Diurnal Variation of Radar Echo Area in the Middle of Indochina

• SATOMURA Takehiko

  Graduate School of Science, Kyoto University

• YAMAMOTO Keiko

  Graduate School of Science, Kyoto University

• SYSOUPHANTHAVONG Bounteum

  Department of Meteorology and Hydrology

• PHONEVILAY Souvanny

  Department of Meteorology and Hydrology

Bibliographic Information

Other Title

• Notes and correspondence: Diurnal variation of radar echo area in the middle of Indochina

Abstract

First results of diurnal variation of radar echo area observed at Vientiane, Lao PDR, in the middle of Indo-china are reported. Radar echo intensity data from April to October 2008 is analyzed.<br>The monthly averaged diurnal cycles of radar echo area have a peak in the late afternoon in April and midnight in July. The echo area per one echo at the time of the maximum total echo area in the diurnal cycle in April (∼600 km²) is smaller than that in July (∼1,200 km²). The phases of diurnal cycle of echo area in 6 banded regions oriented from southwest to northeast are compared to examine spatial differences of diurnal cycles. It is found that the phase of each band delays from southwestern to northeastern banded regions. The propagation speed of phase of echo area diurnal cycle is estimated as about 14 m s^-1.

Journal

• Journal of the Meteorological Society of Japan. Ser. II

  Journal of the Meteorological Society of Japan. Ser. II 89A 299-305, 2011

  Meteorological Society of Japan

Keywords

• Atmospheric Science

Details

• CRID: 1390282681482043136
• NII Article ID: 130004788758
• NII Book ID: AA00702524
• DOI: 10.2151/jmsj.2011-a20
• ISSN: 21869057
• ISSN: 00261165
• NDL BIB ID: 11029057
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11029057
• Web Site: http://www.jstage.jst.go.jp/article/jmsj/89A/0/89A_0_299/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed