Relaxing the Tropics to an 'observed' state: Analysis using a simple baroclinic model

Quarterly Journal of the Royal Meteorological Society

Volumn 138, Issue 667, 2012, Pages 1618-1626

  Hoskins, Brian ^a   Fonseca, Ricardo ^b   Blackburn, Mike ^b   Jung, Thomas ^c  

^a IMPERIAL COLLEGE LONDON   (United Kingdom)

^b UNIVERSITY OF READING   (United Kingdom)

^c UNIVERSITY OF BREMEN   (Germany)

Author keywords

Critical time scales; Large scale tropical dynamics; Tropical relaxation

Indexed keywords

BAROCLINIC MODELS; BASIC EQUATIONS; CONTROL MODEL; DEPENDENT VARIABLES; DIABATIC HEATING; DYNAMICAL MODEL; FORECAST MODEL; ROSSBY WAVE; ROSSBY WAVE PROPAGATION; SCALE ANALYSIS; TIME-SCALES; TROPICAL ATMOSPHERES; TROPICAL DYNAMICS; TROPICAL FORCING; TROPICAL RELAXATION; VERTICAL MOTIONS; ZONAL FLOWS;

OCEAN CURRENTS; VORTICITY;

TROPICS;

DIABATIC PROCESS; DYNAMIC ANALYSIS; NUMERICAL MODEL; ROSSBY WAVE; TIMESCALE; WAVE PROPAGATION; WEATHER FORECASTING; ZONAL FLOW;

EID: 84866153646     PISSN: 00359009     EISSN: 1477870X     Source Type: Journal    
DOI: 10.1002/qj.1881     Document Type: Article

References (17)

1. Blackburn M, Methven J, Roberts N. 2008. Large-scale context for the UK floods in Summer 2007. Weather 63: 280-288.
2. Charney JG. 1955. The use of the primitive equations of motion in numerical preditciton. Tellus 7: 22-26.
3. Ferranti L, Palmer TN, Molteni F, Klinker E. 1990. Tropical-extratropical interaction associated with the 30-60 day oscillation and its impact on medium and extended range prediction. J. Atmos. Sci. 47: 2117-2199.
4. Frierson DMW. 2007. The dynamics of idealized convection schemes and their effect on the zonally averaged tropical circulation. J. Atmos. Sci. 64: 1959-1976.
5. Hoskins BJ. 1987. Diagnosis of forced and free variability in the atmosphere. Proceedings, RMS/AMS Conference on Atmospheric Variability on Seasonal and Longer Time Scales, London, September 1986.
6. Hoskins BJ, Karoly DJ. 1981. The steady linear response of a spherical atmosphere to thermal and orographic forcing. J. Atmos. Sci. 38: 1179-1196.
7. Hoskins BJ, Simmons A. 1975. A multi-layer spectral model and the semi-implicit method. Q. J. R. Meteorol. Soc. 101: 637-655.
8. Jin F-F, Hoskins BJ. 1995. The direct response to tropical heating in a baroclinic atmosphere. J. Atmos. Sci. 52: 307-319.
9. Jung T. 2011. Diagnosing remote origins of forecast error: relaxation versus 4D-Var data-assimilation experiments. Q. J. R. Meteorol. Soc. 137: 598-606.
10. Jung T, Palmer T, Rodwell M, Serrar S. 2008. Diagnosing forecast error using relaxation experiments. ECMWF Newsletter 116. ECMWF: Shinfield Park, Reading, Berkshire, UK. Available at http://www.ecmwf.int/publications/.
11. Jung T, Miller M, Palmer T. 2010a. Diagnosing the origin of extended-range forecast errors. Mon. Weath. Rev. 138: 2434-2446.
12. Jung T, Miller M, Palmer T. 2010b. Understanding the anomalously cold European winter of 2005/2006 using relaxation experiments. Mon. Weath. Rev. 138: 3157-3174.
13. Klinker E. 1990. Investigation of systematic errors by relaxation experiments. Q. J. R. Meteorol. Soc. 116: 573-594.
14. Pohl B, Douville H 2011. Diagnosing GCM errors over West Africa using relaxation experiments. Part I: summer monsoon climatology and interannual variability. Clim. Dyn. 37: 1293-1312, DOI: 10.1007/s00382-010-0911-2.
15. Rodwell MJ, Hoskins BJ. 1995. A model of the Asian Summer Monsoon Part II: Cross-equatorial flow and PV behavior. J. Atmos. Sci. 52: 1341-1356.
16. Sardeshmukh PD, Hoskins BJ. 1988. Generation of global rotational flow by steady idealized tropical divergence. J. Atmos. Sci. 45: 1228-1251.
17. Vitart F, Jung T. 2010. Impact of the Northern Hemisphere extratropics on the skill in predicting the Madden Julian Oscillation. Geophys. Res. Lett. 37: L23805.