Joint Centre for Mesoscale Meteorology (JCMM)

CURRENT JCMM INTERNAL REPORTS

CURRENT JCMM INTERNAL REPORTS

This series of JCMM Internal Reports, initiated in 1993, contains unpublished reports and also versions of articles submitted for publication. The complete set of Internal Reports is available from the National Meteorological Library on loan, if required.

1. Research strategy and programme.
K A Browning et al
January 1993

2. The GEWEX Cloud System Study (GCSS).
GEWEX cloud system science team
January 1993

3. Evolution of a mesoscale upper tropospheric vorticity maximum and comma cloud from a cloud-free two-dimensional potential vorticity anomaly
K A Browning
January 1993

4. The global energy and water cycle
K A Browning
July 1993

5. Structure of a midlatitude cyclone before occlusion
K A Browning and N Roberts
July 1993

6. Developments in systems and tools for weather forecasting
K A Browning and G Szejwach
July 1993

7. Diagnostic study of a narrow cold frontal rainband and severe winds associated with a stratospheric intrusion
K A Browning and R Reynolds
August 1993

8. Survey of perceived priority issues in the parametrizations of cloud related processes in GCMs
K A Browning
September 1993

9. The effect of rain on longwave radiation
I Dharssi
September 1993

10. Cloud microphysical processes - a description of the parametrization used in the large eddy model
H Swann
October 1993

11. An appreciation of the meteorological research of Ernst Kleinschmidt
A J Thorpe
May 1992

12. Potential vorticity of flow along the Alps
A J Thorpe, H Volkert and Dietrich Heimann
August 1992

13. The representation of fronts
A J Thorpe
January 1993

14. A parametrization scheme for symmetric instability: tests for an idealised flow
C S Chan and A J Thorpe
February 1993

15. The Fronts 92 Experiment: a Quicklook Atlas
Edited by T D Hewson
November 1993

16. Frontal wave stability during moist deformation frontogenesis Part 1: Linear wave dynamics
C H Bishop and A J Thorpe
May 1993

17. Frontal wave stability during moist deformation frontogenesis Part 2: The suppression of non-linear wave development
C H Bishop and A J Thorpe
May 1993

18. Gravity waves in sheared ducts
S Monserrat and A J Thorpe
October 1993

19. Potential vorticity and the electrostatics analogy: quasi-geostrophic theory
C Bishop and A J Thorpe
November 1993

20. Recent advances in the measurement of precipitation by radar
A J Illingworth
April 1993

21. Micro-physique et givrage. Cloud microphysics and aircraft icing
A J Illingworth
May 1993

22. Differential phase measurements of precipitation
M Blackman and A J Illingworth
May 1993

23. Estimation of effective radius of cloud particles from the radar reflectivity.
N I Fox and A J Illingworth
May 1993

24. A simple method of Dopplerising a pulsed magnetron radar
L Hua, A J Illingworth and J Eastment
November 1993

25. Radiation and polar lows
George C Craig
February 1994

26. Collected preprints submitted to the International Symposium on the Life Cycles of Extratropical Cyclones, Bergen, Norway, 27 June - 1 July 1994
April 1994

27. Convective frontogenesis
Douglas J Parker and Alan J Thorpe
April 1994

28. Improved measurement of the ice water content in cirrus using a total water evaporator
Philip R A Brown and Peter N Francis
April 1994

29. Mesoscale effects of a dry intrusion within a vigorous cyclone
K A Browning and B W Golding
April 1994

30. GEWEX cloud system study: Science Plan
May 1994

31. Parametrization of momentum transport by convectively generated gravity waves
R Kershaw
May 1994

32. Mesoscale Modelling Newsletter No.5
May 1994

33. Observations of the mesoscale sub-structure in the cold air of a developing frontal cyclone
K A Browning, S A Clough, C S A Davitt, N M Roberts and T D Hewson
May 1994

34. Longwave radiative forcing of a simulated tropical squall line
Imtiaz Dharssi
July 1994

35. On the nature of the convective circulations at a kata-cold front
K A Browning
September 1994

36. Collected preprints of papers submitted to the COST-75 International Seminar on Advanced Weather Radar Systems, Brussels, 20-23 September 1994
November 1994

37. Use of satellite imagery to diagnose events leading to frontal thunderstorms: parts I and II of a case study
K A Browning and N M Roberts
November 1994

38. The role of a spaceborne millimetre-wave radar in the global monitoring of ice cloud
P R A Brown, A J Illingworth, A J Heymsfield, G M McFarquhar, K A Browning and
M Gosset
December 1994

39. Potential vorticity inversion
Michal Ziemianski
October 1994

40. Theory of mature tropical cyclones; A compariosn between Kleinschmidt (1951) and Emanuel (1986)
Suzanne L Gray
December 1994

