Department of Meteorology, University of Reading

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Mesoscale group

Past Terms' Meetings

Spring 2018


Week Date Speakers
1 9 Jan 2018 No talk
 
2 16 Jan 2018 Dan Shipley
Mathematical techniques for atmospheric convection to improve severe weather prediction
3 23 Jan 2018 Michael Johnston
Parallels between lake effect snow and island convection
4 30 Jan 2018 David Flack
The influence of stochastic boundary layer perturbations on the forecast for Coverack
5 6 Feb 2018 Manos Flaounas (Visiting Scientist)
Medicanes as subtropical cyclones: the December 2005 case from the perspective of surface pressure tendency diagnostics and atmospheric water budget.
6 13 Feb 2018 Enhancement week
 
7 20 Feb 2018 No Talk
 
8 27 Feb 2018 Arathy Menon
2016 Indian Monsoon onset and progression in field campaign observations and a 4km model.
9 6 Mar 2018 Will McIntyre
On the path to modelling convection with conditional averaging
  **NOTE** The above meeting will take place in Meteorology Building, Room 1L43
10 13 Mar 2018 Ryan Williams
Tropospheric Ozone (O3): Seasonal and Geographical Variability, Stratospheric Influence and Recent Trends
  **NOTE** The above meeting will take place in Meteorology Building, Room 1L61
11 20 Mar 2018 Mark Muetzelfeldt
Clustering wind profiles to identify shear conditions in climate models


Autumn 2017


Week Date Speakers
1 26 Sep 2017 Luc Gerard (Visiting from Belgium Met Service)
Modelling deep convection in kilometre-scale grid meshes
2 3 Oct 2017 Michael Johnston
Environments that support cloud trails at Bermuda
3 10 Oct 2017 Will McIntyre
The numerical difficulties of advecting moisture for cloud modelling
4 17 Oct 2017 James Shaw
Numerical advection of chemical species
5 24 Oct 2017 Humphrey Lean
Representation of the convective boundary layer over London with O(100m) versions of the Unified Model
6 31 Oct 2017 Enhancement Week
No Meeting Planned
7 7 Nov 2017 David Flack
Convective-scale perturbation growth from a stochastic boundary layer parametrization
8 14 Nov 2017 Kaja Milczewska
Improving the accuracy of air quality forecasts
9 21 Nov 2017 Helene Bresson
Polar lows and the North Atlantic climate system
James Gilmore
Electric field measurements during convective clouds at Chilbolton
10 28 Nov 2017 Ambrogio Volonte
Idealised simulations of sting jets in extratropical cyclones
  **NOTE** The above meeting will take place in Meteorology Building, Room 1L61
11 5 Dec 2017 Matt Priestley
How important is clustering in 1000 year windstorm events?
12 12 Dec 2017 First-year PhD Students
Introduction to 1st Year Projects


Summer 2017


Week Date Speaker Title
1 25-April-2017 Ben Harvey 'How is negative PV created in warm conveyor belts?'
2 2-May-2017 Thorwald Stein 'Further tales of DYMECS'
3 9-May-2017 Session with PhD visiting scientist Tapio Schneider (CalTech) Ben Courtier :"Cloud Electrification in Convective Storms"
Holly Turner: "Assessing the impacts of vertical wind shear on gravity wave drag"
Ambrogio Volonté: "Dynamics of Sting Jets: key challenges and contributions from the 'Reading group'".
4 16-May-2017 Julia Curio 'Climatology of Tibetan Plateau vortices in reanalysis data and a high resolution model simulation'
5 23-May-2017 Manos Flaounas (National Observatory of Athens) 'Mediterranean cyclones: climatological aspects and dynamics'
6 30-May-2017 Bring-a-plot/discussion session /
7 6-June-2017 Alex Baker 'Resolution sensitivity of the Mediterranean winter precipitation response to RCP8.5 in HadGEM3'
8 13-June-2017 Michael Johnston & Bethan Harris /


