Daytime Thermodynamic and Airflow Structures over Northeast Bangladesh during the Pre-Monsoon Season: A Case Study on 25 April 2010

Access this Article

Search this Article

Author(s)

Abstract

Simultaneous intensive radiosonde observation at three stations over northeast (Sylhet), central (Dhaka), and northwest (Bogra) Bangladesh was analyzed to describe a three-dimensional thermodynamic and airflow struc-tures on 25 April 2010, in which a distinct nocturnal rainfall occurred at Sylhet. As the observation was con-ducted in the daytime, the observed structures represent convectively inactive condition in a diurnal cycle. Local circulation was unclear and larger-scale airflow was dominated over Sylhet. The radiosonde observation indicated strong subsidence within 1-5 km over Dhaka and Bogra and within 4-5 km over Sylhet, whereas topographic uplifting of southwesterly airflow was observed within 1-3 km over Sylhet. Temperature profiles of Sylhet up to 3 km were lower than that of other stations, and easterly wind was observed at the surface.

Journal

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

    Journal of the Meteorological Society of Japan. Ser. II (89A), 167-179, 2011

    Meteorological Society of Japan

Codes

  • NII Article ID (NAID)
    130004788748
  • NII NACSIS-CAT ID (NCID)
    AA00702524
  • Text Lang
    ENG
  • Article Type
    特集
  • ISSN
    0026-1165
  • NDL Article ID
    11028834
  • NDL Source Classification
    ZM43(科学技術--地球科学--気象)
  • NDL Call No.
    Z54-J645
  • Data Source
    NDL  J-STAGE 
Page Top