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MODIS SST Processing and Support for GHRSST at OBPG

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Presentation on theme: "MODIS SST Processing and Support for GHRSST at OBPG"— Presentation transcript:

1 MODIS SST Processing and Support for GHRSST at OBPG
Bryan Franz NASA Ocean Biology Processing Group Goddard Space Flight Center

2 OBPG SST Activities MODIS/Aqua MODIS/Terra VIIRS/NPP
global daytime SST production operational since early 2004 day/night production and distribution, transitioning from MODAPS/DAAC intermediate Level-2 production for GHRSST community processing and display support through SeaDAS MODIS/Terra global production and distribution, transitioning from MODAPS/DAAC VIIRS/NPP oceans PEATE (Product Evaluation and Test Element)

3 Operational MODIS-Aqua Data Flow
NASA EDOS System Software process Hardware system Database table Ancillary input data July 18, 2018 NOAA Realtime System User Community MET Full-resolution day- and nighttime via SEN (~60 GB per day) MET, Ozone, and OISST data are dynamically selected for each L1A granule Ozone Level-0 Ingest MODISA L2 table L1B-L2 (MSl12) OISST Ocean Color Web Server Archive - Distrib Server Sensor CAL Ingest queue table L1A-L1B (MOD_PR02) Sensor attribs Browser CGI / httpd MODISA L3-bin table Atm corr L3BIN (l2bin) Archive - Distrib Server ATT/EPH Ingest process Archive - Distrib Server MySQL DB Geo-Location (MOD_PR03) MODISA atteph table MODISA L3-map table L3MAP (smigen) Product meta data are populated from production DB Archive - Distrib Server L0 Ingest process Archive - Distrib Server Archive - Distrib Server L0-L1A (MOD_PR01) MODISA L0 table MODISA L1 table

4 Operational MODIS-Aqua Data Flow
NASA EDOS System Level-2 Production Ocean Color (day) SST SST4 GHRSST Software process Hardware system Database table Ancillary input data July 18, 2018 NOAA Realtime System User Community MET Full-resolution day- and nighttime via SEN (~60 GB per day) MET, Ozone, and OISST data are dynamically selected for each L1A granule Ozone Level-0 Ingest MODISA L2 table L1B-L2 (MSl12) OISST Ocean Color Web Server Archive - Distrib Server Sensor CAL Ingest queue table L1A-L1B (MOD_PR02) Sensor attribs Browser CGI / httpd MODISA L3-bin table Atm corr L3BIN (l2bin) Archive - Distrib Server ATT/EPH Ingest process Archive - Distrib Server MySQL DB Geo-Location (MOD_PR03) MODISA atteph table MODISA L3-map table L3MAP (smigen) Product meta data are populated from production DB Archive - Distrib Server L0 Ingest process Archive - Distrib Server Archive - Distrib Server L0-L1A (MOD_PR01) MODISA L0 table MODISA L1 table

5 Operational MODIS-Aqua Data Flow
NASA EDOS System Level-2 Production Ocean Color (day) SST SST4 GHRSST Software process Hardware system Database table Ancillary input data July 18, 2018 NOAA Realtime System User Community MET Full-resolution day- and nighttime via SEN (~60 GB per day) MET, Ozone, and OISST data are dynamically selected for each L1A granule Ozone Level-0 Ingest MODISA L2 table L1B-L2 (MSl12) OISST Ocean Color Web Server Archive - Distrib Server Sensor CAL Ingest queue table L1A-L1B (MOD_PR02) Sensor attribs Browser CGI / httpd MODISA L3-bin table Atm corr L3BIN (l2bin) Archive - Distrib Server ATT/EPH Ingest process Archive - Distrib Server MySQL DB Geo-Location (MOD_PR03) MODISA atteph table Level-3 Production Ocean Color (day) SST SST4 MODISA L3-map table L3MAP (smigen) Product meta data are populated from production DB Archive - Distrib Server L0 Ingest process Archive - Distrib Server Archive - Distrib Server L0-L1A (MOD_PR01) MODISA L0 table MODISA L1 table

6 MODIS SST Interaction RSMAS GHRSST Users PO.DAAC OBPG Science
algorithm development and coefficient updates error fields (tables) quality assessment algorithms GHRSST Users coefficients L2P error tables PO.DAAC GHRSST product reformatting and ancillary merge (L2P) GHRSST L2P distribution Level-3 distribution recommendation evaluation & OBPG software development and algorithm integration production processing quality assessment archive & distribution Level-3 Standard Level-3 Standard Products Level-2 GHRSST Products Level-2 & Level-3 Standard Products Science Community Evaluation & Recommendation Processing & Display Software

