heinemann
The workshop attracted 30 scientists from China, France, Germany, Japan, Norway, Russia, UK, and USA to present most recent findings on polar low research. The workshop summarized our present understanding of polar lows and mesocyclones as well as mesoscale weather extremes in the Arctic and Antarctic. This includes e.g. mesoscale weather phenomena such as katabatic winds, tip jets, boundary layer fronts, and cold air outbreaks in polar regions. The workshop had the following main themes: Polar low studies using satellite data and in-situ data; climatological aspects of polar lows; polar lows in reanalyses and model simulations; environments for polar low genesis and operational aspects; polar mesoscale weather phenomena and air-sea-ocean interactions. The workshop was concluded by a round table discussion resulting in recommendations for future research and actions.
MOSAiC Implementation Workshop
The 4-day MOSAiC workshop at Arctic and Antarctica Research Institute in St. Petersburg was the follow-up to the workshop in spring 2017 in Prague. Around 120 people participated in the workshop and made it a successful event with great progress of implementing MOSAiC.
During the first one and a half days, the workshop focused on overview presentations of the MOSAiC teams, cross-cutting teams and task groups, including several talks about the modelling hierarchy and modelling strategy. The coordinators of the teams presented the status of the implementation and organization of the measurements during the expedition, the scientific gaps, and the funding situation. The remaining time was spend on breakout sessions for each of the MOSAiC teams, the cross-cutting teams and the task groups. The results of the sessions were a clear understanding of the planned scientific work and how to implement and schedule the work. Additionally, the input for the modelling activity was discussed in each team to fulfill the requirements of the modelling community to achieve the overarching goal of improving sea ice forecasting, regional weather forecasting, and climate predictions.
For more information please see the MOSAiC website
Arctic/Midlatitude Weather and Climate Linkages
When: 12-13 September 2017 | Where: Helsinki (Finland) | Contact: James E. Overland
The workshop compared case studies of recent linkage events, focusing on large- and synoptic-scale circulation patterns. The two recent winters (2015-6 and 2016-7) had extreme warm Arctic temperatures, yet how they evolved on a month to month basis were different in both East Asia and eastern North America. An eastern shift in the longitudinal phasing of the long wave pattern was evident between years earlier in this decade. Activities include cases that represent strong and weak meridional flow (Eurasia), high amplitude flows (western N. America), the initiation and maintenance of high-latitude blocking episodes in key regions (Greenland, Siberia) and their teleconnections, planetary wave trains, and coupling with the stratosphere.
A key path forward is to improve mechanistic/dynamical understanding. Analyses are needed connecting extreme weather events with longer-term climate forcings. Multiple factors are involved that make it difficult to develop a whole picture; there are no single pathways.
The Second PACES Science Workshop
At the 2nd PACES Open Science Workshop, leading investigators in the Earth-Arctic system gathered to discuss the latest issues regarding sources, processing, and impacts of trace gas and aerosol pollution in the Arctic. The workshop was focused on improving predictive capabilities of Arctic air pollution processes and the interaction between Arctic air pollution and Arctic societies through discussions and presentations. PACES aims to review existing knowledge and foster new research on the sources and fate of Arctic air pollution, its impacts on climate, health, and ecosystems, on the feedbacks between pollution and natural sources, on climate responses, and on societal perspectives, including sustainability, adaptation and economic feedbacks.
Key recommendations for improved understanding of pollution processes and impacts emerged from discussions at the workshop, including motivation for new modelling and field observations.. These include efforts to develop international collaborative experiments aimed at improving knowledge of processes controlling export of pollution from mid-latitudes to the Arctic, as well as experiments targeted at sampling sources and processing of pollution in an Arctic urban environment.
For more information please see the PACES website
• Long-range transport of pollution to the Arctic is intimately linked to Arctic climate change and changes in large-scale circulation patterns but such linkages require improved quantification.
• Natural sources of trace constituents in the Arctic such as dust aerosols or biogenic hydrocarbons, and their potential evolution as a result of climate change, are poorly constrained.
• Large uncertainties surround the formation and processing of local air pollution under very cold, dry, stable conditions in the Arctic.
• Model treatments of wet deposition and chemical/aerosol processing are still significant and are motivating the planning of a new field experiment (IMPAACT) designed to sample air masses in a quasi-Lagrangian fashion during transport of pollution from Asia to the Arctic.
Towards an Interdisciplinary Research Agenda for Arctic Air Pollution (PACES)
The Arctic is increasingly considered an Anthropocene climate frontier, as the consequences of global warming look set to first and foremost impact the circumpolar hemisphere. The region is expected to become increasingly important as climatic changes look set to spark industrial-scale resource extraction and increased transport and commodity shipping, in turn, spelling severe impacts for the regions ecological and cultural landscapes due to industrialisation and consequent increases in pollution emissions from local sources related to mining and shipping. In studying the developments that are happening right now, research exchange and collaboration is timely not only between academic disciplines, but also increasingly, with relevant local partners and society at large.
This workshop provided a forum for focused discussions on how to combine research methodologies from humanities, social and natural sciences to understand current and future air pollution in the Arctic with the aim of proposing mitigation options. The conversations built on ideas from two previous PACES meetings held in 2015 and the “Air pollution and Arctic Societies” workshop in Fairbanks during ASSW 2016. Participants designed a multi-scale framework in which research methodologies of drivers, impacts and related decision making of air pollution were identified at the local, regional and global level.
For more information please see the PACES website
• The workshop engaged researchers from humanities, social and natural sciences into discussing Arctic air pollution from a multi-disciplinary perspective.
• Participants from three IASC working groups submitted a successful cross-cutting proposal to follow up with concrete on the ground research plans.
• A multi-scale framework of air pollution drivers, impacts and related decision making was created.
MOSAiC (2-day workshop during ASSW 2017)
When: 4-5 April 2017 | Where: Prague (Czech Republic)
The MOSAiC project is an international Arctic research initiative that aims to improve understanding of the climate system in the Arctic through a comprehensive, interdisciplinary, and sustained process. Primary goals of the initiative include enhanced process-level understanding of the coupled central Arctic climate system to improve numerical models for sea-ice forecasting, extended-range weather forecasting, climate projections, and climate change assessment. The fundamental design of MOSAiC is the year-round operation of an observatory onboard the RV Polarstern, drifting with the sea ice across the central Arctic. The MOSAiC workshop in April was the first strategic session concerning the expedition´s implementation.
As an IASC devised project, the MOSAiC workshop brought together 90 participants to explore the multidisciplinary research of the project through talks and breakout sessions. Strategically, the four breakout sessions focused on small scale processes, regional scale processes, green sea ice, and operational aspects of MOSAiC. The workshop highlighted the major scientific and logistic undertaking of MOSAiC and brought about productive discussions on the next steps for MOSAiC, including as the establishment of additional MOSAiC teams, capacity building, acquiring funding, how to involve stakeholders, and the next MOSAiC meetings.
For more information please see the following page.