NASA logo and link
EOSPSO logo and link
ASP logo and link
MAS Banner image

MODIS Airborne Simulator (MAS)


Smoke, Clouds, and Radiation - Brazil
Dates: 13 August - 11 September 1995
Location: Central Brazil
Principal Investigators: Dr. Yoram Kaufman (NASA GSFC)
Additional Sensors: AVIRIS & CLS
Objective: Characterize the the relationship between sulfate particles and cloud reflective properties. Study the impact of biomass burning and urban/industrial aerosol on the atmosphere and climate by measuring the properties of urban and industrial pollution dominated by sulfate particles.

Processing Information
Flights Processed: 12 of 12
Total Flight Tracks:
Total Scanlines:
Level-1B Version: #9
Calibration Type: Final
Calibration Version: SCAR-B_King 1.0
Temperature Adjustment: 24C
Status: Level-1B Data in HDF format is available.

Noted Irregularities

SCAR-B Study Area
Spectral Information
Spectral Band Configuration
Spectral Response Function Table

Level-1B Data Distribution
Langley Research Center (LaRC)
Level 1 / Atmosphere Archive and Distribution System (LAADS)
NASA Distributive Active Archive Centers (DAACs)

SCAR-B Missions
Click on a Track Map to view a particular mission
August 1995
13 Aug 1995
Flight: 95-158
16 Aug 1995
Flight: 95-160
18 Aug 1995
Flight: 95-161
20 Aug 1995
Flight: 95-162
23 Aug 1995
Flight: 95-163
25 Aug 1995
Flight: 95-164
27 Aug 1995
Flight: 95-165
30 Aug 1995
Flight: 95-166
September 1995
01 Sep 1995
Flight: 95-167
04 Sep 1995
Flight: 95-168
07 Sep 1995
Flight: 95-169
11 Sep 1995
Flight: 95-170
Related Web Sites
Official SCAR-B Home Page
AVIRIS Home Page
CLS Home Page
NASA Airborne Science Program

Noted Irregularities
  • There were a number of MAS port 4 (channels 42-50) failures due to mechanical problems with the instrument, affecting most missions during SCAR-B. Data gaps in the port 4 bands have missing calibration coefficients and the Calibrated Radiance data is set to 0.
  • When the plane comes out of a steep roll into a straight and level flight track it may take several seconds for the MAS instrument to fully stabilize. This could cause some smearing of data at the very beginning of a few flight lines, generally affecting the first 20 scanlines or so.
  • There is an anomaly affecting the 3.9µm, 3.7µm, and 1.6µm channels that runs the entire length of a flight line, located at pixels 477-478 (note: pixel range is 1-716). This was due to periodic electrical noise from the insturment being passed to the data recording system.
page title background image


  • + HOME
Sample Imagery
Click image for full resolution
Flight: 95-163, Track #17
Central Brazil
Click to load the full resolution image Flight: Direction Indicator
R: 2.14µm
G: 1.62µm
B: 0.55µm