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Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

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.

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Comparison of Surface and Satellite Observations of Clouds and Solar Radiation Over Europe

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  1. Comparison of Surface and Satellite Observations of Clouds and Solar RadiationOver Europe Joel Norris GEWEX Cloud Assessment Meeting 6 July 2006

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

  3. 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 )

  4. SW Flux Estimated from Synoptic Reports correlation = 0.87

  5. SW Flux Estimated from Synoptic Reports correlation = 0.87 ×1.8 to account for the positive correlation between cloud cover and cloud thickness anomalies

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