Atmos SIM is used for advanced hydraulic modeling to simulate the behavior of gas in the pipelines. The state-of-art pipeline simulation software has been applied successfully to Gassco's 7,800 km (4,847 miles) subsea gas network delivering an annual volume of approximately 100 billion standard cubic meters of Norwegian gas to customers in Western Europe.

The look-ahead functionality allows the operators to predict the pressure trends based on gas demand and production up to 48 hours into the future so Gassco can optimize their operating schedule.