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Guam Smoke Case Study, February 28, 2007 |
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Click on images for blow-up.
These are plots of NAAPS aerosol optical depth CONTOURED AT VERY LOW CONCENTRATIONS. I would believe the axes of the plumes and sharper gradients, but not the absolute values. I have contoured them at low values to see if anything is reaching Guam.
NAAPS Aerosol optical depth for Feb20 - Mar 7, 2007
In 2007 we see the southern boundary of the smoke (blue contours) oscillates between 10 and 20N, with southernmost extension at 144E on the 28th.
NAAPS Aerosol optical depth for Feb20 - Feb 28, 2006
2006 also shows southern boundary of the smoke is between 25 and 15 N. There is more dust to the south this year.
NAAPS Aerosol optical depth for Feb20 - Mar 7, 2005
2005 has the highest smoke optical depths. Detectable amounts of smoke reached the U.S. that year. Note too the westward advection of smoke along 10N in the last few days of the loop
NAAPS/NOGAPS cross-section along 144E for Feb 20 - Mar 7, 2007
Shows the front, smoke, dust, and sulfate all heading south and descending in February with southermost extent of smoke on the 28th. Then it heads back north.
Acknowledgements
Thanks to Edson/NOAA/Guam for bringing this case to our attention.
Last updated March 2, 2007
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