7/13/04 Shaida Johnston MODIS Science Team Meeting 1 Current MODIS Data System: Processing, Archiving and Distribution Shaida Johnston July 13, 2004.

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Presentation transcript:

7/13/04 Shaida Johnston MODIS Science Team Meeting 1 Current MODIS Data System: Processing, Archiving and Distribution Shaida Johnston July 13, 2004

7/13/04 Shaida Johnston MODIS Science Team Meeting 2 Contents Overview of MODIS data system What are the current MODIS products? Where are MODIS products processed? Which data products are in the MODIS archives? Through what mechanisms are MODIS data distributed? What tools and services are available to MODIS data users? Who can one contact with questions? Acronym list

7/13/04 Shaida Johnston MODIS Science Team Meeting 3 EDOS Process L0 GES DAAC Ingest L0, Archive & (Re)Process L1 Ingest GMAO Data GMAO NOAA & FDD MODAPS (Re)Process L2+ SCFs L2+ Validation GES DAAC LP DAAC Archive & Distribute L1, Ocean SST, Atmosphere L2+ and GMAO, ancillary data Archive & Distribute Land Data NSIDC DAAC Archive & Distribute Snow & Ice DAACs GMAO Data L0 Data 72 GB Ancillary Data L1, L2+ Data L1 Data QA Metadata Update QA Metadata Update L1 Data 220 GB GMAO & Ancillary Data L2+ Data 410 GB Data Products MODIS Data Flow MCST Calibration & L1 Validation -UMD(3) -GSFC(3) -UMiami SeaWiFS/OCDPS Process, Archive & Distribute Aqua Ocean Color NOAA/ Bent Pipe at GSFC AquaTerra Ocean Color Products -BU(2) -UCSB RT Users Data volumes represent forward processing of 1 MODIS instrument (1x) per day

7/13/04 Shaida Johnston MODIS Science Team Meeting 4 Current Products - Level 1

7/13/04 Shaida Johnston MODIS Science Team Meeting 5 Current Products - Atmosphere

7/13/04 Shaida Johnston MODIS Science Team Meeting 6 Current Products - Land

7/13/04 Shaida Johnston MODIS Science Team Meeting 7 Current Products - Cryosphere & Intermediate Land

7/13/04 Shaida Johnston MODIS Science Team Meeting 8 Terra Ocean Products Feb Jan * * * Feb Present

7/13/04 Shaida Johnston MODIS Science Team Meeting 9 Ocean (Standard) Product Parameters 1 nLw_412/Normalized water-leaving radiance at 412 nm 2nLw_443/Normalized water-leaving radiance at 443 nm 3nLw_488/Normalized water-leaving radiance at 488 nm 4nLw_531/Normalized water-leaving radiance at 531 nm 5nLw_551/Normalized water-leaving radiance at 551 nm 6nLw_667/Normalized water-leaving radiance at 667 nm 7nLw_678/Normalized water-leaving radiance at 678 nm 8Tau_869/Aerosol optical thickness at 869 nm 9Eps_78/Epsilon of aerosol correction at 748 and 869nm 10aer_model1/Aerosol model identification number 1 11aer_model2/Aerosol model identification number 2 12eps_clr_water/Epsilon of clear water aerosol correction at 531 and 667 nm 13CZCS_pigment/Chlorophyll-a + pheopigment (fluorometric, empirical) 14chlor_MODIS/Chlorophyll-a concentration (HPLC, empirical) 13pigment_c1_total/Total pigment concentration (HPLC, empirical) 16chlor_fluor_ht/Chlorophyll fluorescence line height 17chlor_fluor_base/Chlorophyll fluorescence baseline 18chlor_fluor_effic/Chlorophyll fluorescence efficiency 19susp_solids_conc/Total suspended matter concentration in ocean 20cocco_pigmnt_conc/Pigment concentration in coccolithophore blooms 21cocco_conc_detach/Detached coccolithophore concentration 22calcite_conc/Calcite concentration 23K_490/Diffuse attenuation coefficient at 490 nm 24phycoeryth_conc/Phycoerythrobilin concentration* 25 phycou_conc/Phycourobilin concentration 26chlor_a_2/Chlorophyll-a concentration (SeaWiFS analog - OC3M) 27chlor_a_3/Chlorophyll-a concentration (semianalytic) 28Ipar/Instantaneous photosynthetically available radiation 29Arp/Instantaneous absorbed radiation by phytoplankton for fluorescence 30absorp_coef_gelb/Gelbstoff absorption coefficient at 400 nm 30chlor_absorb/ Phytoplankton absorption coefficient at 675 nm 31tot_absorb_412 /Total absorption coefficient at 412 nm 32tot_absorb_443 /Total absorption coefficient at 443 nm 34 tot_absorb_488/Total absorption coefficient at 488 nm 35 tot_absorb_531/Total absorption coefficient at 531 nm 36 tot_absorb_551/Total absorption coefficient at 551 nm 37 SST (daytime), 11 µm 38 SST (daytime), 4µm 39 SST (nighttime), 11 µm 40SST (nighttime), 4 µm Angstrom_531/ Angstrom coefficient, nm * Not maintained

