• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

ANNUAL VARIATIONS OF CLOUD LIQUID WATER IN THE POLAR REGION USING SATELLITE DATA

Research Project

Project/Area Number 06640564
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionNATIONAL INSTITUTE OF POLAR RESEARCH

Principal Investigator

WADA Makoto  NATIONAL INSTITUTE OF POLAR RESEARCH,DIVISION OF RESEARCH ASSOCIATE PROFESSOR, 研究系, 助教授 (40132716)

Co-Investigator(Kenkyū-buntansha) KONISHI Hiroyuki  OSAKA KYOIKU UNIVERSITY FACULTY OF EDUCATION ASSOCIATE PROFESSOR, 教育学部, 助教授 (70178292)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsColumn liquid water / Polar region / SSM / I / Microwave radiometer / Precipitating clouds / マイクロ波放射計 / 雲と降水 / DMSP / 衛星データ
Research Abstract

Seasonal and annual variations of column liquid water and precipitable water have been investigated using the SSM/I data of DMSP satellite. Meteorological radar and microwave radiometer observations were carried out at Syowa Station in 1988 and 1989. The Antarctic satellite data of 1988-1990 have been analyzed mainly, although the data of 1987-1995 have been dealt with. The Arctic data of 1992-1995 have been analyzed. The variation of 22 GHz and 37 GHz brightness temperature are roughly same as the variation of precipitable water and column liquid water in the atmosphere, respectively over open sea area. Some results of the brightness temperatures are described on behalf of those of column liquid water and precipitable water.
High brightness temperature areas of 22 and 37 GHz were admitted near the off coast of Syowa Station according to the SSM/I image, when precipitation associated with low pressure was observed at Syowa Station. It was found that column liquid water was high in the e … More ast of the cloud band but was low in the west of cloud band. This result was similar to the characteristic of band cloud structure observed by meteorological radar at Syowa Station. The variation of precipitable water showed a peak aroung February, but the variation of column liquid water had two peaks in a year which were around February to April and around October to December. Total precipitation of 1989 was twice larger than that of 1988. Comparing the SSM/I images of 1988 and 1989 along the coast, the frequency of the days of high column liquid water was bigger in 1989 than in 1988. Especially, the big difference of both years was found around March to May and around October to November.
It was found in the Arctic data that there were 2 periods with different values of precipitable water in a year. One was the period from May to October and others were from January to April and from November to December. The variation of 1993 data showed some difference from the data of other years. It might be related to the area of sea ice extension in three years in the Arctic. Maximum colum liquid water was 0.2 kg/m2 derived from SSM/I in the Arctic in 1992-1995, except 1993. Less

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Wada,M.: "Observations of Column cloud liquid water in the atmosphere,some aerosols and gases near surface and snowfalls at the ground in Svalbard,Arctic." Nucleation and atmospheric aerosol 1996. 812-815 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Wada,M.: "A study of precipitating clouds in the vicinity of three fronts and cyclone obtained from observations of microwave radiometer and vertically pointing radar in Svalbard" Proc.12th International Conf.on Clouds and Precipitation. Vol.1. 694-697 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Konishi,H.: "Studies on the characteristics of precipitation phenomena obtained by radar observations at Syowa Station" Proc.12th International Conf.on Clouds and Precipitation. 664-667 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Konishi,H.: "Seasonal variation of precipitating clouds near Syowa Station,Antarctica,derived from liquid water content data" J.Meteoral.Soc.Japan. 72. 709-719 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Wada, M.and M.Igarashi: "Observations of Column cloud liquid water in the atmosphere, some aerosols and gases near surface and snowfalls at the ground in Svalbard, Arctic." In Nucleation and atmospheric aerosols 1996. ed. by M.Kulumala and P.E.Wagner, Pergamon, U.K.812-815 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Wada, M.and H.Konishi: "A study of precipitating clouds in the vicinity of three fronts and cyclone obtained from observations of microwave radiometer and vertically pointing radar in Svalbard, Arctic." Proc. 12th International Conference on Clouds and Precipitation. Vol.1. 694-697 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Konishi, H., M.wada and T.Endoh: "Studies on the characteristics of precipitation phenomena obtained by radar observations at Syowa Station, Antarctica." Proc. 12th International Conference on Clouds and Precipitation. Vol.1. 694-697 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Konishi, H., M.wada and T.Endoh: "Seasonal variation of precipitating clouds near Syowa Station, Antarctica, derived from liquid water content data." J.Meteorol. Soc. Jpn. 72. 709-717 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Wada,M.: "Observations of Column cloud liquid water in the atmosphere,some aerosols and gases near surface and snowfalls at the ground in Svalbard,Arctic." Nucleation and atmospheric aerosols 1996. 812-815 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Wada,M.: "A study of precipitating clouds in the vicinity of three fronts and cyclone obtained from observations of microwave radiometer and vertically pointing radar in Svalbard,Arctic." Proceedings of the 12th International Conference on Clouds and Precipitation. Vol.1. 694-697 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Konishi,H.: "Studies on the characteristics of precipitation phenomena obtained by radar observations at Syowa Station,Antarctica." Proceedings of the 12th International Conference on Clouds and Precipitation. Vol.1. 664-667 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Konishi,H.: "Seasonal variation of precipitating clouds near Syowa Station,Antarctica,derieved from liquid water content dat." J.of Meteorl.Soc.Japan. 72. 709-719 (1994)

    • Related Report
      1996 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi