Infrared Atmospheric Sounding Interferometer Sea Surface Temperature

Operational Near real time product

Level 2 skin Sea Surface Temperature derived from IASI on Metop, global and provided in full-resolution swath (12 km at nadir to 40 km), in GHRSST compliant netCDF format.

Acronym : IASI SST
Product navigator reference :


OSI SAF producer : Météo-France
Identifier : OSI-208-b
Digital object identifier (DOI) 10.15770/EUM_SAF_OSI_NRT_2016
Citation : See at bottom
Processing level : L2P
Satellite input : METOP-B/IASI
Other input : L2P core IASI SST produced by EUMETSAT Secretariat
Temporal sampling : 480 per day (each 3 min)
Timeliness : ? The timeliness is the time elapsing from the sensing time of the last contributing file to the product dissemination to users. It is similar to the latency. 4 h
Spatial coverage : Global
Spatial sampling : 12 to 40 km
Projection : Swath
File Formats : LML FTP Server (NetCDF4), EUMETCast (NetCDF4)
Characteristics & methods : IASI L2 package
Data Access
Credentials for access to OSI SAF tools For the FTP and HTTPS access, you need credentials which are provided on request, after registration on OSI SAF web site.

OSI SAF FTP (main, full archive)

Directory: cersat-rt/project/osi-saf/data/sst/l2p/global/

OSI SAF backup FTP (last 7 days)

Directory: cersat-rt/project/osi-saf/data/sst/l2p/global/

EUMETSAT Multicast

Redistribution by PO.DAAC

Accuracy Requirements
Target accuracy : monthly absolute mean difference: 0.5 K, standard deviation : 0.8 K
Verification/validation method : routine comparison with drifting buoy measurements
Applications and users
Usage : Atmosphere and ocean models.
Authorised to be operational / released :
Declared operational / released since :
On EUMETCast since :
On FTP server since :
First date :
Full series temporal coverage : 2014-onwards
Detailed history :

The product series is operational since 2014:

  • version OSI-208 (Metop-A) from 2014 to 23/02/2016
  • version OSI-208-b (Metop-B) from 23/02/2016 onwards

Updated on 20/06/2017 following L2Pcore product update : greater yield of useful retrievals (essentially of quality class 3) are now available at mid and high latitudes + two extra experimental fields : dust cloud index, "obs minus calc" (OmC) which is used to stratify the quality of the L2P SST retrievals.

Citation : OSI SAF Infrared Atmospheric Sounding Interferometer Sea Surface Temperature (Metop-B) 2016-onwards, OSI-208-b, doi:10.15770/EUM_SAF_OSI_NRT_2016. EUMETSAT Ocean and Sea Ice Satellite Application Facility. Data extracted from [distributor/distribution mean]: ([extracted period],) ([extracted domains],) accessed [download date]

The content within square brackets "[…]" is to be replaced with whatever distributor, period, domain or download date is relevant to the data being used. The "extracted period" and "extracted domains" are only needed if a subset of the data is being used.
Suggestions for "distributor/distribution mean": OSI SAF FTP server/the EUMETSAT Data Centre/EUMETCast/name and URL of a redistributor...
  • This product format is compliant with the Data Specification (GDS) version 2 from the Group for High Resolution Sea Surface Temperature (GHRSST).

    GHRSST identifier (collection id): IASI_SST_METOP_B-OSISAF-L2P-v1.0

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