Measurements of Surface Reflectivities And Radiative Properties of Smoke with the CAR Scanning Radiometer

The CAR multi-wavelength radiometer, scanning from zenith to nadir aboard the Convair C-131A, was used to measure surface reflectivities. From 1 September to 4 September (UW Flights 1697 to 1699) and from 13 September to 20 September (UW Flights 1706 to 1716), the CAR was mounted so that it scanned approximately from horizon-to-horizon, thereby providing measurements similar, in principle, to a scanning radiometer aboard a satellite.

UW Flight No Date (1995) Period of Measurements
(hhmm UTC)
Location Type of surface Comments
1689 18 Aug 1850 - 1907 N of Brasilia Cerrado 4-5 banked circles then 1 circle for sky reflectivities. (See Hobbs' photos of surface on Roll #1 photos #8-11.)
1692 24 Aug 1552 - 1924 N of Cuiaba (Smoke) Measurements over, in, and under smoke
1693 25 Aug 1905 - 2001 W and N of Cuiaba Uniform forest Surface reflectivity measurements. (See Hobbs' photos on Roll #2 photos #10-11 and #13-15.)
1701 6 Sep 1337 - 1414 NE of Porto Velho Dense forest below Measurements above smoke, also sky radiance measurements.
1703 7 Sep 1809 - 1840 Reservoir at Repressa Samuel Dark water plus marshy ground CAR pointing down and then up at sky. (See Hobbs' Roll 4 photo #24 and Roll 5 photo #1 for shots of terrain.)
1704 11 Sep ~1407 - 1425 SE of Porto Velho (Smoke) CAR pointed down onto uniform smoke layer
1709 14 Sep 2013 - 2241 Between Santarem and Maraba (Smoke) CAR pointing down onto very thin smoke layer at ~4500 ft. Good lidar profile.

Notes


Doug Burks
Last changed: 15 Apr 1996