# Presentation: 722802

## MODIS SST Processingand Support for GHRSSTat OBPG

- Bryan Franz
- NASA Ocean Biology Processing Group
- Goddard Space Flight Center

## OBPG SST Activities

**MODIS/Aqua**
- 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
- intermediate Level-2 production for GHRSST
- community processing and display support through SeaDAS
**VIIRS/NPP**
- oceans PEATE (Product Evaluation and Test Element)
- community processing and display support through SeaDAS

## Operational MODIS-Aqua Data Flow

- table

- L0
- Ingest
- process

- L1A-L1B
- (MOD_PR02)

- L1B-L2
- (MSl12)

- MODISA L2
- table

- Archive - Distrib
- Server

- L3BIN
- (l2bin)

- MODISA L3-bin
- table

- Archive - Distrib
- Server

- MODISA L3-map
- table

- Archive - Distrib
- Server

- Sensor
- CAL

- Sensor
- attribs

- Atm
- corr

- Browser
- CGI /
- httpd

- Ocean Color
- Web Server

- User
- Community

- MySQL
- DB

- Ozone

- L3MAP
- (smigen)

- MET

- MET, Ozone, and OISST data are dynamically selected for each L1A granule

- Product meta data are populated from production DB

- OISST

- Level-0
- Ingest

- MODISA L0
- table

- Archive - Distrib
- Server

- ATT/EPH
- Ingest
- process

- MODISA atteph
- table

- Archive - Distrib
- Server

- L0-L1A
- (MOD_PR01)

- Geo-Location
- (MOD_PR03)

- MODISA L1
- table

- Archive - Distrib
- Server

- Full-resolution day- and nighttime via SEN (~60 GB per day)

- NOAA Realtime
- System

- NASA EDOS
- System

## Operational MODIS-Aqua Data Flow

- table

- L0
- Ingest
- process

- L1A-L1B
- (MOD_PR02)

- L1B-L2
- (MSl12)

- MODISA L2
- table

- Archive - Distrib
- Server

- L3BIN
- (l2bin)

- MODISA L3-bin
- table

- Archive - Distrib
- Server

- MODISA L3-map
- table

- Archive - Distrib
- Server

- Sensor
- CAL

- Sensor
- attribs

- Atm
- corr

- Browser
- CGI /
- httpd

- Ocean Color
- Web Server

- User
- Community

- MySQL
- DB

- Ozone

- L3MAP
- (smigen)

- MET

- MET, Ozone, and OISST data are dynamically selected for each L1A granule

- Product meta data are populated from production DB

- OISST

- Level-0
- Ingest

- MODISA L0
- table

- Archive - Distrib
- Server

- ATT/EPH
- Ingest
- process

- MODISA atteph
- table

- Archive - Distrib
- Server

- L0-L1A
- (MOD_PR01)

- Geo-Location
- (MOD_PR03)

- MODISA L1
- table

- Archive - Distrib
- Server

- Full-resolution day- and nighttime via SEN (~60 GB per day)

- NOAA Realtime
- System

- NASA EDOS
- System

- _Level-2 Production_
- Ocean Color (day)
- SST
- SST4
- GHRSST

## Operational MODIS-Aqua Data Flow

- table

- L0
- Ingest
- process

- L1A-L1B
- (MOD_PR02)

- L1B-L2
- (MSl12)

- MODISA L2
- table

- Archive - Distrib
- Server

- L3BIN
- (l2bin)

- MODISA L3-bin
- table

- Archive - Distrib
- Server

- MODISA L3-map
- table

- Archive - Distrib
- Server

- Sensor
- CAL

- Sensor
- attribs

- Atm
- corr

- Browser
- CGI /
- httpd

- Ocean Color
- Web Server

- User
- Community

- MySQL
- DB

- Ozone

- L3MAP
- (smigen)

- MET

- MET, Ozone, and OISST data are dynamically selected for each L1A granule

- Product meta data are populated from production DB

- OISST

- Level-0
- Ingest

- MODISA L0
- table

- Archive - Distrib
- Server

- ATT/EPH
- Ingest
- process

- MODISA atteph
- table

- Archive - Distrib
- Server

- L0-L1A
- (MOD_PR01)

- Geo-Location
- (MOD_PR03)

- MODISA L1
- table

- Archive - Distrib
- Server

- Full-resolution day- and nighttime via SEN (~60 GB per day)

- NOAA Realtime
- System

- NASA EDOS
- System

- _Level-2 Production_
- Ocean Color (day)
- SST
- SST4
- GHRSST

- _Level-3 Production_
- Ocean Color (day)
- SST
- SST4

## MODIS SST Interaction

- Community

- PO.DAAC
- GHRSST product reformatting and ancillary merge (L2P)
- GHRSST L2P distribution
- Level-3 distribution

- OBPG
- software development and algorithm integration
- production processing
- quality assessment
- archive & distribution

- RSMAS
- algorithm development and coefficient updates
- error fields (tables)
- quality assessment

- Level-3 Standard Products

- Level-2 GHRSST Products

- Level-2 & Level-3 Standard Products

- Level-3
- Standard

- coefficients

- error tables

- evaluation &
- recommendation

- Evaluation & Recommendation

- L2P

- GHRSST
- Users

- algorithms

- Processing & Display Software

## 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

## Daytime 11-12um SST

- MODAPS (modsst)

- OBPG (msl12)

## Daytime 11-12um SST (OBPG - MODAPS)

- SST
- Differences

- Brightness Temperature Differences

## Daytime 4um SST

- MODAPS (modsst)

- OBPG (msl12)

## Daytime 4um SST (OBPG - MODAPS)

- SST
- Differences

- Brightness Temperature Differences

## Nighttime 4um SST

- MODAPS (modsst)

- OBPG (msl12)

## Nighttime 4um SST (OBPG - MODAPS)

- SST
- Differences

- Brightness Temperature Differences

## Nighttime 11-12um SST

- MODAPS (modsst)

- OBPG (msl12)

## Nighttime 11-12um SST (OBPG - MODAPS)

- SST
- Differences

- Brightness Temperature Differences

## Nighttime 11-12um SST

- MODAPS (modsst)

- Quality Levels

## SST Quality Flags

- SST Quality Levels

## Nighttime 11-12um SST Quality

- MODAPS (modsst)

- OBPG (msl12)

## Nighttime 11-12um SST Quality

- “Collection 5” Changes

- Collection 4

- Collection 5

## Slide 20

## 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.

## 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

## 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.

## 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
- Refined, available within 2-8 days

## 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.

## 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.

## 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.

## 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.

## 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.

## 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.

## 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.

## 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.