Improvement of a sea surface wind retrieval and development of an offshoere wind assessment system with satellite images

• Project/Area Number: 15K21664
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Naval and maritime engineering; Earth system and resources engineering
• Research Institution: Tokyo University of Marine Science and Technology (2017); National Institute of Advanced Industrial Science and Technology (2015-2016)
• Principal Investigator: Takeyama Yuko 東京海洋大学, 学術研究院, 助教 (00510025)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 合成開口レーダ / 海上風 / Sentinel-1 / PALSAR / 洋上風力発電 / 海上風推定 / ALOS PALSAR / SENTINEL-1

Outline of Final Research Achievements

An archiving system of ALOS/PALSAR images has been developed with an image searching function. Sea surface wind speeds are validated with in situ winds measured in Shirahama and Hiratsuka observation platforms using the archiving system. It is clarified that noises called ambiguities can appear on coastal waters near artificial structures, and lead overeatimated winds. Moreover, it is found that Sentinel-1/SAR can retrieve wind speeds with higher accuracies than ALOS/PALSAR.

Research Products

• [Presentation] Sea surface wind speed observations with SENTINEL-1 in coastal waters (2016)
  • Author(s): Yuko Takeyama, Teruo Ohsawa, Susumu Shimada, Katsutoshi Kozai, Tetsuya Kogaki
  • Organizer: Europian Meteorological Society
  • Place of Presentation: Trieste, Italy
  • Year and Date: 2016-09-11
  • Int'l Joint Research