7/13/04 Shaida Johnston MODIS Science Team Meeting 10 MODIS Data Processing Level 1 Ocean Atmosphere Land Cryosphere

7/13/04 Shaida Johnston MODIS Science Team Meeting 11 Archives of MODIS Data Data Pools* Ocean Atmosphere Level 1 Land Cryosphere *Data Pools are ‘rolling’ archives of fresh or high-interest data on disk

7/13/04 Shaida Johnston MODIS Science Team Meeting 12 Product Collections (Reprocessing Events) Coll. 3 Collection 1 Collection 4 Terra Aqua Solid Color=Reprocessing Dashed Color=Forward Processing Dates represent Data Dates Collection Collection 5 Collection 6 Collection 7 Collection 5/Combined Collection 6/Combined Collection 3 Collection 7/Combined

7/13/04 Shaida Johnston MODIS Science Team Meeting 13 Distribution Mechanisms

7/13/04 Shaida Johnston MODIS Science Team Meeting 14 In the Works EOSDIS Clearing HOuse ECHO –MODIS granules to populate by 8/04 at LP DAAC Open Data Access Protocol (Open DAP, formerly DODS) –L3 & L4 gridded data accessible –Supports subsetting –Matlab and IDL Clients MODIS On-line Visualization and Analysis System (MOVAS) –On-line atmospheres data –Emphasis on time series –Subsetting capability Near-Archive Data Mining (Experimental)

7/13/04 Shaida Johnston MODIS Science Team Meeting 15 Data Tools Available for Users » » MODIS Reprojection Tool (MRT) MODIS Land Data Operational Evaluation (LDOPE) MODIS Swath Reprojection Tool (MRT Swath) MODIS Atmospheres Tools MODIS Swath-to-Grid Toolbox (MS2GT) HDF-EOS to GeoTIFF Conversion Tool (HEG) HEW Subsetting Appliance (HSA)

7/13/04 Shaida Johnston MODIS Science Team Meeting 16 Data Access EOS Data Gateway (EDG) - NSIDC EDG: WHOM (for GES DAAC) - GES DAAC MODIS Data Support - LP DAAC - Mosaic of MOIDS Veg. Indices - NSIDC - NSIDC data pool: SNOWI: MODIS SNOWI: Ocean Color -

7/13/04 Shaida Johnston MODIS Science Team Meeting 17 Contacts

7/13/04 Shaida Johnston MODIS Science Team Meeting 18 Acronyms BRDF - Bidirectional Reflectance Distribution Function BU - Boston University DAAC - Distributed Active Archive Center ECHO - EOSDIS Clearing HOuse ECS - EOSDIS Core System EDG - EOS Data Gateway EDOS - EOS Data Operations System EOS - Earth Observing System EOSDIS - Earth Observing System Data Information System ESDIS - Earth Science Data and Information System (Project) FDD - Flight Dynamics Division FPAR - Fraction of absorbed Photosynthetically Active Radiation FTP - File Transfer Protocol GES DAAC - Goddard Earth Science DAAC GMAO - Global Modeling and Assimilation Office GSFC - Goddard Space Flight Center HDF - Hierarchical Data Format HEW - HDF-EOS Web-based subsetter L0, L1, L2, L3, L4 - Level 0,1, 2, 3, 4 (processing levels) LAI - Leaf Area Index LDOPE - Land Data Operational Evaluation LP DAAC - Land Processes DAAC MCST - MODIS Characterizaton Support Team MODAPS - MODIS Adaptive Processing System MODIS - Moderate Resolution Imaging Spectroradiometer MTMGW - Machine-to-Machine Gateway NOAA - National Oceanographic and Atmospheric Administration NSIDC - National Snow and Ice Data Center OBC- On-board Calibrator OC - Ocean Color OCDPS - Ocean Color Data Processing System QA - Quality Assurance SCF - Science Computing Facility SDST - Science Data Support Team SST - Sea Surface Temperature UCSB - University of California, Santa Barbara UMD - University of Maryland USGS - United States Geological Survey WHOM - Web Hierarchical Ordering Mechanism