41. Dispersion and removal of pollutants during the passage of an atmospheric frontal system
N R Gimson
December 1994

42. The role of snow sublimation in frontogenesis
D J Parker and A J Thorpe
December 1994

43. Potential vorticity and the electrostatics analogy: Ertel-Rossby formulation
A J Thorpe and C H Bishop
December 1994

44. Mesoscale aspects of extratropical cyclones: an observational perspective
K A Browning
January 1995

45. A polar low outbreak: evolution and mesoscale structures
T D Hewson, G C Craig and C Claud
February 1995

46. Generation of near-surface gusts of deep convection
K Nakamura and R Kershaw
April 1995

47. Attribution concepts applied to the omega equation
S A Clough, C S A Davitt and A J Thorpe
June 1995

48. Parametrization of mixed-phase cloud and precipitation
Susan P Ballard and M Gerard Hutchinson
June 1995

49. Short-range forecasting of stratocumulus: initialization prediction
Abstract
Susan P Ballard, Simon D Jackson and B McPherson
June 1995

50. Contributions of the JCMM/Dept of Meteorology Radar Group to the 27th AMS Radar Meteorology Conference, Vail, Ocober 1995
Abstract
June 1995

51. Cold pools in shear
Abstract
Douglas J Parker
September 1995

52. High resolution analysis of frontal fracture
Abstract
K A Browning, S P Ballard and C S A Davitt
September 1995

53. The albedo of broken cloud fields: calculations using a modified two stream radiation code
Abstract
Imtiaz Dharssi and Roy Kershaw
October 1995

54. Parametrization of momentum transport by convection. I: theory and cloud modelling results
Abstract
R Kershaw and D Gregory
November 1995

55. Variation of frontal structure along a cold front
K A Browning and N M Roberts
November 1995

56. Secondary frontal waves
Abstract
Douglas Parker
December 1995

57. Objective fronts
Abstract
T D Hewson
March 1996

58. Mesoscale analysis of the activation of a cold front during cyclogenesis
Abstract
K A Browning, N M Roberts and A J Illingworth
June 1996

59. Investigation of different representations of rain in a 1-d evaporation model
Abstract
H Swann
May 1996

60. Parametrization of diabatic processes in the inversion of the omega-equation
M Athanassiadou and A J Thorpe
Abstract
June 1996

61. The role of the environmental flow in the development of secondary frontal cyclones
Abstract
I A Renfrew, A J Thorpe and A Joly
June 1996

62. Consequences of the geostrophic momentum approximation on barotropic instability
Abstract
S Malardel, A J Thorpe and A Joly
June 1996

63. Contributions to the AMS/RMS Conference on Mesoscale Processes
Abstract
Reading, 9-13 September 1996

64. Vorticity and potential vorticity in sratified flows interacting with an isolated obstacle
Abstract
Jorge A Gutierrez and A J Thorpe
September 1996

65. Triple point development: two case studies
Abstract
Douglas Parker
September 1996

66. Radar observations of wind-shear splitting within evolving atmospheric Kelvin-Helmholtz billows
Abstract
D Chapman and K A Browning
April 1997

67. Cold frontal structure derived from radar wind profilers
Abstract
K A Browning, D Jerrett, J Nash, T Oakley and N M Roberts
May 1997

68. The dry intrusion and its effects on the frontal, cloud and precipitation structure of extratropical cyclones
Abstract
K A Browning - Text of invited special lecture at the Spring Conference of the Meteorological Society of Japan, University of Tsukuba, 22 May 1997

69. Met. Office Unified Model data, diagnostic graphics programs and other observational data available from the JCMM through the aegis of the Universities Weather Research Network (UWERN)
(Plus supplement)
Peter Panagi and Ed Dicks
June 1997

70. Contributions of the JCMM/Dept of Meteorology Radar Group to the 28th AMS Radar Meteorology Conference, Austin, Texas, September 1997
Abstract
July 1997

71. Sensitivity of short-range weather forecasts to local potential vorticity modifications
Abstract
Meral Demirtas and Alan Thorpe
July 1997

72. Objective identification of frontal wave cyclones
Abstract
T D Hewson
August 1997

73. Attribution and its application to mesoscale structure associated with tropopause folds
Abstract
A J Thorpe
September 1997

74. The role of the environmental flow in the developmnent of secondary frontal cyclones
Abstract
Ian A Renfrew, Alan J Thorpe and Craig H Bishop
September 1997

75. Potential vorticity: a short history of its definitions and uses
Abstract
Alan J Thorpe and Hans Volkert
September 1997

76. Superposing semi-geostrophic potential vorticity anomalies
Abstract
H R Birkett and A J Thorpe
September 1997

77. Short period forecasting of catchment-scale precipitation. part I: the role of numerical weather prediction
Abstract
M A Pedder, M Haile and A J Thorpe
September 1997

