HR: 1330h
AN: A22B-1067    [PDF]
TI: Using "Blue Spike" to Detect Biomass Burning Sites During SAFARI 2000.
AU: * McCourt, M L
EM: michele@jcet.umbc.edu
AF: JCET/UMBC Physics Department, 1000 Hilltop Circle, Baltimore, MD 21250
AU: McMillan, W W
EM: mcmillan@umbc.edu
AF: JCET/UMBC Physics Department, 1000 Hilltop Circle, Baltimore, MD 21250
AB: During some flights of the ER-2 while participating in the Southern African Regional Science Initiative (SAFARI 2000), the University of Wisconsin-Madison's Scanning High Resolution Interferometer Sounder (S-HIS) obtained spectra containing isolated fires within its field of view (FOV). These fire laden FOV's contain a spectral feature caused by rotational hot band transitions of CO$_{2}$ near 2400 cm$^{-1}$. Due to its location on the blue side of the 4.3$\mu$m band of CO$_2$, this feature is commonly referred to as the "Blue Spike." Using this feature we detected fires on August 24 \& 27 and September 6 \& 7, 2000. Fire locations are further verified by coincident increases in S-HIS retrieved carbon monoxide abundances as well as elevated temperatures in the thermal detectors of the MODIS Airborne Simulator (MAS) also onboard the ER-2. Using line-by-line radiative transfer (Genln2) with corrections for a fire's extreme high temperatures (HiTemp) we can model S-HIS spectra for various cases: background (cool surface and cool atmosphere), smoke (cool surface and warm atmosphere) and fire (hot surface and hot atmosphere) spectra. Results showing the ability to determine fire temperature and fire/smoke area within the S-HIS FOV will be presented.
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
DE: 0394 Instruments and techniques
DE: 0399 General or miscellaneous
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting