© Crown copyright Met Office Cloud observations at Cardington Simon Osborne (OBR, Cardington) OBR Conference, 11 th -13 th December 2012.

Slides:

Advertisements

Similar presentations

Lidar observations of mixed-phase clouds Robin Hogan, Anthony Illingworth, Ewan OConnor & Mukunda Dev Behera University of Reading UK Overview Enhanced.

Advertisements

Ewan OConnor, Anthony Illingworth, Robin Hogan and the Cloudnet team Cloudnet.

Ewan OConnor, Robin Hogan, Anthony Illingworth Drizzle comparisons.

Ewan OConnor, Robin Hogan, Anthony Illingworth, Nicolas Gaussiat Radar/lidar observations of boundary layer clouds.

Anthony Illingworth, + Robin Hogan, Ewan OConnor, U of Reading, UK and the CloudNET team (F, D, NL, S, Su). Reading: 19 Feb 08 – Meeting with Met office.

Radar/lidar observations of boundary layer clouds

Application of Cloudnet data in the validation of SCIAMACHY cloud height products Ping Wang Piet Stammes KNMI, De Bilt, The Netherlands CESAR Science day,

Exploiting multiple scattering in CALIPSO measurements to retrieve liquid cloud properties Nicola Pounder, Robin Hogan, Lee Hawkness-Smith, Andrew Barrett.

The Barbados Cloud Observatory: a first outlook

Page 1© Crown copyright The Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 Steve Abel First VOCALS Regional Experiment (REx) Preparatory.

General: Very likely both aircraft are to be based at Arica. The UK recce is early April, both Arica and Iquique will be visited. Total of 120 flight hours.

Clouds and Climate: Forced Changes to Clouds SOEE3410 Ken Carslaw Lecture 4 of a series of 5 on clouds and climate Properties and distribution of clouds.

Atmospheric structure from lidar and radar Jens Bösenberg 1.Motivation 2.Layer structure 3.Water vapour profiling 4.Turbulence structure 5.Cloud profiling.

The Centre for Australian Weather and Climate Research A partnership between CSIRO and the Bureau of Meteorology The Effect of Turbulence on Cloud Microstructure,

Remote sensing of Stratocumulus using radar/lidar synergy Ewan O’Connor, Anthony Illingworth & Robin Hogan University of Reading.

TReSS (Transportable Remote Sensing Station) in Tamanrasset Overview of TReSS Status of implementation on April 1 st 2006 Operations in the framework of.

© Crown copyright Met Office Met Office VOCALS activities and interests Phil Brown, Steve Abel and others 29 th July 2008 VOCALS-UK Planning Meeting.

Robert Wood, University of Washington many contributors VOCALS-REx Facility Status – NSF C-130.

EPIC 2001 SE Pacific Stratocumulus Cruise 9-24 October 2001 Chris Bretherton and Sandra Yuter (U. Wash.) Chris Fairall, Taneil Uttal (NOAA/ETL) Bob Weller.

Figure 2.10 IPCC Working Group I (2007) Clouds and Radiation Through a Soda Straw.

IRCTR - International Research Centre for Telecommunication and Radar ATMOS Ice crystals properties retrieval within ice and mixed-phase clouds using the.

Observed and modelled long-term water cloud statistics for the Murg Valley Kerstin Ebell, Susanne Crewell, Ulrich Löhnert Institute for Geophysics and.

Remote-sensing of the environment (RSE) ATMOS Analysis of the Composition of Clouds with Extended Polarization Techniques L. Pfitzenmaier, H. Russchenbergs.

Application of a High-Pulse-Rate, Low-Pulse-Energy Doppler Lidar for Airborne Pollution Transport Measurement Mike Hardesty 1,4, Sara Tucker 4*,Guy Pearson.

© Crown copyright Met Office Future Upper-Air Network Development (FUND)-Integration TECO 2008 St Petersburg Russia Catherine Gaffard, John Nash, Alec.

Precipitation and albedo variability in marine low clouds

Ship-based measurements of cloud microphysics and PBL properties in precipitating trade cumulus clouds during RICO Allen White and Jeff Hare, University.

Characterization of Arctic Mixed-Phase Cloudy Boundary Layers with the Adiabatic Assumption Paquita Zuidema*, Janet Intrieri, Sergey Matrosov, Matthew.

Determination of the optical thickness and effective radius from reflected solar radiation measurements David Painemal MPO531.

CloudNet: TARA status and database H. Russchenberg, O. Krasnov Delft University of Technology – IRCTR, The Netherlands.

Page 1© Crown copyright 2004 Cirrus Measurements during the EAQUATE Campaign C. Lee, A.J. Baran, P.N. Francis, M.D. Glew, S.M. Newman and J.P. Taylor.