78. Verification of the tracking technique used in an experimental cloud motion wind inferring system
Abstract
Z Wang, K A Browning and G A Kelly
October 1997

79. A preliminary study of Fourier series analysis for cloud tracking with GOES high temporal resolution images
Abstract
Z Wang
October 1997

80. Analysis of an ex-tropical cyclone after reintensifying as a warm-core extratropical cyclone
Abstract
K A Browning, G Vaughan and P Panagi
November 1997

81. A JCMM overview of FASTEX IOPs
Abstract
S A Clough, H W Lean, N M Roberts, H Birkett, J-P Chaboureau, R Dixon, M Griffiths, T D Hewson and A Montani
January 1998

82. Programs for PV inversion and modification
Abstract
Meral Demirtas
December 1997

83. Release of potential shearing instability in warm frontal zones
Abstract
D Chapman and K A Browning
February 1998

84. The European Cloud-Resolving Modelling Programme (EUCREM)
Summary report from the coordinator
Abstract
P W White
April 1998

85. A frontal wave database
Abstract
T D Hewson
April 1998

86. Layering observed in dropsoundings from IOP 1 of Fronts 92
Abstract
S A Clough
May 1998

87. Use of wind-shear displays for Doppler radar data
Abstract
D Chapman and K A Browning
May 1998

88. Radar estimates of rainfall rates at the ground in bright band and non-bright band events
Abstract
T J Smyth and A J Illingworth
June 1998

89. Correction for attenuation of radar reflectivity using polarisation data
Abstract
T J Smyth and A J Illingworth
June 1998

90. The effects of convection on chemical reactions and precipitation scavenging
Abstract
Neil R Gimson
July 1998

91. How to use the display program DISP
Abstract
N M Roberts
August 1998

92. Conceptual models of cyclogenesis
Abstract
Adrian T Semple
August 1998

93. Observations of oblate hail using dual polarisation radar and implications for hail detection schemes
Abstract
T J Smyth, T M Blackman and A J Illingworth
September 1998

94. The semigeostrophic diagnosis of vertical motion. Part I: Formulation and co-ordinate transformations
Abstract
Mike A Pedder and Alan J Thorpe
September 1998

95. The semigeostrophic diagnosis of vertical motion. Part II: Results for an idealised baroclinic wave life cycle
Abstract
Alan J Thorpe and Mike A Pedder
September 1998

96. Convective destabilisation by a tropopause fold diagnosed using potential velocity inversion
Abstract
Morwenna Griffiths, Alan Thorpe and Keith Browning
October 1998

97. Forecast skill of the ECMWF model using targeted observations during FASTEX
Abstract
A Montani, A J Thorpe, R Buizza and P Unden
October 1998

98. Observations and model simulations of the FASTEX IOP16 frontal wave - effects of sublimation
Abstract
Sid A Clough, Humphrey W Lean, Nigel M Roberts and Richard M Forbes

99. The application of conceptual models in NWP
Abs tract
Adrian T Semple
January 1999

100. Mesoscale analysis of arc rainbands in a dry slot
Abstract
K A Browning and N M Roberts
January 1999

101. Interaction of mesoscale tropopause depressions with a warm-core cyclone: observational and model analyses, and sensitivity to analysis errors
Abstract
K A Browning, A J Thorpe, A Montani, D Parsons, M Griffiths, P Panagi and E M Dicks
February 1999

102. Use of water vapour imagery and PV inversion to adjust initial conditions in NWP
Abstract
Sean J Swarbrick
February 1999

103. Summary notes for a lecture course on Waves in the atmosphere and ocean
Abstract
A A White
March 1999

104. Results of a questionnaire on the operational value of conceptual models (CMs) of fronts and cyclones
Abstract
N M Roberts & M V Young
July 1999

105. Contributions to the Poster Session at the 1998 UWERN Annual Science Meeting
Abstract
assembled by A A White
August 1999

106. The objective analysis of dropsonde data from FASTEX
Abstract
Richard Forbes, Sid Clough, Mark Dixon, Andy Macallan and Nigel Roberts
January 2000

107. Implications for mesoscale modelling from a study of the FASTEX 1OP 16 mid-latitude cyclone
Richard M Forbes, Humphrey W Lean, Nigel M Roberts and Peter A Clark
March 2000

108. The use of water vapour imagery and PV inversion to adjust initial conditions in NWP
Abstract
Sean J Swarbrick
September 1999

109. A guide to aspects of water vapour imagery interpretation: the significance of dry regions
Abstract
Nigel M Roberts
January 2000

