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 access, please use the username anonymous.

OSI SAF FTP (main, full archive)

Directory: ifremer/cersat/projects/osisaf/sst/l2p/global/

OSI SAF backup FTP (last 7 days)

Directory: ifremer/cersat/projects/osisaf/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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