National Aeronautics and Space Administration

Volcano	Date	SO2	Ash/Aerosols	Days tracked	Notes/Links
Nyiragongo, DR Congo	April-June 2003	May 3 - Jun 5	None detected	~23 (to date)	Significant SO2 emissions from Nyiragongo have been detected since late April.
Nyiragongo, DR Congo	January 2003	Jan 2 - 10	None detected	~7 (to date)	SO2 from Nyiragongo was still perceptible in TOMS data until mid-January.
Nyiragongo, DR Congo	December 2002	Dec 5 - 31	None detected	~17	Degassing from Nyiragongo became visible once again in TOMS data around December 3 (see below for images from October-November). Data gaps occur over Nyiragongo every other day.
Nyiragongo, DR Congo	October-November, 2002	Oct 8 - Nov 15	None detected	~24	Intense degassing from Nyiragongo became visible in TOMS data around October 7, continuing through October and November.
Nyiragongo, DR Congo	January 17, 2002	Jan17	None detected	1	SO2 cloud detected at around 1100 local time on Jan 17.