7 Transition of MODIS/Aqua SST Processing from MODAPS to OBPG
expansion of Level-1A archive to include night granules (completed) incorporation of RSMAS-provided algorithm coefficients and quality tests into MSL12 (completed) enhancements to MSL12 for night granule processing and 4um SST capability (completed) verification of implementation

8 Daytime 11-12um SST MODAPS (modsst) OBPG (msl12)

9 Daytime 11-12um SST (OBPG - MODAPS)
Differences Brightness Temperature Differences

10 Daytime 4um SST MODAPS (modsst) OBPG (msl12)

11 Daytime 4um SST (OBPG - MODAPS)
Differences Brightness Temperature Differences

12 Nighttime 4um SST MODAPS (modsst) OBPG (msl12)

13 Nighttime 4um SST (OBPG - MODAPS)
Differences Brightness Temperature Differences

14 Nighttime 11-12um SST MODAPS (modsst) OBPG (msl12)

15 Nighttime 11-12um SST (OBPG - MODAPS)
Differences Brightness Temperature Differences

16 Nighttime 11-12um SST MODAPS (modsst) Quality Levels

17 SST Quality Flags SST Quality Levels

18 Nighttime 11-12um SST Quality
MODAPS (modsst) OBPG (msl12)

19 Nighttime 11-12um SST Quality
“Collection 5” Changes Collection 4 Collection 5

20

21 Status of MODIS SST Standard Production
MODAPS nearing completion of Collection 5 reprocessing. OBPG is now generating Level-3 SST & SST4, Day and Night products for Terra and Aqua in forward stream, with quality similar to Collection 5 MODAPS. Need to develop a global quality assessment strategy with RSMAS. OBPG would like to finalize initial processing plans for MODIS/Aqua SST, to present at MODIS Science Team meeting of Jan 3-6, with possible completion of full mission reprocessing by end of February.

22 Level-2 Processing for GHRSST
Level-2 products are currently being generated Aqua and Terra, day and night operational since 14 October content is preliminary

23 Intermediate Level-2 GHRSST File Content
Possible additions: AOT: what wavelength, what source ? SSI: need an algorithm or preferred global source. Proximity to cloud: no reliable method to detect cloud. Proximity to ice: need preferred source for ice. Error Fields: method to be provided by RSMAS.

24 MODIS GHRSST Level-2 Files Distribution and Latency
Files distributed to JPL via rolling ftp archive Quicklook (best available ancillary) Refined (best ancillary, e.g. Reynolds) Operational since 14 October Aqua (ftp:// oceans.gsfc.nasa.gov/MODISA/GHRSST/) Quicklook, average latency 4 hours, 52 minutes Refined, available within 2-8 days Terra (ftp:// oceans.gsfc.nasa.gov/MODIST/GHRSST/) Quicklook, average latency 4 hours, 38 minutes

25 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

26 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

27 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

28 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

29 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

30 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

31 OBPG Responsibilities for MODIS SST & GHRSST
Processing will build on the Aqua MODIS data stream already implemented at OBPG (11µm, daytime). This will be extended to night-time 11µm SST retrievals. The 4µm SST fields will be added to the data stream, including the option to produce daytime data. The RSMAS cloud masking methodology will be implemented for both day-time and night-time data streams. OBPG will work with RSMAS in the testing of the integrity of the SST fields (i.e. there should be no significant difference in the products that are generated at MODAPS and those at OBPG when the same algorithms are implemented). OBPG will work with RSMAS to implement the GHRSST-specific, L2 processing code. To include both 11 µm (SST) and 4 µm (SST4) through implementation of SST and quality assessment algorithms developed at RSMAS. OBPG will work with JPL to ensure the delivery of GHRSST MODIS granules to JPL PO.DAAC via network with the least possible delay (generally within 4-6 hours of satellite observation time as dictated by the availability of the Level-0 MODIS data from the NOAA realtime system.) The Terra MODIS data stream will be added as soon as the Aqua SST stream is successfully implemented and when directed to do so by NASA Headquarters.

32 OBPG Responsibilities for MODIS SST & GHRSST (on-going activities)
OBPG will work together with RSMAS to ensure the continuing accuracy of the SST fields, and implement upgrades to the processing algorithms and methodology when necessary. OBPG will work together with RSMAS to improve the efficacy of the cloud screening algorithms. OBPG will work with RSMAS on the periodic updating of algorithms and retrieval coefficients as required (anticipated to be no more than twice per year), and reprocess the past data to a consistent data set as necessary. OBPG will implement improved instrument models as recommended by MCST. OBPG will assemble L3 SST products (4km resolution with mutually agreed upon quality criteria ) for timely distribution to the SST community through the OBPG and JPL PO.DAAC. OBPG will provide archiving of the MODIS SST OBPG will support the web-based MODIS quality assurance utility (functions similar to MQABI) OBPG will implement MODIS SST algorithms in the SEADAS software suite using easily supported coding standards and methods.

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