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EGU General Assembly 2018

Vienna, Austria
Meeting Category

The EGU General Assembly 2018, from 8–13 April 2018, will bring together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary and space sciences.

The EGU aims to provide a forum where scientists, especially early-career researchers, can present their work and discuss their ideas with experts in all fields of geoscience.


Austria Center Vienna (ACV)
Vienna, Austria

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The assembly is open to the scientists of all nations. The entire congress centre is fully accessible by wheelchairs.

Important dates

11 October 2017: Start of call-for-abstracts, support application, and  splinter meeting requests
1 December 2017: Deadine for support applications
10 January 2018: Deadline for receipt of abstracts
18 January 2018, 13:00 CET: Deadline for receipt of late abstracts, and requests for townhall meetings
26 January 2018: Letter of acceptance
1 March 2018: Deadline for early registration, splinter meeting requests, and letters of invitation

Access the full list of deadlines:


Abstracts are due 10 January 2018.

Submit an abstract here: or go to the session page to submit.


Read all about the registration process, costs and deadlines here:

General contact

Copernicus Meetings
Bahnhofsallee 1e 37081
Göttingen Germany
Phone +49 551 90 03 39 20
Fax +49 551 90 03 39 70

Further information

Access the accommodation information:

Go to the official website:

Twitter hashtag: #EGU18

PAGES sessions

CL1.02 Studying the climate of the last two millennia (Session: 26410)
Convener: Lucien von Gunten. Co-Conveners: Helen McGregor, Anne Hormes, Juan José Gómez-Navarro, Elizabeth Thomas & Hugo Beltrami

This session highlights integrative paleoclimate research on the climate of the past 2000 years. We invite presentations that provide insights into data syntheses, quantitative temperature and hydroclimate reconstructions from local to global scales, novel approaches to producing multi-proxy climate field reconstructions, and contributions critically addressing non-climatic influences on proxies used in climate reconstructions, or integration of information from proxies with different time resolutions.

This session also encourages presentations of new external forcing reconstructions or assessment, analysis of transient climate simulations, new approaches that provide further insight from model-data comparison exercises, proxy system modeling, proxy-data assimilation, as well as the attribution of past climate variability to external drivers or internal climate processes.

The session is co-sponsored by the PAGES 2k project:

CL1.03 Flood and weather extremes of the past (Session: 26415)
Conveners: Stephan Dietrich, Markus Czymzik. Co-Conveners: Bruno Wilhelm, Ruediger Glaser, Hugues Goosse, Monica Ionita-Scholz, Markus Stoffel & Stefanie Wirth

The session will concentrate on a better understanding of timing, magnitude and boundary conditions of climate extreme events in the past such as severe floods, heat waves, storms and droughts. Only with a reliable and comprehensive understanding of the variability of past extreme events, projections about the future occurrence of these events can be made and hazard mitigations plans be established. This is essential in the light of current global change, which is expected to lead to an intensification of the hydrological cycle and a shift in frequency and magnitude of meteorological extremes.

We invite contributions that explore the variability and the physical mechanisms of past climate extremes on decadal to millennial time-scales based on the analysis of instrumental and historical data, as well as on the investigation of natural archives such as e.g. fluvial, lake and marine sediments, tree rings, speleothems and molluscs. Furthermore, we welcome results from statistical and modeling efforts that lead to a better understanding of the synoptics and forcing of climate extreme events, i.e. whether these events are a stochastic component of internal climate variations or associated to specific boundary conditions and external forcing factors such as volcanic and solar activity. Contributions that integrate both, proxy data and climate modeling are particularly welcomed.

