Validation of MODIS and AHI Observed Water Cloud Properties Using Surface Radiation Data

• KHATRI Pradeep

  Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, Japan

• HAYASAKA Tadahiro

  Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, Japan

• IWABUCHI Hironobu

  Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, Japan

• TAKAMURA Tamio

  Center for Environmental Remote Sensing, Chiba University, Chiba, Japan

• IRIE Hitoshi

  Center for Environmental Remote Sensing, Chiba University, Chiba, Japan

• NAKAJIMA Takashi Y.

  Research and Information Center, Tokai University, Tokyo, Japan

抄録

 The present study implements long-term surface observed radiation data (pyranometer observed global flux and sky radiometer observed spectral zenith transmittance data) of multiple SKYNET sites to validate water cloud optical properties (cloud optical depth COD and effective radius Re) observed from space by MODIS onboard TERRA and AQUA satellites and AHI onboard Himawari-8 satellite. Despite some degrees of differences in COD and Re between MODIS and AHI, they both showed common features when validated using surface based global flux data as well as cloud properties retrieved from sky radiometer observed zenith transmittance data. In general, CODs from both satellite sensors are found to overestimated when clouds are optically thin. Among a number of factors (spatial and temporal variations of cloud, sensor and solar zenith angles), the solar zenith angle (SZA) is found to have an impact on COD difference between reflectance based satellite sensor and transmittance based sky radiometer. The Re values from the sky radiometer and satellite sensor are generally poorly correlated. The difference in Re between the sky radiometer and satellite sensor is negatively correlated with COD difference between them, which is likely due to the inherent influence of Re retrieval precision on COD retrieval and vice versa in transmittance based sky radiometer.

収録刊行物

• 気象集誌. 第2輯

  気象集誌. 第2輯 96B (0), 151-172, 2018

  公益社団法人 日本気象学会

キーワード

• cloud
• AHI
• MODIS
• SKYNET

詳細情報

• CRID: 1390001288072259968
• NII論文ID: 130007485220
• NII書誌ID: AA00702524
• DOI: 10.2151/jmsj.2018-036
• ISSN: 21869057
• ISSN: 00261165
• NDL書誌ID: 029353456
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029353456
• Web Site: https://www.jstage.jst.go.jp/article/jmsj/96B/0/96B_2018-036/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可