14 September 1995
(This was a transit flight from Porto Velho to Manaus. Therefore, only limited measurements were obtained.)
RF: Okay. Summarize. Fairly clean air, hazy but fairly high particle counts all the way over at 9,000 ft. So, I concentrated on trying to load up one good set of Teflon, quartz and Nuclepore filters, so we could really get a good mass measurement of this background haze, old smoke-type stuff. Also collected Teflon, Mercury and MOUDI for Vanderlei. On all the bags, we were alternating between hot and cold DMPS. There were several samples where we did hot and cold on the same bag along with relative humidity growth factor. Did encounter one plume at 9,000 ft. Got a bag for physical measurements on that one. So, overall fairly good characterization of the regional old smoke.
Just a note here too on our descent into Manaus. There is very little smoke at low altitude. Nothing like what we saw taking off out of Cuiaba and it would appear at first glance that there is not much smoke or biomass burning up in this area.