MLS detects SO₂ and HCI injected into the stratosphere by the 27 January 2005 New Guinea Manam volcano.

The panels at the left show MLS detection of enhanced SO₂ and HCI in the lower stratosphere over New Guinea on January 28, following eruption of Manam volcano on January 27. Vertical profiles at the locations of the enhancement are shown below. Initial analysis indicate that the localized amount of enhanced HCI is about 3 times larger (in vertical column) than the maximum amounts measured for the large El Chichon and Pinatubo volcanoes.