IMPACTS OF BIOMASS BURNING OVER SOUTHEAST ASIA

Raquel Fransisco (Phillipines) Edna Juanillo (Phillipines)

Dewi Kirono (Indonesia)

(Fabien Solmon )

AREA OF STUDY

Forest fire occurs quite oftenIn 1997-1998 ENSO event: 12 million hectares were burned causing more than US$ 9 billion economic loss

RATIONALES

Archipelago and montainous area

(NASA)

To simulate impacts of forest fire burning over the region

OBJECTIVE

CONTROL RUN

• 80 x 101• 55 km horisontal & 10 minute resolution• OISST & NNRP2 data set• LBC = relaxation• PBL = Holtslag• Fritsch & Chappell Convective closure• SUBEX large scale precipitation scheme • From 15 August 1997 to 1 October 1997

BIOMAS-BURNING RUN

• Constructed a data base of forest fire obtained from satellite images classify it as: No burning (0), Small burning (1), Medium burning (2), Heavy burning (3)

BIOMAS-BURNING RUN

• Constructed a data base of forest fire obtained from satellite images classify it as: No burning (0), Small burning (1), Medium burning (2), Heavy burning (3)

The satellite images are of August 17, 22, 24, 25 and 28 1997.

• Input the coded data of forest fire into the RegCM

• Run the tracer model with a change in optical property (absorbing aerosol – black carbon/soot)This is coded especially for this particular project

RESULTS

• Animation of the forest fire

• Shortwave radiation

• Cloud

• Air temperature

• Average temperature

• Average shortwave

Shortwave radiation (W/M2)

Control-Run Biomas-Run

Shortwave radiation and Cloud Fraction

Control-Run Biomas-Run

AIR TEMPERATURE

Control-Run Biomas-Run

Biomas-Run

Shortwave radiation (W/m2)

Control-Run

Control-Run

Biomas-Run

CONCLUSION

The model can capture:the transport and removal processdecrease of shortwave radiation reaching

the surface ; cooling of surface tropospheric warming effect of absorbing

aerosol (BC)influence on convection ??

THANK YOU

AND CIAO…..!