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Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe. Joel Norris GEWEX Cloud Assessment Meeting 6 July 2006. × = GEBA station ● = cloud station −= ISCCP grid box. SW Flux Estimated from Synoptic Reports. - PowerPoint PPT Presentation
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Comparison of Surface and Satellite Observations of
Clouds and Solar RadiationOver Europe
Joel Norris
GEWEX Cloud Assessment Meeting
6 July 2006
× = GEBA station● = cloud station− = ISCCP grid box
SW Flux Estimated from Synoptic Reports
• Estimate radiation anomalies due to cloud cover anomalies to bridge between synoptic cloud reports and GEBA and ISCCP FD solar radiation data
SW Cloud Cover Radiative Forcing (CCRF) anomaly =(mean SW CRF / mean cloud cover) total cloud cover anomaly )
SW Flux Estimated from Synoptic Reports
correlation = 0.87
SW Flux Estimated from Synoptic Reports
correlation = 0.87
×1.8 to account for the positive correlation between cloud cover and cloud thickness anomalies