A weak-constraint four-dimensional variational analysis system in the stratosphere

被引：11
|
作者：
Lindskog, Magnus [1 ]
Dee, Dick [1 ]
Tremolet, Yannick [1 ]
Andersson, Erik [1 ]
Radnoti, Gabor [1 ]
Fisher, Mike [1 ]
机构：
[1] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England
来源：
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2009年 / 135卷 / 640期
关键词：
variational data assimilation; weak-constraint; 4D-Var; stratospheric model error; ECMWF OPERATIONAL IMPLEMENTATION; DATA ASSIMILATION; 4D-VAR; MODEL; BIAS;
D O I：
10.1002/qj.392
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
A weak-constraint four-dimensional variational (4D-Var) analysis system designed to correct stratospheric model errors has been evaluated. Verifications against upper-level radiosonde temperature observations and Stratospheric Sounding Unit (SSU) radiance data show that the addition of a weak constraint in the stratosphere call greatly reduce analysis bias. Both single-observation analysis experiments and extended assimilations have been performed to help us understand the impact of the model error covariance specifications required for the weak-constraint formulation. It is found that the use of multivariate balance constraints similar to those implemented in background-error covariances can be problematic. Copyright (C) 2009 Royal Meteorological Society
引用
收藏
页码：695 / 706
页数：12
相关论文
共 50 条
  • [1] An Ensemble Approach to Weak-Constraint Four-Dimensional Variational Data Assimilation
    Shaw, Jeremy A.
    Daescu, Dacian N.
    INTERNATIONAL CONFERENCE ON COMPUTATIONAL SCIENCE 2016 (ICCS 2016), 2016, 80 : 496 - 506
  • [2] Sensitivity of the model error parameter specification in weak-constraint four-dimensional variational data assimilation
    Shaw, Jeremy A.
    Daescu, Dacian N.
    JOURNAL OF COMPUTATIONAL PHYSICS, 2017, 343 : 115 - 129
  • [3] Unsteady flow enhancement on an airfoil using sliding window weak-constraint four-dimensional variational data assimilation
    Li, Sen
    He, Chuangxin
    Liu, Yingzheng
    PHYSICS OF FLUIDS, 2023, 35 (06)
  • [4] Spectral estimates for saddle point matrices arising in weak constraint four-dimensional variational data assimilation
    Dauzickaite, Ieva
    Lawless, Amos S.
    Scott, Jennifer A.
    van Leeuwen, Peter Jan
    NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS, 2020, 27 (05)
  • [5] Four-dimensional variational data assimilation system for the Earth ionosphere
    Ostanin, Pavel A.
    Kulyamin, Dmitry V.
    Kostrykin, Sergey V.
    Vasilev, Alexei E.
    Dymnikov, Valentin P.
    RUSSIAN JOURNAL OF NUMERICAL ANALYSIS AND MATHEMATICAL MODELLING, 2025, 40 (01) : 33 - 46
  • [6] Parallelization in the time dimension of four-dimensional variational data assimilation
    Fisher, Michael
    Guerol, Selime
    QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2017, 143 (703) : 1136 - 1147
  • [7] Development of an Efficient Regional Four-Dimensional Variational Data Assimilation System for WRF
    Zhang, Xin
    Huang, Xiang-Yu
    Liu, Jianyu
    Poterjoy, Jonathan
    Weng, Yonghui
    Zhang, Fuqing
    Wang, Hongli
    JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY, 2014, 31 (12) : 2777 - 2794
  • [8] Analysis of four-dimensional variational state estimation of the Hawaiian waters
    Matthews, D.
    Powell, B. S.
    Janekovic, I.
    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2012, 117
  • [9] Dual formulation of four-dimensional variational assimilation
    Courtier, P
    QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1997, 123 (544) : 2449 - 2461
  • [10] A time-parallel approach to strong-constraint four-dimensional variational data assimilation
    Rao, Vishwas
    Sandu, Adrian
    JOURNAL OF COMPUTATIONAL PHYSICS, 2016, 313 : 583 - 593
12345