Journal cover Journal topic
Earth System Science Data The Data Publishing Journal
Earth Syst. Sci. Data, 2, 215-234, 2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
30 Sep 2010
The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data – HOAPS-3
A. Andersson1, K. Fennig2, C. Klepp3, S. Bakan1, H. Graßl3, and J. Schulz4 1Max-Planck Institut für Meteorologie, Hamburg, Germany
2Deutscher Wetterdienst, Satellite Application Facility on Climate Monitoring, Offenbach, Germany
3Meteorologisches Institut der Universität Hamburg, Germany
4EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), Darmstadt Germany
Abstract. The availability of microwave instruments on satellite platforms allows the retrieval of essential water cycle components at high quality for improved understanding and evaluation of water processes in climate modelling. HOAPS-3, the latest version of the satellite climatology "Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data" provides fields of turbulent heat fluxes, evaporation, precipitation, freshwater flux and related atmospheric variables over the global ice-free ocean. This paper describes the content, methodology and retrievals of the HOAPS climatology. A sophisticated processing chain, including all available Special Sensor Microwave Imager (SSM/I) instruments aboard the satellites of the Defense Meteorological Satellites Program (DMSP) and careful inter-sensor calibration, ensures a homogeneous time-series with dense data sampling and hence detailed information of the underlying weather situations. The completely reprocessed data set with a continuous time series from 1987 to 2005 contains neural network based algorithms for precipitation and wind speed and Advanced Very High Resolution Radiometer (AVHRR) based SST fields. Additionally, a new 85 GHz synthesis procedure for the defective SSM/I channels on DMSP F08 from 1988 on has been implemented. Freely available monthly and pentad means, twice daily composites and scan-based data make HOAPS-3 a versatile data set for studying ocean-atmosphere interaction on different temporal and spatial scales. HOAPS-3 data products are available via

Citation: Andersson, A., Fennig, K., Klepp, C., Bakan, S., Graßl, H., and Schulz, J.: The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data – HOAPS-3, Earth Syst. Sci. Data, 2, 215-234,, 2010.