Trends in atmospheric haze induced by peat fires in Sumatra Island,
Indonesia and El Nino phenomenon from 1973 to 2003
Wang, Y.1*, R. D. Field1, and O. Roswintiarti2. 2004. Trends in atmospheric
haze induced by peat fires in Sumatra Island, Indonesia and El Nino
phenomenon from 1973 to 2003. Geophysical Research Letters, 31, L04103,
Visibility was used as a long-term indicator of atmospheric haze caused by peat fires on the peat land area of the island of Sumatra, Indonesia.Visibility and the anomalies of sea surface temperature in the Nin~o 3.4 region from 1973 to 2003 were analyzed. A significant linear relationshipexisted between the visibility and time, and the two signals shared two periodic components of 45 months (3.7 yr) and 61 months (5.1 yr),corresponding with the El Nino-Southern Oscillation (ENSO) variability.
Visibility decrease occurred about 3 months earlier than peak ENSO, suggesting fires initiated during the ENSO onset stage. The studydemonstrated the connection of inter-annual climate variability, biomass burning, and air quality in the region. The study could facilitate theprediction of change in fire occurrence and air quality from ENSO monitoring data.
1 Canadian Forest Service, Northern Forestry Center, Edmonton, Canada
2 Indonesian National Institute of Aeronautic and Space, Jakarta Timur,
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