1. Adler, R. F., Huffman, G. J., Chang, A., Ferraro, R., Xie, P., Janowiak, J., Rudolf, B., Schneider, U., Curtis, S., Bolvin, D., Gruber, A., Susskind, J., Arkin, P., and Nelkin, E.: The Version-2 Global Precipitation Climatology Project ({GPCP}) Monthly Precipitation Analysis (1979–present), J.\\ Hydrometeor., 4, 1147–1167, 2003.
2. Andersson, A., Bakan, S., Fennig, K., Graß{}l, H., Klepp, C., and Schulz, J.: Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data – HOAPS-3 – monthly mean, World Data Center for Climate, https://doi.org/10.1594/WDCC/HOAPS3_MONTHLY, electronic publication, 2007{a}.
3. Andersson, A., Bakan, S., Fennig, K., Graß{}l, H., Klepp, C., and Schulz, J.: Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data - HOAPS-3 – twice daily composite, World Data Center for Climate, https://doi.org/10.1594/WDCC/HOAPS3_DAILY, electronic publication, 2007{b}.
4. Andersson, A., Bakan, S., Fennig, K., Graß{}l, H., Klepp, C., and Schulz, J.: Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data – HOAPS-3 – 5-days mean, World Data Center for Climate, https://doi.org/10.1594/WDCC/HOAPS3_PENTAD, electronic publication, 2007{c}.
5. Andersson, A., Bakan, S., and Graß{}l, H.: Satellite derived precipitation and freshwater flux variability and its dependence on the North Atlantic Oscillation, Tellus, 62A, in print, https://doi.org/10.1111/j.1600-0870.2010.00458.x, 2010{a}.