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Level 1B
Instrument Performance History
High Saturation Brightness Temperature in the Sea Surface Temperature (SST) Bands (11 and 12 micrometers/Bands 31 and 32)
Description | L1B Impact | L2 Impact | Cause | Mitigation | Schedule | History
DESCRIPTION:
The brightness temperature for each resolution unit (DN) is twice as large as anticipated.
IMPACT TO L1B DATA SET:
None.
ESTIMATED IMPACT TO L2 SCIENCE PRODUCTS:
This data characteristic causes a complication in optimization of the Terra SST product.
CAUSE OF EFFECT:
Bands 31 and 32 have application to both surface temperature and fire detection studies. The MODIS Science Team expected that the Bands 31 and 32 would need dual electronic gains. However, Santa Barbara Research Group was able to meet all specifications with a single gain.
MITIGATION APPROACH/ADDED TESTING TO CHARACTERIZE EFFECT:
In LUT V2.4.3.1, the L_max values for bands 31 and 32 were increased to correspond to a saturation temperature of about 388K.
ESTIMATED SCHEDULE TO COMPLETE:
tbd.
HISTORY OF CHARACTERISTIC:
| Epoch Number |
Time Span | Version Number at start of epoch |
General Characteristics | Improvements | Documentation |
|---|---|---|---|---|---|
| 1 | Feb. 24, 2000 - August 5, 2000 2000055.1550 - 2000218.2206 |
2.3.2.0 | |||
| 2 | Aug. 18, 2000 - present 2000231.1640 - present |
2.4.3.1 | More data available after L_max values were increased. |
Description | L1B Impact | L2 Impact | Cause | Mitigation | Schedule | History
Please contact Jack Xiong with any technical questions concerning these pages.
Responsible Civil Servant:
Dr. Jack Xiong <Xiaoxiong.Xiong.1@gsfc.nasa.gov>
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Last Update: July 3, 2008