The session is co-sponsored by the PAGES Floods Working Group: and the recently launched PAGES Integrative Activity focusing on Extremes:

CL1.08 Tropical coral archives – Reconstructions of climate and environment beyond the instrumental record at society-relevant timescales (Session: 28768)
Convener: Miriam Pfeiffer. Co-Conveners: Thomas Felis, Jens Zinke, Tsuyoshi Watanabe & Atsuko Yamazaki

Shallow-water coral archives provide precisely-dated annually to monthly-resolved reconstructions of marine climate and environmental change from across the global tropics to subtropics. They are a key archive to constrain past seasonal, interannual and decadal variability – the time scales most relevant to human societies – beyond the start of systematic reef monitoring programs and instrumental observations of climate. Coral reconstructions extending back for centuries provide a link between the observational period and lower-resolution sediment archives. This is of high relevance for comparisons of proxy data with model simulations of reef ecosystem dynamics and global climate. Warming sea surface temperatures are currently the major threat to the future of coral reefs, as seen again following the severe bleaching after the El Nino event in 2015. Hence, coral paleoclimatology is of primary importance not only for understanding climate change but also for ecology.

Well-preserved fossil corals provide high-resolution snapshots for time intervals of the Holocene, the last glacial-interglacial cycles, the Miocene and the Pliocene. Coral paleoclimatology provides an opportunity for collaborations among paleoclimatologists, marine geologists, coral reef ecologists, carbonate geochemists, experts in biomineralization, carbonate diagenesis and U-series dating, climate modellers, climate dynamicists, and climate statisticians, in order to provide robust and innovative paleoclimate and environmental reconstructions and interpretations. The aim of this session is to present and discuss latest research on past marine climate and environmental change at society-relevant timescales (seasonal, interannual, decadal), in order to understand the long-term context and impacts of future changes in the tropical to subtropical oceans, reef ecosystems, and adjacent continents.

A key challenge is to retain the necessary scientific expertise and leadership to undertake ground-breaking research on past marine climate and environmental change at society-relevant timescales, in order to understand the long-term context and impacts of future changes in the tropical to subtropical oceans and adjacent continents. We therefore strongly encourage PhDs and early career scientists to present their research. This session is related to the PAGES 2k network project CoralHydro2k: Tropical ocean hydroclimate and temperature from coral archives of the last 2 millennia.

This is a CoralHydro2k session:

CL1.18 Proxy system modelling and data assimilation in paleoclimatology (Session: 28753)
Convener: Hugues Goosse. Co-Conveners: Michael Evans & Samar Khatiwala

Numerical simulations and observations are complementary and combining them efficiently has been the topic of many recent studies. This session will focus on two specific aspects: data assimilation and proxy system modeling, and on the applications on these techniques to constrain past climate and environmental changes. Proxy system models have been developed to explicitly simulate the variable measured in an archive (for example, tree ring width, pollen assemblage or d18O in corals) that serves as a proxy for environmental conditions. When driven by outputs from a climate model, this offers the possibility to perform model-data comparison directly, thus avoiding the often ill-conditioned transformation of the observed quantity into a variable simulated by the model (such as the temperature or precipitation). Data assimilation uses observations and simulations to produce estimates based on both sources of information, given uncertainties in each. If certain key assumptions of the method are met, this approach allows estimation of environmental parameters for regions and times which lack observations, potentially leading to a better mechanistic understanding. Ideally, proxy system models should be an essential element of any data assimilation procedure. Nevertheless, biases in climate models and the limitations of the proxy system models themselves may restrict the advantages of including proxy system models in data assimilation compared to simpler choices based on statistical methods. In this session, we welcome contributions describing and applying proxy system models as well as experiments using data assimilation to reconstruct past changes or understand the origin of those changes, on all spatial and temporal scales. Contributions integrating different data sources, comparing various models and methods or integrating proxy system models in a data assimilation procedure are particularly welcome.

This is a DAPS session:

IE2.4/NH5.7/CL4.18/GD11.7/OS2.14 Sea-Level Changes from Minutes to Millennia (co-organized) (Session: 28789)
Convener: Simon Engelhart. Co-Conveners: Benjamin Horton, Andrew Kemp & Nicole Khan

Reconstructions of former sea levels are important for identifying the meltwater contribution during deglaciation, constraining parameters in Earth-Ice models, estimating past and present rates of spatially-variable vertical land motion, and understanding the sensitivity of sea-level rise to climate variations. Sea-level reconstructions capture multiple phases of climate and sea-level behavior for model calibration, provide a pre-anthropogenic background against which to compare recent trends, and characterize patterns of natural variability.

