comparison of surface and satellite observations of clouds and solar radiation over europe

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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

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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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Page 1: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

Comparison of Surface and Satellite Observations of

Clouds and Solar RadiationOver Europe

Joel Norris

GEWEX Cloud Assessment Meeting

6 July 2006

Page 2: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

× = GEBA station● = cloud station− = ISCCP grid box

Page 3: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

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 )

Page 4: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

SW Flux Estimated from Synoptic Reports

correlation = 0.87

Page 5: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

SW Flux Estimated from Synoptic Reports

correlation = 0.87

×1.8 to account for the positive correlation between cloud cover and cloud thickness anomalies

Page 6: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

Page 7: Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

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