110. The relationship between water vapour imagery and thunderstorms
Abstract
Nigel M Roberts
February 2000

111. Holomorphic structures in hydrodynamical models of nearly geostrophic flow
Abstract
V N Roubtsov and I Roulstone
January 2000

112. Multi-sensor synthesis of the mesoscale structure of a cold-air comma cloud system
K A Browning, P Panagi and E M Dicks
March 2000

113. Observations of stratospheric air entering the circulation of a polar low
Abstract
K A Browning and E M Dicks
May 2000

114. Wind pofiler - Unified Model comparison statistics
Abstract
Peter Panagi and Ed Dicks
March 2000

115. Towards a similarity theory of moist convective updrafts
Abstract
Olaf Stiller and George C Craig
May 2000

116. The mystery of striated cloud heads in satellite imagery
Abstract
R S Dixon, K A Browning and G J Shutts
April 2000

117. MDIAG: a Fortran 90 program to compute diagnostics on pressure levels from Unified Model data on model levels
Abstract
Peter Panagi
June 2000

118. Rearrangements of functions with applications to meteorology and ideal fluid flow
Abstract
R J Douglas
June 2000

119. Tests of New Dynamics Model on the FASTEX IOP16 case
Abstract
Humphrey Lean
September 2000

120. A classification of FASTEX cyclones using a height-attributable QG vertical motion diagnostic
Abstract
A C L Deveson, K A Browning, T D Hewson
September 2000

121.Measurements of dissipation rate in frontal zones
Abstract
D Chapman, K A Browning
August 2000

122.Not Issued Yet

123.A Case Study of High Resolution Fog Forecasts with the New Dynamics
Abstract
P Clark
November 2000

124.Comparison of ECMWF Winter-Season Cloud Fraction with Radar Derived Values
Abstract
Robin J Hogan, Christian Jakob, Anthony J Illingworth
January 2001

125.Deriving Cloud overlap statistics from radar
Abstract
Robin J Hogan, Anthony J Illingworth
January 2001

126.Results from simulations of an organised convective event using the New Dynamics at 12, 4 and 2km resolution.
Abstract
Nigel Roberts
January 2001

127.A North Atlantic Survey of Cyclogenesis in 1999: Unified Model Performance in Short Range Forcasts & The Relationship Between Potential Voricity, Water Vapour Imagery and Analysis Accuracy.
Abstract
Adrian Semple
March 2001

128.Are there higher-accuracy analogues of semigeostrophic theory?
Abstract
Ian Roulstone, Michael E. McIntyre
June 2001

129.Stacked slantwise convective circulations.
Abstract
K A Browning, D Chapman, R S Dixon
April 2001

130.A Meteorological Assessment of the Geostrophic Co-ordinate Transform and Error Breeding System when used in 3D Variational Data Assimilation.
Abstract
Adrian Semple
June 2001

131.The dynamics of a mid-latitude cyclone with strong latent heat release.
Abstract
Farhang Ahmadi-Givi, George Craig
July 2001

132.A Study of the Effects of Horizontal and Vertical Resolution in the new Dynamics representation of Faxtex IOP16.
Abstract
Humphrey Lean
October 2001

133.Modelling Low Level Winds with the Met Office New Dynamics Model
Abstract
Rachel A Capon
9 May 2002

134.Layer-wise attribution of vertical motion and the infdluence of potential-vorticity anomalies on synoptic development.
Abstract
M Dixon, A. J. Thorpe, K. A. Browning.
May 2002

135. The sting at the end of the tail: damaging winds associated with extratropicalcyclones. Part 1: observational evidence and proposed mechanisms.
Abstract
K. A. Browning.
July 2002

136.Simulation of Orgraphic Rainfall in South Wales with UM Version 5.2.
Abstract
Humphrey Lean.
July 2002

137. Fluctuations in an equilibrium convective ensemble Parts I and II: Theoretical formulation and Experimental validation
Abstract
Brenda G. Cohen, Georrge C. Craig.
September 13, 2002

138.Generalised semi-geostrophic theory on a spere
Abstract
M. J. P. Cullen, R. J.Douglas, I. Roulstone, M.J. Sewall.
January 2003

139. Issues in High Resolution Limited Area Data Assimilation for Quantitative Precipitation Forecasting.
Abstract
S. L. Dance.
February 2003

140. Results from high-resolution simulations of convective events
Abstract
N. Roberts
February 2003

141. On a Threefold Classification of Extratropical Cyclogenesis
Abstract
R. S. Plant, G. C. Craig, S. L. Dance
March 2003

142. The impact of a change to the use of the convections scheme in high-resolution simulations of convective events
Abstract
N. Roberts
April 2003

143. Controlling imbalance within VAR by the use of a Weak Constraint
Abstract
M. Dixon, I. Roulstone
2003

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