Current Status of MODIS (Terra and Aqua) by Chuck Trees for the MODIS Team Members . 8th IOCCG Meeting in Florence, Italy (24-26 Feb 03). Brief MODIS History. Definition Panel 1984 Selection of Instrument, Instrument Team - 1989 Restructuring - 1992
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(Terra and Aqua)
Chuck Trees for the
MODIS Team Members
8th IOCCG Meeting in Florence, Italy
(24-26 Feb 03)
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MODIS SST Buoy and M-AERI retrieval StatisticsVersion 4.5 (new delivery)median = satellite - reference [MAERI or BUOY]BUOY M-AERI
Median StdDev Number
Nearly Complete Single Day Global CoverageComposite Night (MODIS-T, MODIS-A) Day, Night - (AMSR, TMI) Prototype Sept 29, 2002, 0.25O spatial resolution
1. Calibration issues and discontinuities will be corrected for time period of Sept. 2001 - Dec 2002
January 19, 2003
full time series available in SeaWiFS 9km format
Valid period 305-800
Comparison of MODIS Chlorophyll ProductsJune 2001Chlor_a_2 Chlor_a_3 (empirical) (semi-analytical)
Note that Chlor_a_3 results are similar for northern subtropics, but higher north of 40o N and for upwelling areas, where it has adjusted to higher-nutrient effects.
Gregg and Casey, in progress
NODC + SeaBASS, L-3 4.6km
Quality Level 0, 1
Chlor_a_2 virtually identical performance as for SeaWiFS
r2 = 0.757 n=1.6K vs 0.759 n>4.5K
Semi-analytic Chlor_a_3 shows improvement
r2 = 0.784
Regional analysis is underway.
Watson Gregg & Nancy McCabe
Validated data period
Above: Mixed layer Ocean Production Index P2
Standard MODIS Product Collection 4
South Atlantic 10S° to 50°S
Esaias et al. Poster:
Compares Ocean Production using
different chlorophyll algorithms
two production models
MODIS Semi-analytic chlorophyll results in 2 x greater production in the key Southern Ocean regions, and phase differences, global total between 57 and 59 GT C.
SeaWiFS/MODIS differences are relatively small.
Antarctic, S of 50°S
Terra ONPP time series using chlorophyll from SeaWiFS (green), MODIS Chlor_a_2(SeaWiFS analog) (black),
Chlor_MODIS(red), MODIS Chlor_a_3 Semi-analytic chlorophyll(blue) for global and 2 SO regions.
MODIS Oceans home page
MODIS Oceans QA Browse 36km Imagery (MQABI)
Select Terra collection 4
Useful links to documentation and related web pages
Data Ordering locations:
NASA GES DAAC WHOM (NASA - Goddard DAAC)
EOS DATA GATEWAY EDG