An overarching theme uniting the sea-level research community is the development of accurate records with a full consideration of uncertainty. We seek to constrain the age of events (chronologies) and increase the vertical resolution of estimates of sea-level changes due to both land and sea-level movement (e.g., glacial isostatic adjustment and natural climate variability). We welcome abstracts that present new proxy evidence for changes in relative sea level, particularly with a focus on using these proxy records to constrain our understanding of present and future sea-level changes. This session is a contribution to IGCP Project 639, PALSEA2, and INQUA projects CMP1601P and CMP1701P.

This is a PALSEA2 co-organized session:

IE2.3/AS3.10/CL4.22/GMPV6.4/NH2.2 Characterizing, understanding and predicting the radiative effects and the climatic impacts of major volcanic eruptions (co-organized) (Session: 28135)
Convener: Davide Zanchettin. Co-Conveners: Myriam Khodri, Graham Mann, Claudia Timmreck & Matthew Toohey

Volcanic eruptions are a major natural driver of climate variability at interannual to multidecadal time scales. Assessment of volcanically-forced climate variability is complicated by many limiting factors, including, for instance, the paucity of observed eruptions, uncertainties associated with volcanological forcing datasets for the current and pre-instrumental period, limitations of proxy-based climate evidence, uncertainties of global aerosol model simulations and the apparent large inconsistencies in the responses to volcanic forcing simulated by current climate models.
This session aims to highlight new integrative research on aerosol radiative forcing and the climatic response to volcanic eruptions of Pinatubo-magnitude and larger, including studies conducted under the umbrella of the CMIP6-VolMIP, SPARC-SSiRC, CMIP6-PMIP4, and PAGES-VICS activities. Focus is on the quantification of uncertainties in volcanic forcing generated by current global aerosol models and their evaluation against stratospheric aerosol observations, on the reconstruction of volcanic forcing and the characterization of past volcanically-forced climate variability, particularly during the Common Era, and on the identification of dominant mechanisms of interannual-to-interdecadal volcanically-forced variability by means of observations, climate reconstruction studies as well as modeling approaches. We further invite contributions on the potential role of volcanic eruptions on future climate variability and predictability.

This is a VICS co-organized session:

IE2.1/NP3.4/AS1.8/CL2.08/CR1.9/OS1.20/ST4.7 Climate Variability Across Scales and Climate States (co-organized) (Session: 28132)
Convener: Kira Rehfeld. Co-Conveners: Thomas Laepple, Shaun Lovejoy, Louise Sime, Anna von der Heydt & Michel Crucifix

The Earth's climate is highly variable on all spatial and temporal scales, and this has direct consequences for society. For example, changes in variability (spatial or temporal) can impact the recurrence frequency of extreme events. Yet, it is unclear if a warmer future is one with more, or with less, climate variability, and at which scales, as a multitude of feedbacks is involved, and the instrumental record is short.

We welcome contributions that improve quantification, understanding and prediction of climate variability in the Earth System across space and time scales through case studies, idealized or realistic modeling, synthesis, and model-data comparison studies that provide insights into past, present and future climate variability on local to global, and synoptic to orbital timescales.

This session aims to provide a forum to present work on:
- the characterization of climate dynamics using variety of techniques (e.g. scaling and multifractal techniques and models, recurrence plots or variance analyses) to study its variability including periodicities, noise levels, or intermittency.
- the relationship between changes in the mean state (e.g. glacial to interglacial, preindustrial to present to future), and higher-order moments of relevant climate variables, to changes in extreme event occurrence and the predictability of climate.
- the role of ocean, atmosphere, cryosphere and land surface processes in fostering long-term climate variability through linear – or nonlinear – feedbacks and mechanisms.
- the attribution of climate variability to internal dynamics, or the response to natural (volcanic or solar) and anthropogenic forcing.
- the interaction of external forcing (e.g. orbital forcing) and internal variability such as mechanisms for synchronization and pacing of glacial cycles.
- the characterization of probabilities of extremes, including rare "black swan" events and the linkage between slow (interannual to millennial) climate variability and extreme event recurrence.
- the development and characterization of statistical tools and stochastic models to quantify the distribution, or scaling, of climate variability over a wide range of timescales from short, noisy and irregular (paleo-)climate time series, such as robust estimators for power spectral analyses, fluctuation analyses (detrended, Haar or other) and wavelets.

