Forecast and Observation-Impact Experiments in the Navy Global Environmental Model with Assimilation of ECWMF Analysis Data in the Global Domain

Journal of the Meteorological Society of Japan

Brett T. HOOVER¹  Rolf H. LANGLAND² 

[1] Cooperative Institute for Meteorological Satellite Studies (CIMSS), University of Wisconsin – Madison, WI, USA;Naval Research Laboratory, CA, USA

关键词: data assimilation;    observation impact;    adjoint model;    numerical weather prediction;   

DOI  :  10.2151/jmsj.2017-023

学科分类：大气科学

来源: Meteorological Society of Japan

【 摘 要 】

 This study examines analysis and forecast impacts in the Navy Global Environmental Model (NAVGEM) from direct assimilation of temperature and wind “pseudo-raob” profiles derived from analysis fields of the European Centre for Medium-Range Weather Forecasting-Integrated Forecast System (ECWMF-IFS). The pseudo-raob profiles are provided on eight vertical levels from 250 hPa to 1000 hPa on a 1° × 1° resolution rectilinear grid and are assimilated as synthetic observation data by NAVGEM at 0000 UTC and 1200 UTC for an experimental time period of 48 days. The pseudo-raob observations are assumed in these experiments to have observation errors identical to temperature and wind data provided by conventional radiosonde observations.

【 授权许可】

Unknown