1. Do ISCCP & SRB Radiation Products Show Effects of Anomalies in Ancillary Data ? Ehrhard Raschke (Hamburg) Stefan Kinne (Hamburg) Ely Duenas (GISS, NY) Yuan-C. Zhang (GISS, NY) William B. Rossow (GISS, NY)

2. ISCCP and GEWEX-SRB compute all (!!) radiation budget components at the TOA, at the Surface and within the Atmosphere from ancillary data, which are partly derived from satellite measurements.

3. Hypothesis: The quality of all radiation products as computed from satellite measurements and other (i.e. ancillary) climate data depends on the quality of all such ancillary data. We, the authors, do not believe in any trends, if the quality of ALL involved data has not been proven.

4. ISCCP: Surface temperature and reflectance; water vapor & air temperature

5. ISCCP: Clouds: top pressure & temperature, optical thickness & amount

6. ISCCP: Cloud amounts: Total, low, middle & high

7. Solar flux and cloud effect at surface (left) and within the atmosphere (right)

8. SRB – Global monthly averages of clear sky incoming solar radiation at surface, computed in 2007: deseasonalised by Ehrhard Raschke – June 2007 May be somebody else computes this quantity from SRB data and tries to interpret the results: Data from LaRC group ?

9. No solar „brightening” in ISCCP data?

10. Annual anomalies of downward clear sky solar radiation at the surface with respect to the average of the period 1984 to 1995. WHERE do „trends“ occur?

11. Anomalies of the surface albedo (ratios up-to-down)

12. Differences (1984 to 1995) of downward solar (left) and longwave (right) radiation at surface for cloudy (top) and clear skies (middle row) and of the cloud effect (bottom) cloudy clear cloud effects

13. Longwave radiation at surface

14. Longwave up & CE at TOA and net & CE within atmosphere

15. Annual anomalies of emission of longwave radiation from the surface with respect to the period 1984 to 1995. WHERE do „trends“ occur?

16. Downward longwave radiation at surface

17. Net radiation at TOA Net radiation at surface

18. Conclusion and Recommendation There is very strong evidence that natural and “artificial” anomalies in ancillary data cause anomalies in cloud and radiation products, which may cause (and had already caused in the past) false interpretations with respect to climate variations. We therefore recommend that all such ancillary data must be quality-inspected with respect to natural and “artificial” anomalies before their use in computations of cloud and radiation products. (These statements need to be considered also in other GEWEX data assessments!

20. IPCC 2007 Steady

21. ALBEDO & CE at TOA and ALBEDO at surface

22. Annual anomalies of solar radiation at surface for cloudy skies with respect to the average of the period 1984 to 1995.

23. Annual anomalies of the upwelling longwave flux at surface, with respect to the average for the period 1984 to 1995.

24. Annual anomalies of the cloud effect on downward solar radiation at surface, with respect to the average for the period 1984 to 1995.

28. Differences at the surface (s) and TOA (t) of downward solar (sd) and longwave (ld) and of upward solar (su) and longwave (lu) radiation for cloudy and clear skies. cloudy clear cloudy clear

29. Cloud effect on total net radiation at surface and within the atmosphere