Spring 2017


Week Date Speaker Title
1 10-January-2017 No session /
2 17-January-2017 Leo Saffin 'Maintaining tropopause sharpness in NWP models'
3 24-January-2017 Nigel Roberts 'Developments with the Fractions Skill Score'
4 31-January-2017 Bring-a-plot/discussion session /
5 7-February-2017 (1L43) Miguel Teixeira 'Theory and experiments of 3D trapped lee waves'
6 14-February-2017 Chris Holloway 'Observing convective aggregation'
7 21-February-2017 Ambrogio Volonte 'Importance of model resolution in resolving sting jets'
8 28-February-2017 Juwon Kim 'The impact of aerosols on cloud microphysics and dynamics in deep convective clouds over the UK'
9 7-March-2017 Jacob Maddison & Matt Feist 'Factors controlling forecasts of atmospheric blocking'
'Measuring convective storm turbulence with radar for model evaluation'
10 14-March-2017 Bring-a-plot/discussion session /
11 21-March-2017 Bob Plant /


Autumn 2016


Week Date Speaker Title
1 27-September-2016 Introduction/discussion session /
2 4-October-2016 Kirsty Hanley & Carol Halliwell 'Convection in the UKV'
3 11-October-2016 James Gilmore & Holly Turner 'The Effects of Charged Precipitation on the Local Electric Circuit'
'Developing a Global Field of Richardson Number'
4 18-October-2016 Session with Veronique Ducrocq (CRNM)
Talks from Humphrey Lean, Jacob Maddison & David Flack
'Mesoscale modelling Research in the Met Office@Reading'
'Forecasting blocking in the Northern Hemisphere Winter'
'Convetive-scale perturbation growth in different convective regimes'
5 25-October-2016 Sue Gray 'North Atlantic storm driving of extreme wave heights'
6 1-November-2016 Peter Clark 'Stochastic Convective boundary-layer parametrizations in the MetUM'
7 8-November-2016 Oscar Martinez-Alvarado '(Partial) Review of diabatic processes and Rossby waves'
8 15-November-2016 Mark Muetzelfeldt 'Heat and Moisture Budgets in Radiative-Convective Equilibrium Experiments'
9 22-November-2016 Helen Dacre 'Using trajectories to determine predictability limits'
10 29-November-2016 Helene Bresson & Matthew Priestley 'Applying an objective Polar low identification scheme to two high-resolution reanalyses'
'Cyclone clustering in ERA-Interim'
11 6-December-2016 Discussion/Bring-a-plot session /
12 13-December-2016 First year PhD students: Kaja Milczewska, Bethan Harris, Ryan Williams, Ben Courtier, William Mcintyre & Michael Johnston /


Summer 2016


Week Date Speaker Title
1 19-April-2016 (2pm - GU10) / /
2 26-April-2016 (2pm - GU10) Jonathan Chuen Chung Chui Convective parameterization in the grey zone
3 3-May-2016 (2pm - GU01) Oscar Martinez-Alvarado How well are probability distribution functions predicted by ensemble prediction systems?
4 10-May-2016 (2pm - GU01) Ambrogio Volonte Mechanisms generating mesoscale instability along a Sting Jet (Windstorm Tini)
5 17-May-2016 Chris Webber 'Climate impacts on hazardous UK PM10 exposure'
6 24-May-2016 Juwon Kim 'The role of turbulent mixing on clouds'
7 31-May-2016 Carly Wright 'The generation of rainbands downwind of mountains'
8 7-June-2016 (3pm - 1L61) PhD visiting scientist (Richard Rotunno): Carly Wright, Ambrogio Volonte & Leo Saffin 'Generation of downwind rainbands'
'Sting jets in extra-tropcila cyclones: generated by mesoscale instabilities?'
'Systematic effects in NWP'


Spring 2016


Week Date Speaker Title
1 12-Jan-2016 / /
2 19-Jan-2016 Seonaid Dey Characterising spatial precipitation characteristics for Summer 2013
3 26-Jan-2016 Reinhard Schiemann The resolution sensitivity of northern hemisphere blocking in four 25-km atmospheric global circulation models
4 2-Feb-2016 / /
5 9-Feb-2016 James Shaw Curl-free pressure gradients for accurate modelling of cold air pools
6 16-Feb-2016 (2pm - 1L43) Juwon Kim /
7 23-Feb-2016 Fadzil Mohd Nor /
8 1-Mar-2016 Shun-ichi Watanabe (University of Tokio) A comprehensive study on the characteristics of the polar mesocyclone over the Sea of Japan
9 8-Mar-2016 Miguel Teixeira /
10 15-Mar-2016 Carly Wright /


