Re-analysis of SKYNET data for assessment of climate effects of aerosol and cloud

2014 Fiscal Year Final Research Report

• Project/Area Number: 24510007
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Chiba University
• Principal Investigator: TAKAMURA Tamio 千葉大学, 環境リモートセンシング研究センター, 名誉教授 (40272356)
• Co-Investigator(Renkei-kenkyūsha): KHATRI Pradeep 千葉大学, 環境リモートセンシング研究センター, 特任助教 (80377986)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: エアロゾル / SKYNET / 光学的厚さ / 単一散乱アルベド / エアロゾル放射効果 / SKYRAD.pack

Outline of Final Research Achievements

The objective of this research is to improve the accuracy of Aerosol Optical Thickness(AOT) and Single Scattering Albedo(SSA) estimated in the SKYNET (http://atmos.cr.chiba-u.ac.jp/). The SSA has had a trend of a little overestimation compared with other data. In this research, both viewpoints of hardware and software in the SKYNET observation/analysis system are re-examined in detail. The newly developed spectro-pyranometer has been introduced for comparison of AOT and SSA with SKYNET products, and the calibration system has been also examined using an integrating sphere which is operated in AERONET/NASA. As a result, the most plausible reason of the overestimation of SSA in the SKYNET might be due to the small underestimation of the solid-view-angle of sensor of sky radiometer. Based on this result, a new calibration and revised method is proposed.

Free Research Field

大気放射学