Page 1 Validation by Balloons and Aircraft - ESRIN - 9– 13 December 2002 Observations of aerosol and clouds obtained during the M-55 Geophysica ENVISAT.

EPIC 2001 SE Pacific Stratocumulus Cruise 9-24 October 2001 Rob Wood, Chris Bretherton and Sandra Yuter (University of Washington) Chris Fairall, Taneil.

Evaluating forecasts of the evolution of the cloudy boundary layer using radar and lidar observations Andrew Barrett, Robin Hogan and Ewan O’Connor Submitted.

RICO Modeling Studies Group interests RICO data in support of studies.

Water cloud retrievals O. A. Krasnov and H. W. J. Russchenberg International Research Centre for Telecommunications-transmission and Radar, Faculty of.

Radiative Atmospheric Divergence using ARM Mobile Facility, GERB data and AMMA stations –led by Tony Slingo, ESSC, Reading University, UK Links the ARM.

Robin Hogan Ewan O’Connor The Instrument Synergy/ Target Categorization product.

Matthew Shupe Ola Persson Paul Johnston Duane Hazen Clouds during ASCOS U. of Colorado and NOAA.

April Hansen et al. [1997] proposed that absorbing aerosol may reduce cloudiness by modifying the heating rate profiles of the atmosphere. Absorbing.

Fog- and cloud-induced aerosol modification observed by the Aerosol Robotic Network (AERONET) Thomas F. Eck (Code 618 NASA GSFC) and Brent N. Holben (Code.

1 Atmospheric profiling to better understand fog and low level cloud life cycle ARM/EU workshop on algorithms, May 2013 J. Delanoe (LATMOS), JC.

Simple CCN budget in the MBL Model accounts for: Entrainment Surface production (sea-salt) Coalescence scavenging Dry deposition Model does not account.

Boundary Layer Clouds.

Robert Wood, Atmospheric Sciences, University of Washington The importance of precipitation in marine boundary layer cloud.

OVERVIEW OF THE DATA OBTAINED DURING ASTAR 2007 (ARCTIC MIXED-PHASE CLOUDS) & CIRCLE-2 (MID-LATITUDE CIRRUS) Alfons Schwarzenboeck, Guillaume Mioche, Christophe.

INUPIAQ/CLACE 2014 University of Manchester Data availability.

Institute for Atmospheric Science SCHOOL OF EARTH AND ENVIRONMENT UNIVERSITY OF LEEDS Tethered Soundings & Profiling Cathryn Birch Ian Brooks.

The EPIC 2001 SE Pacific Stratocumulus Cruise: Implications for Cloudsat as a stratocumulus drizzle meter Rob Wood, Chris Bretherton and Sandra Yuter (University.

Page 1 © Crown copyright 2004 Aircraft observations of Biomass burning aerosol Ben Johnson, Simon Osborne & Jim Haywood AMMA SOP0 Meeting, Exeter, 15 th.

UNIVERSITY OF BASILICATA CNR-IMAA (Consiglio Nazionale delle Ricerche Istituto di Metodologie per l’Analisi Ambientale) Tito Scalo (PZ) Analysis and interpretation.

CLARIFY-2016 Cloud characterisation and aerosol-cloud-interaction flight planning Steven Abel, 29 th February 2016, Birmingham.

The study of cloud and aerosol properties during CalNex using newly developed spectral methods Patrick J. McBride, Samuel LeBlanc, K. Sebastian Schmidt,

© Crown copyright Met Office Boundary layer research at the UK Met Office Research Unit, Cardington Jeremy Price, Met Office Research Unit, Cardington,

PIKNMIX-C Cold-air outbreak sorties

COSMICS Cold-air outbreak sorties

Seamless turbulence parametrization across model resolutions

Aerosol observations at Cardington

Emma Hopkin University of Reading

GAP Measurements and Instrumentation

Understanding warm rain formation using CloudSat and the A-Train

NPOESS Airborne Sounder Testbed (NAST)

Group interests RICO data required

Control of Cloud Droplet Concentration in Marine Stratocumulus Clouds

EPIC 2001 SE Pacific Stratocumulus Cruise 9-24 October 2001 Rob Wood, Chris Bretherton and Sandra Yuter (University of Washington) Chris Fairall, Taneil.

EPIC 2001 SE Pacific Stratocumulus Cruise 9-24 October 2001 Rob Wood, Chris Bretherton and Sandra Yuter (University of Washington) Chris Fairall, Taneil.

EPIC 2001 SE Pacific Stratocumulus Cruise 9-24 October 2001 Rob Wood, Chris Bretherton and Sandra Yuter (University of Washington) Chris Fairall, Taneil.

The EPIC 2001 SE Pacific Stratocumulus Cruise: Implications for Cloudsat as a stratocumulus drizzle meter Rob Wood, Chris Bretherton and Sandra Yuter.

