SEAC4RS: Asian Emissions and Climate / Air quality

Climatological mixing ratio of hydrogen cyanide (HCN)

Below: MODIS fire counts for July 1 through October 31, 2006. Asian monsoon convection and Indonesian biomass burning have relevance to both climate and air quality.

(Upper left) Climatological mixing ratio of hydrogen cyanide (HCN), a biomass burning tracer, near 16.5 km during NH summer season (JJA) derived from ACE satellite measurements (color contours), together with wind vectors highlighting the Asian monsoon anticyclone. (Upper right) Latitude-height cross section of HCN from ACE data, showing extension of the HCN plume across the tropopause (white dashed line) into the stratosphere.  [Randel et al., 2010 Science].

MODIS fire counts for July 1 through October 31, 2006.