摘要：Open fires play a significant role in atmospheric pollution and climatic change. This work
aims to develop an emission inventory for nonagricultural open fires in Asia using the newly
released MODIS (Moderate Resolution Imaging Spectroradiometer) burned area product
(MCD45A1), as the MODIS sensor cannot efficiently detect field crop residue burning.
Country-level or province-specific biomass density data were used as fuel loads. Moisture
contents were taken into account when calculating combustion factors for grass fuel. During
the nine fire years 2000–2008, both burned areas and fire emissions clearly presented spatial
and seasonal variations. Extensive nonagricultural open fires were concentrated in the
months of February and March, while another peak was between August and October.
Indonesia was the most important contributor to fire emission, which was largely
attributable to peat burning. Myanmar, India, and Cambodia together contributed
approximately half of the total burned area and emission. The annual emissions for
CO2, CO,
CH4,
NMHCs,
NOx,
NH3,
SO2, BC,
OC, PM2.5,
and PM10 were 83 (69–103), 6.1 (4.6–8.2), 0.38 (0.24–0.57), 0.64 (0.36–1.0), 0.085 (0.074–0.10), 0.31
(0.17–0.48), 0.030 (0.024–0.037), 0.023 (0.020–0.028), 0.27 (0.22–0.33), 2.0 (1.6–2.6), and 2.2
(1.7–2.9) Tg yr − 1, respectively. This inventory has a daily temporal resolution and 500 m spatial resolution,
and covers a long period, from April 2000 to February 2009. It could be used in global and
regional air quality modeling.
