Measurements on Smoke Plumes from Individual Fires

UW Flight Number Date (1995) Period of Measurements (hhmm UTC) Location Type of Smoke Plumes Sampled Comments
1688 17 Aug 1740 - 1741
1802 - 1814
1830 - 1836
1912 - 1953
North of Brasilia Four small cerrado (grass and shrub) fires See Hobbs' photos on Roll #1 photos #4-7
1690 21 Aug 1802 - 1905 Brazilia Extensive measurements on 1 small prescribed cerrado burn. A few measurements, prior to prescribed burn, on another cerrado plume. IBAMA prescribed burn. Also measurements from IBAMA Banderante (Riggan) and Lear jet (Brass) aircraft. Ground observations by Ottmar. (See Hobbs' photos on Roll #1 photos #12-17.)
1692 24 Aug 1723 - 1758
1826 - 1905
North of Cuiaba Several grass and forest fires. Last plume studied was flaming combustion of trees. Sampled last plume (from flaming combustion of trees) at several distances downwind. (See Hobbs' photos on Roll 2 photos #4-6.) Should be good for emission factors. Also good lidar, optical, and TDDR measurements.
1693 25 Aug 1750 - 2025 West and north of Cuiaba Slash burn of logged area in regular rows. Many passes through plume. (See Hobbs' photos on Roll 2 photos #18-24 showing fuel rows and plumes.) Lots of humidigraphs.
1695 28 Aug 1717 - 1735
(Fire 1)
1802 - 1842
(Fire 2)
1902 - 1928
(Fire 1)
West of Cuiaba Sampled 2 plumes for emission factors. Smoldering grass fires, maybe some flames. (See Hobbs' photos Roll 4 photos #4-6.) Sampled 2nd fire fairly extensively at several distances downwind. Good OEC data. Flight primarily devoted to two smoke-cloud interaction studies.
1703 7 Sep 1547 - 1814 South-east of Porto Velho Sampled 1 good plume for chemical measurements and another plume near by for physical measurements. Fire was slash burning of downed (dead) trees. Flight devoted primarily to vertical profile over sunphotometers and CAR measurements. ER-2 overflight.
1704 11 Sep 1430 - 1522
1540 - 1541
1601 - 1609
South-east of Porto Velho Sampled 2 plumes from slash burning of downed (dead) trees. (See Hobbs' Roll 5 photo #17.) Good chemical measurements on 1st plume
1705 12 Sep 1714 - 2001 South-east of Porto Velho (1) Smoldering slash burn of dead trees some flames) produced white and black smoke. (See Hobbs' Roll 5 photos #18-22.)
(2) Some individual (smoldering) slash burns.
(3) Flaming grass burn (black smoke). (See Hobbs' Roll 5 photo #23.)
Flight largely devoted to individual plumes and smoke-cloud interactions. Good optical measurements.
(1) Emission factors, evolution, and measurements in and around cloud produced by fire.
(3) Emission factors and physical measurements.
1706 13 Sep 1650 - 1723 North-east of Porto Velho Flaming slash burn on edge of forest. (See Hobbs' Roll 6 photos #1 and 2.) Emission factors. Time evolution measurements, and effects on cloud.
1706 13 Sep 1814 - 1826 North-east of Porto Velho Pasture grass fire. (See Hobbs' Roll 6 photo #3.) Emission factors, evolution, humidigraphs.
1707 14 Sep 1314 - 1315 North-east of Porto Velho Haze and cloud too thick to ground. Transit flight. One bag for physical measurements on a plume at 9000ft.
1708 14 Sep 1810 - 1811 East of Manaus Slash burn Transit flight. One plume sample.
1710 16 Sep 1400 - 1532 ~100 miles south of Maraba Smoldering combustion of primary forest and undergrowth. (See Hobbs' Roll 6 photo #4.) Three samples of plumes for emission factors. (See Hobbs' Roll 6 photos #5-7 showing burned areas and ash, south of Maraba.)
1711 16 Sep 1845 - 1918
1930 - 2040
North-east of Maraba (1) Pasture burning, some flames, brown.
(2) Flaming combustion of trees and undergrowth.
(1) Good chemical samples.
(2) Extensive sampling of plume. (See Hobbs' Roll 6 photos #9-14 of clouds produced by fires in area sampled.)
1712 17 Sep 1622 - 1638
1634 - 1652
East of Maraba (1) Flaming combustion of brush and palm trees.
(2) Flaming grass fir (black smoke).
(1) Emission factors.
(2) Emission factors. Extinction cell measurements. Biggest fires sampled to date (very black). A3 activity and humidigraph growth.
1713 17 Sep 1852 - 2016
2036 - 2057
North-east of Maraba Flaming combustion of pasture moving into brush and trees. Emission factors. Good optical (OEC and A3) measurements.
1716 20 Sep 1742 - 1836 North-west of Brazilia Cerrado, with some flames. Samples for emission factors at various distances downwind. (Good humidigraphs and OEC data.) Returned later to same fire and got further emission factor, etc. measurements.

Doug Burks
Last changed: 11 Apr 1996