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OAFlux 1° Analysis of 60+ Years


Update: 2023-February-16

  • OAFlux global ocean evaporation, latent/sensible heat fluxes, and related surface meteorology are now extended to 2022-DEC-31. Please note that data format has been changed since 2016. Feel free to contact us ( if there is any question.

  • 2021-June-01: OAFlux global ocean evaporation, latent/sensible heat fluxes, and related surface meteorology have been updated to 2021-MAR-31.


Available products:

(1)  1° gridded daily-mean (1985 onward) and monthly-mean (1958 onward):

  • latent heat flux (positive upward)
  • sensible heat flux (positive upward)
  • wind speed at 10m
  • sea surface temperature
  • air temperature at 2m
  • air specific humidity at 2m
  • error field estimates for all the six variables

(2)  ISCCP radiation products interpolated onto OAFlux 1° grids:

  • net surface shortwave radiation (positive downward)
  • net surface longwave radiation (positive upward)


  • The ISCCP datasets (7/1/1983-12/31/2009) are kindly provided by Dr. William B. Rossow for distribution along with the OAFlux products.
  • The ISCCP datasets available here are on the OAFlux daily and 1-degree grid. The ISCCP original data products are gridded on 3-hourly, 2.5-degree resolution.
  • Work is underway on developing surface shortwave and longwave radiation analysis that balances the OAFlux surface turbulent heat fluxes.

(3) Net heat flux (1-degree gridded daily- and monthly-mean (1985-2009)):

  • net heat flux (positive downward, combined OAFlux and ISCCP)



  • Yu, L., & Weller, R. A. (2007). Objectively Analyzed Air–Sea Heat Fluxes for the Global Ice-Free Oceans (1981–2005), Bull. Ameri.. Meteorol. Soc., 88(4), 527-540.
  • Yu, L. (2007). Global Variations in Oceanic Evaporation (1958–2005): The Role of the Changing Wind Speed, J. Climate, 20(21), 5376-5390.
  • Yu, L. Jin, X., and Weller, R. A. (2008). Multidecade Global Flux Datasets from the Objectively Analyzed Air-sea Fluxes (OAFlux) Project: Latent and Sensible Heat Fluxes, Ocean Evaporation, and Related Surface Meteorological Variables. Woods Hole Oceanographic Institution, OAFlux Project Technical Report. OA-2008-01, 64pp. Woods Hole. Massachusetts. [PDF]