Home /PRODUCTS /High Latitude L2 Sea and Sea Ice Surface Temperature
High Latitude L2 Sea and Sea Ice Surface Temperature
| IDENTIFICATION |
| Description | This product, in GHRSST compliant netCDF format, is a stand-alone High Latitude Level 2 Surface Temperature product. It consists of Sea and Sea Ice Surface temperatures (SST and IST) and an unvalidated test temperature field, Land Ice Surface Temperature (LIST) for the Greenland and Antarctic ice caps. The product covers the sea and ice areas polewards of latitudes 50N and 50S with 3-minute data segments in Level 2, with data processed and archived continuously throughout the day, as they become available (approximately 110 3-minute segments per day per hemisphere). The product is derived from Metop-A AVHRR data and cloud mask data using the PPS software from the NWC SAF. |
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| Product type | Near real time product |  |
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| Status | Operational |
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| Identifier | OSI-205 |
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| Acronym | L2 SST/IST |
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| Acronym for EDC (APNM) | OSSTIST2 |
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| Product navigator reference | EO:EUM:DAT:METOP:OSI-205 |
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| CHARACTERISTICS |
| Processing level | L2 |
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| Satellite input | METOP/AVHRR |
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| Frequency | Approximately 110 per day per hemisphere |
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| Timeliness | 3h |
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| Spatial coverage | Poleward of 50N/50S |
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| Spatial sampling | 1km |
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| Projection | Swath |
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| Characteristics & methods | SST: subskin temperature.
IST: skin temperature. Multispectral algorithms.
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| ACCURACY REQUIREMENTS |
| Thresold accuracy | SST bias: 1°C SST std: 1,5°C IST bias: 2.0 / 3.0°C IST std: 3.0 / 4.0°C |
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| Target accuracy | SST bias: 0.5°C SST std: 0.8°C IST bias: 1.0 / 1.5°C IST std: 1.5 / 2.0°C |
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| Optimal accuracy | SST bias: 0.1°C SST std: 0.3°C IST bias: 0.5 / 0.8°C IST std: 0.8 / 1.0°C |
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| Verification/validation method | SST: Comparison with buoy observations. IST: comp with IR radiometer and buoy obs, separately |
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| DATA ACCESS |
| OSI SAF Producer | Norwegian Meteorological Institute |
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| Diffusion mean(s) and format(s) | EUMETCast (NetCDF3)
MET Norway FTP Server (NetCDF3)
EDC (NetCDF3)
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| Link FTP server | MET FTP server |
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| VIEW MORE |
DOCUMENTATION |
| Product web page | Description | Product User Manual | PUM |
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| Algorithm Theoretical Baseline Document | ATBD |
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| Scientific Validation Report | SVR |
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| HISTORY, COMMENTS |
Operational since 26/01/2017 : available in NRT on FTP server and EUMETCast
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| Authorised to be operational/released | 26/04/2016 |
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| Declared operational/released | 26/01/2017 |
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| On EUMETCast since | 26/01/2017 |
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| In EDC since | 26/01/2017 |
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| First product date | 10/05/2016 |
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