Sea Surface Temperature (SST)

The IASI Sea Surface Temperature product (IASI SST) is a monthly (L3), 1×1 degree global dataset of skin temperatures over the sea derived from the IASI satellite radiances data. The data was computed using Planck’s law and simple atmospheric corrections (Parracho et al., 2020 – under review). This method was applied to reprocessed IASI L1C data, in order to produce a homogeneous SST data record from 2008 to the present. The dataset consists of monthly mean TXT files of around 370 KB each (total 52,7 MB for the 2008-2019 period). Each file is a grid organized by latitude (-90 to 89 °N) and longitude (-180 to 180 °E). The land and sea ice grid points are filled using NaN. Size of the grid: 180 lines and 361 columns. Separator : space. Unit : Kelvin.

The version number is 1.0.

Metop-A data are available from January 2008.


Data Access :

Publication : Parracho, A.C., Safieddine S., Lezeaux O., Clarisse L., Whitburn S., George M., Prunet P., and Clerbaux C., IASI-derived sea surface temperature dataset for climate studies, Earth and Space Science, under review.

Contact : Ana Parracho (, Sarah Safieddine ( or Cathy Clerbaux (

Citation : Parracho, A. C., & Safieddine, S. (2020). IASI-FT Sea Surface Temperature (from IASI/Metop-A) [Data set]. LATMOS.

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