dataset : NOAA Merged Land–Ocean Surface Temperature Analysis (MLOST)

National Oceanic and Atmospheric Administration National Centers for Environmental Information NCEI


NOAA Merged Land–Ocean Surface Temperature Analysis (MLOST)
Version 3b.

The Merged Land–Ocean Surface Temperature Analysis (MLOST) is a spatially gridded (5º x 5º) global surface temperature dataset, with monthly resolution from January 1880 to present. NCDC combines a global sea surface (water) temperature (SST) dataset with a global land surface air temperature dataset into this merged dataset of both the Earth’s land and ocean surface temperatures. The SST dataset is the Extended Reconstructed Sea Surface Temperature (ERSST) version 3b ( The land surface air temperature dataset is similar to ERSST, but uses data from the Global Historical Climatology Network Monthly (GHCNM) ( database. NCDC provides the MLOST dataset as temperature anomalies, relative to a 1971–2000 monthly climatology, following the World Meteorological Organization convention. The MLOST anomalies and error fields are available from NCDC’s FTP area ( and Climate Monitoring group (

The time range for this dataset starts at January 01, 1880 (00:33 AM).

The spatial range for this dataset is -87.5° to 87.5° latitude, and -177.5° to 177.5° longitude. map (center)


When citing this dataset please refer to Smith, T.M., R.W. Reynolds, T.C. Peterson, and J. Lawrimore, 2008: Improvements to NOAA's Historical Merged Land–Ocean Surface Temperatures Analysis (1880–2006); Journal of Climate, 21, 2283–2296, doi: . Vose, R.S., D. Arndt, V.F. Banzon, D.R. Easterling, B. Gleason, B. Huang, E. Kearns, J.H. Lawrimore, M.J. Menne, T.C. Peterson, R.W. Reynolds, T.M. Smith, C.N. Williams, Jr., and D.L. Wuertz, 2012: NOAA's merged land-ocean surface temperature analysis. Bulletin of the American Meteorological Society, 93, 1677–1685, doi:10.1175/BAMS-D-11-00241.1.

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