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Level 1B Product Information and Status
The Level 1B Code generates data products containing calibrated radiances for all 36 MODIS bands and reflectances for the reflective Solar bands (Bands 1 through 19 and 26). The MODIS Terra L1B Version 3.0 and higher software is considered validated.
Collection 5 has supplanted Collection 4. Collection 4 processing has halted and the Level 1B products are not available.
Using the PGE02 version 5.0.6.34 LUT in MODAPS production, a Terra Level 1B data processing failure occurred on day 2007-09-17 at 19:35UT when the linearly-interpolated RVS_correction values for Band 8 fell below a hard-coded limit. SeaWiFS production encountered the same problem starting on 2007-09-18 at 09:45UT. A code fix was implemented as version 5.0.38 and data production was resumed during the evening on 2007-09-20.
Click links for Change History document
| Collection
005 |
Forward Processing | Reprocessing | |||
|---|---|---|---|---|---|
| Terra |
Aqua |
Terra |
Aqua |
||
| Current L1B Code | PGE02 Version |
||||
| Began Production |
January 24, 2008 |
January 23, 2008 |
March 8, 2005 |
July 14, 2005 |
|
| First Granule(s) Processed |
January 24, 2008 (Day2008024) 00:00 UT |
January 23 , 2008
(Day 2008023) 00:00 UT |
March 5, 2000 (Day 2000065) 00:00UT |
July 9, 2002 (Day 2002190) 00:00 UT |
|
| Current L1B LUTs | Version |
||||
| Began Production |
May 23, 2009 |
May 19, 2009 |
October 31 , 2007 |
November 2, 2007 |
|
| First Granule(s) Processed |
May 23, 2009,
(Day 2009143) 00:00 UT |
May 19, 2009,
(Day 2009139) 00:00 UT |
May 10, 2003,
(Day 2003130) 00:00 UT |
May 13 , 2003(Day 2003133) 00:00 UT |
|
Collection 5 Terra/Aqua LUT Spreadsheets Version 5.0.40.24/5.0.35.12
Collection 6 Terra/Aqua LUT Spreadsheets Version 6.1.0.1/6.1.1.1
Product Explanatory Documents for both MODIS/Terra and MODIS/Aqua
| V4.3.0/V4.3.1 (MS Word) |
V4.3.0/V4.3.1 (PDF) |
V5.0.6/V5.0.7 (MS Word) |
V5.0.6/V5.0.7 (PDF) |
V6.1.0/V6.1.1
|
|
|---|---|---|---|---|---|
| Level 1B Product User's Guide | download | ||||
| Level 1B Product Data Dictionary | download | ||||
| LUT Information Guide | download | ||||
| High-Level Code Design Document | download |
Product File Specifications
| V4.3.0 (Terra) | V4.3.1 (Aqua) | V5.0.6 (Terra) | V5.0.7 (Aqua) | |
|---|---|---|---|---|
| Level 1B 1km | MOD021KM |
MYD021KM |
MOD021KM |
MYD021KM |
| Level 1B 500m | MOD02HKM |
MYD02HKM |
MOD02HKM |
MYD02HKM |
| Level 1B 250m | MOD02QKM |
MYD02QKM |
MOD02QKM |
MYD02QKM |
| Level 1B OBC On-Board Calibrator |
MOD02OBC |
MYD02OBC |
MOD02OBC |
MYD02OBC |
Level
1A File Specifications
Level
1A Geolocation File Specifications
Please note that file specifications are in effect for the specified
release and higher.
File specifications and other documentation for earlier releases may
be obtained at our public ftp site.
Instrument Performance
CAUTION! The sensor operational configuration, detector biases, and lookup table parameters are time-dependent quantities that have been changed to optimize sensor performance. More information on these factors that affect data quality is available by navigating to Aqua MODIS Instrument Performance History or Terra MODIS Instrument Performance History. Following the Terra MODIS recovery on March 28, 2002, MCST noticed minor instrument performance differences that may impact the quality of products that are sensitive to mirror-side differences. Caution is warranted. We welcome your comments to Jack Xiong, Gary Toller, or James Kuyper.
MAIN PAGEMODIS INFOINSTRUMENT OPS
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Level 1B Product Information and Status |
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The Level 1B Code generates data products containing calibrated radiances for all 36 MODIS bands and reflectances for the reflective Solar bands (Bands 1 through 19 and 26). The MODIS Terra L1B Version 3.0 and higher software is considered validatedJune 3, 2009B_OVERVIEW.html">MODIS June 3, 2009evel 1B Software June 3, 2009 1B Lookup Table Status Collection 5 has supplanted Collection 4. Collection 4 processing has halted and the Level 1B products are not available. Using the PGE02 version 5.0.6.34 LUT in MODAPS production, a Terra Level 1B data processing failure occurred on day 2007-09-17 at 19:35UT when the linearly-interpolated RVS_correction values for Band 8 fell below a hard-coded limit. SeaWiFS production encountered the same problem starting on 2007-09-18 at 09:45UT. A code fix was implemented as version 5.0.38 and data production was resumed during the evening on 2007-09-20. Click links for Change History document
Collection 5 Terra/Aqua LUT Spreadsheets Version 5.0.40.24/5.0.35.12 Collection 6 Terra/Aqua LUT Spreadsheets Version 6.1.0.1/6.1.1.1 Product Explanatory Documents for both MODIS/Terra and MODIS/Aqua
Product File Specifications
Level
1A File Specifications Please note that file specifications are in effect for the specified
release and higher. Instrument PerformanceCAUTION! The sensor operational configuration, detector biases, and lookup table parameters are time-dependent quantities that have been changed to optimize sensor performance. More information on these factors that affect data quality is available by navigating to Aqua MODIS Instrument Performance History or Terra MODIS Instrument Performance History. Following the Terra MODIS recovery on March 28, 2002, MCST noticed minor instrument performance differences that may impact the quality of products that are sensitive to mirror-side differences. Caution is warranted. We welcome your comments to Jack Xiong, Gary Toller, or James Kuyper. |
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