Autumn 2015


Week Date Speaker Title
1 29-Sep-2015 (3pm - 1L61) Neil Hart Estimating the climatological risk of sting-jet windstorms
2 06-Oct-2015 / /
3 13-Oct-2015 (3pm - 1L61) Chris Holloway Convective aggregation processes
4 20-Oct-2015 (2pm - 1L43) David Flack Model Physics Perturbation Growth in Different Regimes
5 27-Oct-2015 (3pm - 1L43) Bring-a-plot session /
6 03-Nov-2015 (2pm - 1L43) Sue Gray and Peter Clark Observation and modeling of weather-related effects induced by March 2015 eclipse
7 10-Nov-2015 Open Discussion
8 17-Nov-2015 Mini-conference with Beth Ebert: short presentation by group members and final discussion Helen Dacre: Assessing the accuracy of volcanic ash simulations?
Kirsty Hanley: Representation of convection in high resolution versions of the UM
Oscar Martinez-Alvarado: Large-scale forecast errors: can we learn anything from them?
9 24-Nov-2015 Leo Saffin PV Tracers
10 01-Dec-2015 Benoit Vanniere (Imperial College, London) The role of the cold sector of extratropical cyclones in setting atmospheric mean state features of the Gulf Stream basin
11 08-Dec-2015 Presentations from new PhD students


Summer 2015


Week Date Speaker Title
1 21-April-2015 Bring-a-plot session \
2 28-April-2015 (GU10) Carol Halliwell & Kirsty Hanley Representing convection in high resolution versions of the UM
3 05-May-2015 (GU10) Nigel Roberts Diagnosing the pressure pattern
4 12-May-2015 Tim Hewson (ECMWF) Windstorms, Freezing Rain, and Sub-grid Rainstorms - an overview of some recent work at ECMWF related to Severe Weather
5 19-May-2015 (GU10) Bob Plant An alternative perspective on some Cascade data
6 26-May-2015 Ben Harvey Using observations and theory to evaluate model convergence at fronts
7 02-Jun-2015 Oscar Martinez-Alvarado Contrasting PV features in two summer extratropical cyclones
8 09-Jun-2015 Neil Hart Instabilities associated with sting jet descents in three explosively-developing windstorms


Autumn 2014


Week Date Speaker Title
1 28-September
2 07-October (Gu10) David Hooper Mesoscale measurements of wind and atmospheric structure using the NERC MST Radar
3 14-October Oscar Martinez-Alvarado
4 21-October (Gu10) Leo Saffin
5 28-October (Gu10) Peter Clark and Neil Hart Python
6 04-November
7 11-November
8 18-November Ambrogio Volonte Investigation of Sting Jet presence in storm Tini
9 25-November David Flack Characterising the Convective Adjustment Timescale over the UK
10 02-December Carly Wright The Generation of Downwind Rainbands by Mountains
11 09-December 1st Year PhD Students Introduction


Summer 2014


Week Date Speaker Title
1 29-April-2014
2 06-May-2014 (1L43)
3 13-May-2013 (1L43)
4 20-May-2014 (Gu01) Victoria Sinclair A winter-time climatology of low-level jets in the northern polar regions
5 27-May-2014 Kirsty Hanley UM simulations of the Moore tornado
6 03-Jun-2014 Seonaid Dey Spatial ensemble characterisation for summer convective cases
7 10-Jun-2014 Matt Hawcroft Latent heating in extratropical cyclones in HiGEM, ERA-Interim and remote sensing data
8 17-Jun-2014 (1L43) Sam Clark Multi-scale MetUM simulations of a mesoscale convective system: A case study
9 24-Jun-2014 David Flack The Appropriate Use of a Convective Adjustment Timescale to Distinguish Between Regimes of Predictability
10 1-Jul-2014 (Gu10) Neil Hart On automating Lagragian-based analysis of extratropical cyclones