Group interests RICO data in support of studies

Meteorological Instrumentation and Observations

Presentation transcript:

© Crown copyright Met Office Cloud observations at Cardington Simon Osborne (OBR, Cardington) OBR Conference, 11 th -13 th December 2012

© Crown copyright Met Office Roach et al., 1976 The physics of radiation fog. QJRMS, vol 102, pp Fog drop size distributions on slides, 1971–1972 Start of modern era… Slingo et al., 1982 A field study of nocturnal stratocumulus. QJRMS, vol 108, pp Tethered balloon ASSP data from 1976–1978

© Crown copyright Met Office Instruments– present day… In situ instruments: DMT Cloud Droplet Probe (CDP) Modified for ground use Fog: 2 metre surface mount with aspirator, ~8 m s -1 Fog/St/Sc: tethered helium balloon, up to 5000ft, ambient wind Partnered with lightweight turbulence probe Ground use only e.g. fog/visibility work: Optec NGN-3a nephelometer (total scatter coeff) Grimm aerosol spectrometer (0.2–30  m)

© Crown copyright Met Office Instruments— remote sensing Microwave radiometers (Radiometrics, Hatpro) Column vapour & liquid water Halo Doppler lidar, 1.5  m scanning SN 1ceiling  7 km SN 30de-polarising ( ,  ), 9 km SN 35de-polarising, 14 km for volcanic ash Vaisala LD40 ceilometer,  m (b scat only) Jenoptik CHM15k lidar,  m (b scat only)

© Crown copyright Met Office Halo Lidars

© Crown copyright Met Office Example Halo calibration red data filtered for e.g. cloud height, peak backscatter mean S = (theory=20) Therefore scale backscatter by 1.08 S = lidar ratio (extinction to backscatter ratio) Need optically thick liquid cloud.

© Crown copyright Met Office Use of lidar data to measure drizzle rates below cloud… Start with calibrated backscatter, 27 th Nov 2011 “Colour ratio” = 1.5  m Halo backscatter gridded 1.5  m Halo backscatter  m LD40 backscatter gridded  m LD40 backscatter colour ratio

© Crown copyright Met Office Potential to look at precipitation susceptibility to aerosol concentration Mie theory to retrieve drop size, water content etc Westbrook et al (2010) Atmos. Meas. Tech., 3, D 0 retrieval LWC retrieval Drizzle rate retrieval Drizzle rate (red=observed at 2m, black=retrieved peak) aerosol conc (black), LWP (red)

© Crown copyright Met Office COALESC-2012, May 29 th, Halo lidar turbulence beneath sheet of stratocumulus (TKE, m 2 s -2 per unit mass) km, Chilbolton TKE 60 km, Denver Sluice TKE 0 km, Weybourne TKE 140 km, Cardington TKE

© Crown copyright Met Office COALESC-2011

© Crown copyright Met Office COALESC, March 2011 Case studies of evolution of stratocumulus over land 1–4 March Denver Sluice: ceilometer cloud base and modelled cloud depth sonde tops 1 March 1245 UTC 2 March 1245 UTC

© Crown copyright Met Office COALESC 16 March 2011 example of turbulence probe and CDP data from tethered balloon at Cardington

© Crown copyright Met Office 2 March: balloon (Cardington) and aircraft (coast) droplet size distributions equal sample volumes: balloon data = 15 min, aircraft data = 60 sec

© Crown copyright Met Office COALESC-2011 Profiles of droplet concentration: aircraft (off coast) balloon (Cardington) cm -3 in moderate to high pollution, no significant drizzle

© Crown copyright Met Office LWP: observed and modelled (4km, 1km, 333m, 100m resolutions) 1–2 March 2011 Weybourne Denver Chilbolton Figure from Ian Boutle & Jack Eyre

© Crown copyright Met Office Radiation fog: overnight deployment of CDP at 2 m 24 March 2011

© Crown copyright Met Office Radiation fog: balloon flight on morning of 24 March 2011

© Crown copyright Met Office Radiation fog: droplet size distributions during profiles number volume

© Crown copyright Met Office Future instrument work Fog: use of CAPS (CAS bit) for looking at small fog drops: error in LWC is large <10  m Hertfordshire lightweight OPC (aerosol/cloud): balloon, UAS, ground scatter deployment Hot-wire device for measuring LWC directly ? How good are these for <10  m droplets?

© Crown copyright Met Office Future science work Cloud top entrainment: measure TKE and buoyancy flux profiles at top ± 100 m. Long porpoise runs with balloon video camera. Compare balloon and lidar vertical winds below cloud (and just within cloud base- viz. droplet generation region) Night-time stratocumulus: full 24 hr cycle ? Day/night turbulent structure. No night aircraft Sc flights in recent years…? Closing paragraph of Wood (2012) review paper. Doppler lidar data in general under-used regardless of meteorology / cloud conditions.