1. PoDAG XXII: MODIS Status
Marilyn Kaminski
MODIS Product Team Lead
June 3, 2004

2. Basic MODIS Operations
Two instruments
EOS Terra, Dec ’99 launch, 10:30 am equatorial crossing (descending)
EOS Aqua, May ’02 launch, 1:30 pm equatorial crossing (ascending)
Instruments intended to be identical, but aren’t … especially for snow&sea ice products
Many sensors on Aqua Band 6 nonfunctional
Aqua snow and sea ice algorithms modified to use Band 7 instead
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

3. NSIDC’s Current MODIS Product Suite
Snow Products (Terra, Aqua)
MxD10_L2: Level 2 5-minute swath, 500 m
MxD10A1: Level 3 snow cover and snow albedo, daily, SIN grid, 500 m
MxD10A2: Level 3 snow cover, 8-day, SIN grid, 500 m
MxD10C1: Level 3 snow cover, daily, 0.05° CMG
MxD10C2: Level 3 snow cover, 8-day, 0.05° CMG
Sea Ice Products (Terra, Aqua)
MxD29: Level 2 5-minute swath, 1 km
MxD29P1D:Level 3 sea ice extent, daily, day, EASE-grid, 1 km
MxD29P1N:Level 3 sea ice extent, daily, night, EASE-grid, 1 km (MYD29P1N not yet released to public)
MxD29E1D:Level 3 sea ice extent and ice surface temperature, daily, EASE-grid, 4 km
Current Available Time Series:
Terra/Version 4 complete from Feb 2000 onward
Aqua/Version 4 from July 2002 onward (reprocessing complete by early July 2004)
Terra/Version 3 “golden month” (Sep 2002) to be retained for comparisons between versions
- MODxxxx = Terra products; MYDxxxx = Aqua products
- Most recent changes
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

4. Marilyn Kaminski, MODIS Product Team Lead June 3, 2004
Available MODIS tools
Data Access
EDG (complete archive)
Data Pool (most-recent granules only)
SNOWI (complete archive)
Subscription (current ingest only)
Browse
Integrated into EDG and Data Pool
Standalone web-based images
Data Manipulation
HSA (spatial subset, parameter subset)
HEG (reformat, reproject, spatial subset)
MS2GT (swath-to-grid conversion)
… plus many others
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

5. Marilyn Kaminski, MODIS Product Team Lead June 3, 2004
Available MODIS Tools
Product
Browse
HSA
HEG
MS2GT
MOD10_L2
Integrated
Yes
MYD10_L2
MOD10A1
MYD10A1
MOD10A2
MYD10A2
MOD10C1
Web-based
MYD10C1
MOD10C2
MYD10C2
MOD29
MYD29
MOD29P1D
MYD29P1D
MOD29P1N
MYD29P1N
MOD29E1D
MYD29E1D
Integrated Browse available for granules ordered through EDG or Data Pool; Version 4 will be backfilled with “historical browse”
HSA available for granules ordered only through EDG
HEG available for granules ordered only through Data Pool; will be available for most other products June 2004
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

6. MODIS Distribution (up to June 2003)
(presented at last PoDAG)
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

7. MODIS Distribution (Current)
FY03 (Oct 02 – Sep 03)
FY04 to date (Oct 03 – May 04)
Terra
# granules
# GB
186132
3274
64150
1428
Aqua
579 20
1429
114
(source: EDGRS, distribution to users)
Growth in Aqua distribution is expected
V3 had only 2 products released
V4 all products released as of 2/13/04
Apparent decrease in Terra distribution is under investigation
- Number of users has increased significantly
May be “pilot error” … not compiling statistics from all distribution options (archive, data pool, subscriptions)? MODIS has minimal data pool distribution but significant subscription distribution
NSIDC internal statistics show same trend although different totals
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

8. NSIDC Near-Term Enhancements
Version 5 reprocessing to start ~Apr 2005 – Terra and Aqua
Snow in Polar Grid
Monthly Products
Fractional Snow Cover (500 m)
HDF Compression
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004

9. Marilyn Kaminski, MODIS Product Team Lead June 3, 2004
Summary
MODIS products and tools have improved significantly
Increased availability of integrated tools will enhance users’ ability to easily locate and retrieve data in areas of interest
PoDAG XXII
Marilyn Kaminski, MODIS Product Team Lead June 3, 2004