Spring 2014


Week Date Speaker Title
1 14-Jan-2014 -Rob Warren -Idealised numerical simulations of the sea breeze system over a peninsula
2 21-Jan-2014 TBC TBC
3 28-Jan-2014 Nigel Roberts An assessment of spatially post-processed probability forecasts from the MOGREPS-UK ensemble and the UKV model
4 04-Feb-2014 Jill Chamberlain High-resolution modelling of tropical cyclones
5 11-Feb-2014 TBC TBC
6 18-Feb-2014 Neil Hart Automating air stream identification in extratropical cyclones
7 25-Feb-2014 Bob Plant Simple models for prognostic convection
8 04-Mar-2014 Ruari Rhodes Can reanalysis represent extreme precipitation over England and Wales
9 11-Mar-2014 Chris Hollaway Convective aggregation in observations and models
10 18-Mar-2014


Autumn 2013


Week Date Speaker Title
1 8-Oct-2013 Chris Weijenborg Organisation of Potential Vorticity during severe convection
2 15-Oct-2013 Oscar Martinez-Alvarado Implications of model error for numerical weather and climate prediction
3 22-Oct-2013 Neil Hart TBC
4 29-Oct-2013 Seonaid Dey TBC
5 5-Nov-2013 Kirsty Hanley High resolution COPE simulations
6 12-Nov-2013 Helen Dacre TBC
7 19-Nov-2013 All Bring a plot
8 26-Nov-2013 Miguel Teixeira Theory and lab measurements of gravity wave drag caused by an inversion
9 3-Dec-2013 Peter Clark Some toy problems for stochastic parametrisation
10 10-Dec-2013 First year PhD students Introductions


Summer 2013


Week Date Speaker Title
1 23-Apr-2013 - -
2 30-Apr-2013 Sue Gray Model forecast error in upper-level ridge structure
3 7-May-2013 Robert Warren A numerical investigation of the effects of dry air aloft on deep convection (2010) by Richard P. James and Paul M. Markowski
4 14-May-2013 Jeff Chagnon TBC
5 21-May-2013 Nigel Roberts TBC
6 28-May-2013 Ross Bannister TBC
7 4-Jun-2013 Kirsty McBeath (Met Office) TBC
8 11-Jun-2013 Bob Plant TBC
9 18-Jun-2013 Oscar Martinez-Alvarado Contrasting the concepts 'atmospheric river' and 'warm conveyor belt': Are they synonyms?
10 25-Jun-2013 Sam Clarke TBC


Spring 2013


Week Date Speaker Title
1 15-Jan-2013 All Bring a plot session
2 22-Jan-2013 Andrew Barrett Synoptic versus orographic control on stationary convective banding.
3 29-Jan-2013 - -
4 05-Feb-2013 Robert Warren Hazardous Weather lecture practise: Supercells and tornadoes
5 12-Feb-2013 Kirsty Hanley High resolution simulations of convective storms
6 19-Feb-2013 Neil Hart 4-D visualisation made easy with IDV: Virtual flight through a sting jet
7 26-Feb-2013 Pete Clark Turbulence parametrization in convective clouds: what is the resolution of a model?
8 05-Mar-2013 Gabriele Messori (Imperial College) The sporadic nature of atmospheric heat transport
9 12-Mar-2013 Helen Dacre What happens when cyclones cross the jet stream?
10 19-Mar-2013 Neil Hart & Mike Wong TBC


Autumn 2012


WeekDateSpeakerTitle
109-Oct-2012 Miguel Teixeira Mountain waves, Oceanic Turbulence 1L61
216-Oct-2012 Matt Hawcroft Precipitation in the ECMWF dataset and teaching in Afghanistan 1L61
323-Oct-2012 All Introductions GU10
430-Oct-2012 Jeff Chagnon Diabatic potential vorticity in extratropical cyclones 1L61
508-Nov-2012 (Thursday 11am) Oscar Martínez-Alvarado Diabatic Processes and Extratropical Cyclones GU10
613-Nov-2012 Mike Glinton Conditional Symmetric Instability: Are global scale models missing something ? 1L61
720-Nov-2012 Michael Reeder (Monash University, Australia) The Meteorology of Catastrophic Wildfires over Southeastern Australia. 1L61
827-Nov-2012 Agnieszka Mega and Ruari Rhodes Environmental precursors of sting jet storms and Changes in long term variability in the rains of Sudan 1L61
904-Dec-2012 1L61
1011-Dec-2012 1L61