The session is also an opportunity to present and discuss first results of the Past Global Changes (PAGES) working group on Climate Variability Across Scales (CVAS):

Access all paleoscience sessions:

Short course

SC1.25/NP8.4 Scales and scaling in the climate system (co-organized) (Session: 28980)
Convener: Shaun Lovejoy, Co-Conveners: Christian Franzke & Thomas Laepple

The climate is highly variable over wide ranges of scale in both space and time so that the amplitude of changes systematically depends on the scale of observations. As a consequence, climate variations recorded in time series or spatial distributions, which are produced through modelling or empirical analyses are inextricably linked to their space-time scales and is a significant part of the uncertainties in the proxy approaches. Rather than treating the variability as a limitation to our knowledge, as a distraction from mechanistic explanations and theories, in this course the variability is treated as an important, fundamental aspect of the climate dynamics that must be understood and modelled in its own right. Long considered as no more than an uninteresting spectral "background", modern data shows that in fact it contains most of the variance.

We review techniques that make it possible to systematically analyse and model the variability of instrumental and proxy data, the inferred climate variables and the outputs of GCM’s. These analyses enable us to cover wide ranges of scale in both space and in time - and jointly in space-time - without trivializing the links between the measurements, proxies and the state variables (temperature, precipitation etc.). They promise to systematically allow us to compare model outputs with data, to understand the climate processes from small to large and from fast to slow. Specific tools that will be covered include spectral analysis, scaling fluctuation analysis, wavelets, fractals, multifractals, and stochastic modeling; we discuss corresponding software.

This is a CVAS short course:

Other relevant session

Future Earth E3S Extreme Events and Disaster Risk Knowledge-Action Network
IE1.1/BG1.15/NH8.7/NP9.3 Climate extremes, biosphere and society: impacts, remote sensing, and feedbacks (co-organized) (Session: 28785)
Convener: Markus Reichstein. Co-Conveners: Sonia Seneviratne, Michael Bahn, Gabriele Hegerl, Dorothea Frank, Tim van Emmerik, Jana Sillmann & Julia K. Green

This session explores the linkages between climate extremes, biosphere and societal dynamics. I.e. emphasis is laid on 1) what impacts are caused by climate extremes on various aspects of the biosphere (incl. e.g. productivity, biogeochemical cycling, biodiversity) and society (e.g. political, economic aspects), and 2) which feedbacks exist amplifying or moderating the intensity, duration or extent of climate extremes. Empirical, theoretical and modelling studies from local to global scale are all highly welcome.

Splinter meetings

1. Thresholds, tipping points and multiple equilibria in records of past climate and the environment. What are they and is there still something to be learned? (SMP5)
Convener: Marie-France Loutre. Co-Convener: Edward Brook

Recently the Past Global Changes Magazine featured "tipping points" in climate as well as in biological, ecological or social systems. Although thresholds, tipping points and multiple equilibria are much discussed in the scientific literature, and many paleo systems have been studied in this regard, the relevance for future changes may still not be clear.

This Splinter Meeting invites a discussion on how to move forward on this topic. Amongst the questions to be discussed are how to define "tipping points", how to detect and diagnose tipping points in data and in model simulations, and how to identify when a system is close to the tipping point. This discussion could lead to further activities on this topic.

This is an open/public meeting. It will be held on Thursday 12 April from 15:30-17:00 in Room 0.51 in the Austria Center, Vienna.

