HOAPS: Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data
The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data (HOAPS) set is a satellite-based climatology of precipitation, evaporation and freshwater budget (evaporation minus precipitation) as well as related turbulent heat fluxes and atmospheric state variables over the global ice free oceans. All variables are derived from SSM/I passive microwave radiometers, except for the SST, which is taken from AVHRR measurements. The data set includes multi-satellite averages, inter-sensor calibration, and an efficient sea ice detection procedure. All HOAPS products have global coverage, i.e., within ±180° longitude and ±80° latitude and are only defined over the ice-free ocean surface. The products are available as monthly averages and 6-hourly composites on a regular latitude/longitude grid with a spatial resolution of 0.5° x 0.5° degrees.
Fennig, Karsten; Andersson, Axel; Bakan, Stephan; Klepp, Christian-Phillip; Schröder, Marc (2012): Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS 3.2 - Monthly Means / 6-Hourly Composites. Satellite Application Facility on Climate Monitoring. DOI:10.5676/EUM_SAF_CM/HOAPS/V001. http://dx.doi.org/10.5676/EUM_SAF_CM/HOAPS/V001
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Acknowledgement of any material taken from or knowledge gained from this page is appreciated:
National Center for Atmospheric Research Staff (Eds). Last modified "The Climate Data Guide: HOAPS: Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data.” Retrieved from https://climatedataguide.ucar.edu/climate-data/hoaps-hamburg-ocean-atmosphere-parameters-and-fluxes-satellite-data on 2025-07-18.
Citation of datasets is separate and should be done according to the data providers' instructions. If known to us, data citation instructions are given in the Data Access section, above.
Acknowledgement of the Climate Data Guide project is also appreciated:
Schneider, D. P., C. Deser, J. Fasullo, and K. E. Trenberth, 2013: Climate Data Guide Spurs Discovery and Understanding. Eos Trans. AGU, 94, 121–122, https://doi.org/10.1002/2013eo130001
Key Figures
HOAPS-3: Annual mean freshwater flux (E-P) for 2005. (Climate Data Guide; D. Shea)
Other Information
SSM/I passive microwave radiometers, except for the SST, which is taken from AVHRR
0.5 x 0.5
- A. Andersson et al (2010): The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data – HOAPS-3. Earth Syst. Sci. Data Discuss., 3, 143-194
- A. Andersson et al (2007): Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS-3 - monthly mean.
- A. Andersson et al (2007): Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS-3 - 5-days mean
- A. Andersson et al (2007): Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS-3 - twice daily composite
- A. Andersson et al (2011): Evaluation of HOAPS-3 ocean surface freshwater flux components, Journal of Applied Meteorology and Climatology, 50, 379-398
- Andersson, A., S. Bakan, H. Graßl (2010): Satellite derived North Atlantic precipitation variability and its dependence on the NAO index, Tellus A, 62(4), 453-468