JAKARTA, Oct 19 — Fires in Indonesia burned through more than 1.9 million hectares between January and the end of September this year, a monitor analysing satellite imagery said today.

The figure, covering an area nearly 12 times larger than London, is a conservative estimate partly because haze has complicated satellite verification, said David Gaveau, founder of deforestation monitoring site Nusantara Atlas.

Indonesia’s government has not provided official figures for areas burned since announcing that 202,000 hectares had been razed by the end of July.

Gaveau said the true scale of the burning was likely to be even higher than the 1,916,588 hectares his organisation had detected so far.