2. Introduction of the PAGES Early-Career Network (SMP30)
Convener: Nick Schafstall.

Introduction of the PAGES Early-Career Network (ECN) to all early-career researchers at EGU. Presentation of our website, social media and benefits of joining.

This is an open/public meeting. It will be held on Monday 9 April from 17:30-19:00 in Room 2.83.

3. Kickoff meeting of the PALEOLINK working group (SMP39)
Convener: Juan José Gómez-Navarro.

The newly-formed PALEOLINK 2k Network project has organized a kickoff meeting on Monday 9 April, before the posters, but after the 2k session. Exact details to come.

PALEOLINK members aim to evaluate and develop new downscaling strategies that allow the linking of coarse Earth System Model simulations with proxy records. This short inaugural meeting is open to anyone interested in this topic. We would like to gather ideas and expertise for forthcoming coordinated studies about past climate variability at regional scales. Among others, we would like to address the following questions:
- What high-resolution simulations are available nowadays? Can we build an "official catalogue"?
- Can we identify regions especially suitable for model-proxy comparisons in terms of proxy availability/sensitivity?
- How could we gather expertise from forward modelling?
- Can/should we come up with a common protocol to facilitate data exchange?

This meeting will be held on Monday 9 April from 17:30–19:00 in Room 2.61.

*Post-meeting material: Read the kickoff meeting report here.*

4. Reinforcement of links between paleo and modern communities with respect to hydrological and climatic extremes (SMI5)
Convener: Stephan Dietrich

Invited will be the conveners and some key participants of:
a) Flood and weather extremes of the past (CL1.03)
b) Tackling past hydrological cycles - from local and regional to global scales (CL1.06/GM8.12/HS1.19)
c) Extreme Events and Impacts (CL3.01) []
d) Hydrological extremes: from droughts to floods (HS2.1.1)

This meeting will be held on Wednesday 11 April from 12:15–15:00 in Room 0.51.

5. PAGES 2k Network: MULTICHRON, ARAMATE and PSR2k projects (SM126)

Three current PAGES 2k Network projects MULTICHRON, ARAMATE and PSR2k will meet on Wednesday 11 April from 19:00-20:00 in Room 0.16.

These three projects are focussed on the North Atlantic and incorporate high-resolution marine archives. MULTICHRON and ARAMATE members have yet to meet, so this will be a good opportunity to discuss future strategy.

Draft agenda
1. Data production and collation
2. Possible applications to H2020 next year
3. Joint workshop at ICP13, Sydney, Australia, September 2019.

If anybody would like to discuss anything else, please get in touch with your respective group leader. Members of the three projects who are at EGU are welcome to come, as are any friends or colleagues who you think might be interested in joining any of the groups.

Working group meeting

1. Floods (FWG): The annual meeting will take place on Wednesday 11 April at 13:30 in Room 0.16.
The plan is to introduce the new FWG structure with the three Work Packages (description, goals, tasks), discuss how to implement them and decide how to more involve motivated people.
The future of the FWG will be discussed, as phase 1 ends in (European) autumn 2018.

Annual meeting agenda
1. Introduction (Juan Ballesteros and Bruno Wilhelm)
2. New structure and key actions:
WP1: Collecting, storing and sharing paleoflood data (Michael Kahle)
WP2: Integrating and analysing paleoflood data (Lothar Schulte)
WP3: Communicating and disseminating (Vic. Baker and Juan Ballesteros)
3. Future trans-WP projects:
Special Issue (Global and Planetary Change) (Lothar Schulte et al.)
Toward an IPCC contribution on paleofloods (Bruno Wilhelm)
4. Strategy for the coming year(s):
Proposal preparation for the second FWG phase (Juan Ballesteros and Bruno Wilhelm)


1. SISAL: Attention SISAL members. The conveners of the speleothem session have organised a "speleo dinner" on Thursday 12 April at 20:00 at the Ristorante Fratelli (Rotenturmstraße 11, A-1010 Wien). Sign up here: