Addressing logistic challenges and the need for continuous CH4 flux assessment in the most remote and biogeochemically active parts of the cryosphere, we aim to test our hypotheses using a state-of-the-art monitoring system combining real-time visualisation of CH4 emissions by a hyperspectral camera and ecosystem-scale estimations by eddy covariance system coupled to a tuneable-laser-based CH4 sensor. These analyses will be complemented with concentration and δ13C-CH4 measurements allowing process understanding of the CH4 cycle. Selected gas samples will be dated using Δ14C-CH4 analysis (Tandem AMS - accelerator mass spectrometry) to evaluate whether recent or old organic matter is sourcing observable emissions. Our comprehensive approach will also include continuous estimates and modelling of glacial and permafrost discharge as well as hydroacoustic surveys over a large area of the Arctic coast to quantify bubble fluxes.