<<<<<< Welcome COST Action PERGAMON Why are we here The program Organization

<<<<<< COST Action PERGAMON Study methane release in the Arctic from terrestrial and marine sources and their impact on the atmosphere. Promote cooperation between countries, institutes and scientist. Highlight the importance of discipline overarching cooperation. Enable networking by funding meetings, workshops, travel grants. No direct funding of science itself. The Action runs from

<<<<<< COST Action PERGAMON

<<<<<< COST Action PERGAMON Work Group A: Methane formation, transport and accumulation in terrestrial and marine sediments and permafrost Work Group B-1: Biogeochemical processes in the shallow sub-seafloor and at the sediment-water interface around seep sites Work Group B-2: Methane fluxes from the sea/lake- floor into the atmosphere Work Group C-1: Methane fluxes from the terrestrial environment (wetlands, tundra, Arctic-lakes) Work Group C-2: Atmospheric methane monitoring and global implications for current and future Arctic warming Work Group WG-D: Data compilation, integration and organization of data distribution among the scientific community

<<<<<< Why are we here? Bubble detection, quantification and monitoring are meanwhile common tasks to study natural and artificial gas release from: marine seeps lake sediments CCS areas water reservoirs leaking gas wells/pipelines Knowledge about geochemical bubble dissolution is needed to better understand: the transfere of methane from the seafloor towards the atmosphere the potential of localized ocean acidification the influence surfactans and gas hydrate skins have on bubble dissolution the impact of plume formation

<<<<<< Why are we here? A number of bubble dissolution models exist which have never been compared to each other as they are not available as online tools, usable code or something similar. Thus, they are not available for a wider scientific community. What we could/should do is: To do a model comparison and see where they differ To highlight shortcomings in the different models to advance their capabilities To compile models as online tools or standalone GUIs Write a comparison paper about the different models Design clever experiment to verify bubble dissolution in nature (dye, thermistors, automated water sampling profiler, video observations,...)

<<<<<< Program Tuesday, 8 January TimePresenterTopic 9:00 – 9:15Jens GreinertWelcome, why are we here 9:15 – 9:45Ira LeiferGeneral introduction to bubble behavior 9:45 – 10:15Gregor RehderBubble experiments in Monterey Bay 10:15 – 10:45Niko BigalkePressure tank experiments 10:45 – 11:00Coffee 11:00 – 11:30John LittleA basic discrete-bubble model 11:30 – 12:00Lisa VielstädteThe GEOMAR model 12: :30Guttorm AlendalModel parameter uncertainties for CO2 droplets 12:30 – 13:30Lunch 13:30 – 14:00Jens GreinertDiscussion 14:00 – 14:30Model run exercise 14:30 – 15:00Model run exercise 15: :30Coffee 15:30 – 16:00Model run exercise 16:00 – 16:30Jens GreinertModel result comparison 16:30 – 17:00Jens GreinertNext steps, web publication of models, comparison paper 19:30Joint dinner

<<<<<< Program Wednesday, 9 January TimePresenterTopic 9:00 – 9:15Jens GreinertWhy hydroacoustic 9:15 – 9:45Ilia OstrovskyGeneral introduction on bubble hydroacoustic 9:45 – 10:15Mario VelosoSingle beam data visualization 10:15 – 10:45Jens SchneiderMultibeam data visualization 10:45 – 11:00Coffee 11:00 – 11:30Greinert/SchneiderStudies of transient bubble release using GasQuant 11:30 – 12:00Ilia OstrovskyTowards quantification 12: :30Benoit Berges Quantification using passive acoustics and inverse modelling 12:30 – 13:30Lunch 13:30 – 14:00Tonya Del SontroBubble fluxes 14:00 – 14:30Miriam RömerFluxes in the Black Sea 14:30 – 15:00Ira LeiferFluxes from the ESAS 15: :30Coffee 15:30 – 17:00Jens GreinertNext steps, standardized processing for visualization & quantification

<<<<<< Presentations Please leave your presentations here so that they can be distributed/put on the PERGAMON webpage. Announcement 1st UAC (mergend ECUA & UAM) Corfu, Greece; June abstract deadline 15 January 2013 (300 words) Wireless network: geomar-public Pwd: 5pub3GEOMAR$$2

<<<<<< Dinner today We booked for 20 people in the Traum GmbH (Grasweg Kiel) Transport from the hotel can happen with private cars (Jens, Jens, Gregor,...).