Different scenarios for the origin of nitrogen in Jupiter’s atmosphere. In scenario A (top), the nitrogen is accreted during the bulk of the atmosphere accretion from the part of the disk that is rich in N₂ gas close to the N₂ ice line. The gas is enriched by rapidly drifting pebbles from outside the N₂ ice line. In scenario B (middle), nitrogen is brought in with the solid material that accretes onto Jupiter while it is in the cold outer disk. This limits core formation to outside the N₂ ice line, leaving the location of gas accretion unconstrained. In scenario C (bottom), Jupiter forms somewhere inside the N₂ ice line, as far in as the H₂O ice line, the classical location of Jupiter formation. Dinitrogen then has to be brought in on planetesimals that originate outside of the N₂ ice line and migrate towards the location of the forming Jupiter. This scenario leaves almost no room for solids other than the N₂-rich solids to be accreted by Jupiter after the initial core has formed. Scenario B seems to be the most reasonable scenario.