Summer 2012


WeekDateSpeakerTitle
124-Apr-2012
3 pm
Emilie Carter Progress on representing convection at various high horizontal resolutions in the U
201-May-2012
308-May-2012 David McNamara Boundary Layer Ventilation of Mid Latitude Cyclones
415-May-2012 Mike Glinton Conditional symmetric instability, precipitation and strong surface winds
522-May-2012 Masami Narita Characteristics of different cloud microphysics schemes in the Met Office 1.5-km Unified Model for a typhoon and winter snow cases over Japan
629-May-2012 Matt Hawcroft Latent heat in Extratropical Cyclones in a high resolution climate model, reanalysis and remote sensing
705-Jun-2012 Bank holiday
812-Jun-2012 Cimene Daleu Modelling the interactions between tropical convection and large scale dynamics
919-Jun-2012 Oscar Martínez-Alvarado TBC
1026-Jun-2012 Laura Baker TBC


Spring 2011


WeekDateSpeakerTitle
118-Jan-2011 Bring-A-Plot session
225-Jan-2011 Oscar Martínez-Alvarado Discussion: Frequency and distribution of sting jets in intense winter North-Atlantic cyclones
301-Feb-2011 Sue Gray Challenges in mesoscale meteorology
4Monday 07-Feb-2011 Michael Glinton Discussion on Linstrom and Nordeng (1992)
515-Feb-2011 Chimene Daleu Modelling the Interactions between Tropical Convection and Large-scale Dynamics
622-Feb-2011 Dan Kirshbaum Further results on trade-wind convection over tropical islands
701-Mar-2011 Kirsty Hanley Ensemble simulations of a squall line during COPS: verification and mechanisms
808-Mar-2011 Dirk Cannon A scaling of orographic precipitation, for both stratiform and convective clouds
915-Mar-2011 Jeffrey Chagnon What controls the emergence of time and space scales in fields of convection?
1022-Mar-2011 Helen Dacre


Autumn 2010


WeekDateSpeakerTitle
111-Oct-2010 No meeting
218-Oct-2010 Bring-A-Plot session
325-Oct-2010 No meeting
401-Nov-2010 Oscar Martínez-Alvarado A first look into a contingency table for sting jets
508-Nov-2010 No meeting
615-Nov-2010 Jeffrey Chagnon A pre-frontal surge wave: Case study analysis and idealised simulation
722-Nov-2010 Emilie Carter COLPEX: Cold Air Pooling Experiment.
829-Nov-2010 Emma Irvine Aviation, weather and contrails
906-Dec-2010 Carol Halliwell Assessing the available options for subgrid-scale mixing in the UM using the Idealised UM
1013-Dec-2010 TBC TBC


Autumn 2009


WeekDateSpeakerTitle
105-Oct-2009 Everybody Bring-A-Plot session
212-Oct-2009 Nigel Roberts Downscaling a 1.5km ensemble - First case study
319-Oct-2009 Helen Dacre Can SAL be used to validate air quality forecasts?
426-Oct-2009 Giovanni Leoncini Ensemble simulations for the Boscastle flood: perturbations, physics and convergence lines
502-Nov-2009 Emma Irvine Why does targeted observing (sometimes) fail? Experiments using synthetic targeted observations containing a baroclinic structure.
609-Nov-2009 Kirsty Hanley High resolution ensemble simulations of an isolated convective storm during COPS.
716-Nov-2009 Aymeric Spiga (Open University) Mesoscale and microscale meteorology on Mars.
823-Nov-2009 Humphrey Lean & Daniel Kirshbaum Orographic precipitation and the seeder-feeder mechanism.
930-Nov-2009 Jeffrey Chagnon Thorpex - North Atlantic Waveguide and Downstream impacts Experiment (T-NAWDEx): Some preliminary ideas and a pilot study
1007-Dec-2009 Carol Halliwell Part I: Subgrid-scale mixing in the UM - where we are now... Part II: The Idealised UM and why you would want to use it!


Autumn 2008


WeekDateSpeakerTitle
107-Oct-2008(bring a plot session) TBA
214-Oct-2008Sue Gray TBA
321-Oct-2008Jeffrey Chagnon TBA
428-Oct-2008Chris Holloway TBA
504-Nov-2008Victoria Sinclair TBA
611-Nov-2008Michael Ball TBA
718-Nov-2008Richard Keane TBA
825-Nov-2008Emma Irvine TBA
902-Dec-2008Laura Baker TBA
1009-Dec-2008Dirk Cannon and Dan Peake TBA