2.4 Some observations from the JET2000 experiment Thorncroft et al, 2003 BAMS Parker et al, 2005 QJRMS.

Slides:

Advertisements

Similar presentations

Dust uplift and transport observed during the GERBILS campaign John Marsham 1, Doug Parker 1, Christian Grams 2, Qian Huang 1,3, Sarah Jones 2, Jim Haywood.

Advertisements

Following air masses through the WAM & implications for chemical processing Africa Group meeting 24 September 2007 Michelle Cain Supervisors: John Methven.

GCM Scenarios for Regional Studies over West Africa Gregory S. Jenkins Department of Meteorology Penn State University.

UU Unitah Basin WRF Model Configuration (same as DEQ) See Alcott and Steenburgh 2013 for further details on most aspects of this numerical configuration:

TropicalM. D. Eastin Tropical Waves Composite of TRMM Rainfall and Ocean Surface Wind Anomalies April Eastward propagating Kelvin waves From.

Use of the Tephigram.

Richard T. McNider Atmospheric Sciences Department University of Alabama in Huntsville The Role of the Physical Atmosphere in Air.

2007 AEW activity in Global models. - Following Berry, Thorncroft and Hewson (2007; henceforth BTH07) we use 700hPa wind to compute curvature, shear vorticity.

The Impact of Gravity Wave/Undular Bore Dissipation on the June 22, 2003 Deshler and Aurora Nebraska Tornadic Supercells AARON W. JOHNSON NOAA/NWS Weather.

TOC Back Forward Primer for Skew-T Diagram Use In Atmospheric Thermodynamics.

Skew-T Thermodynamic Diagram Global distribution of weather balloon stations.

The Well Mixed Boundary Layer as Part of the Great Plains Severe Storms Environment Jonathan Garner Storm Prediction Center.

EXPLORING LINKAGES BETWEEN PLANT- AVAILABLE SOIL MOISTURE, VEGETATION PHENOLOGY AND CONVECTIVE INITIATION By Julian Brimelow and John Hanesiak.

Summary of NOAA's 2011 Hurricane Field Program (IFEX) Shirley Murillo – 2011 HFP Field Program Director 1.

Mechanisms of land-atmosphere in the Sahel Christopher Taylor Centre for Ecology and Hydrology, Wallingford, U.K. Richard Ellis, Phil Harris (CEH) Doug.

ATM 521 Tropical Meteorology FALL ATM 521 Tropical Meteorology SPRING 2008 Instructor:Chris Thorncroft Room:ES226 Phone:

Tephigrams ENVI1400 : Lecture 8.

AMMA-UK WP3 – Convection and dynamics Doug Parker Institute for Atmospheric Science School of Earth and Environment University of Leeds 29 November 2004.

The impact of African easterly waves on the environment and characteristics of convection over West Africa Matthew A. Janiga and Chris D. Thorncroft University.

Stability & Skew-T Diagrams

Observed characteristics of the mean Sahel rainy season This talk (1) The basic state (some conclusions from the JET2000 field campaign) (2) Mesoscale.

Fine-Scale Observations of a Pre-Convective Convergence Line in the Central Great Plains on 19 June 2002 The Problem Questions: 1. How do mesoscale atmospheric.

Chapter 5 Soundings.

Section 3.4 Introduction to the West African Monsoon.

Adjustment to tropospheric warming over ocean and land surfaces Adam Sobel, John Chiang, Deborah Herceg, Liqiang Sun, Michela Biasutti + many discussions.

The impact of African easterly waves on the environment and characteristics of convection over West Africa Matthew A. Janiga and Chris D. Thorncroft NE.

ATM 521 Tropical Meteorology FALL ATM 521 Tropical Meteorology SPRING 2008 Instructor:Chris Thorncroft Room:ES226 Phone:

The Nocturnal Boundary Layer – Balloon Experiments 2005 Caroline Bain - University of Leeds Francoise Guichard (CNRM), Laurent Kergoat (CESBIO), Chris.

Corfidi, et al – convection where air parcels originate from a moist absolutely unstable layer above the PBL. Can produce severe hail, damaging.

Liam Tallis. Introduction Know the vertical distribution of water vapour in the atmosphere Profile for input into radiative transfer schemes Need to know.

Evolution of our understanding of weather systems over West Africa J.P Lafore CNRM-GAME (Météo-France) Toulouse With help and/or slide contributions from:

Lapse Rates and Stability of the Atmosphere

1 The Thermodynamic Diagram Adapted by K. Droegemeier for METR 1004 from Lectures Developed by Dr. Frank Gallagher III OU School of Meteorology.

Questions about the PBL 1.What questions should we ask? 2.What are focus characteristics? 3.How would you try to answer these questions in observations?

Xin Xi Aspects of the early morning atmospheric thermodynamic structure which affect the surface fluxes and BL growth through convection:

Detailed Observations of Five African Easterly Waves During NAMMA F. J. Schmidlin (NASA), B. J. Morrison (SSAI), E. T. Northam (SSAI), J. Gerlach (NASA)

High resolution simulation of August 1 AMMA case: impact of soil moisture initial state on the PBL dynamics and comparison with observations. S. Bastin.

Part I: Representation of the Effects of Sub- grid Scale Topography and Landuse on the Simulation of Surface Climate and Hydrology Part II: The Effects.

Chapter 5 Soundings. There are four basic types of sounding observations. –(1) Radiosondes An instrument package lifted by a balloon with sensors for.

Large-Eddy Simulations of the Nocturnal Low-Level Jet M.A. Jiménez Universitat de les Illes Balears 4th Meso-NH user’s meeting, Toulouse April 2007.

Part II: Turbulence Signature and Platform Limitations Dan Weber, Frank W. Gallagher, Ken Howard ©2000 Frank W. Gallagher III.

© University of Reading 2008www.reading.ac.ukTTISS September 2009 Impact of targeted dropsondes on European forecasts Emma Irvine Sue Gray and John Methven.

Introduction to Thermodynamic Diagrams

ITSC-1227 February-5 March 2002 Use of advanced infrared sounders in cloudy conditions Nadia Fourrié and Florence Rabier Météo France Acknowledgement G.

Page 1© Crown copyright Modelling the stable boundary layer and the role of land surface heterogeneity Anne McCabe, Bob Beare, Andy Brown EMS 2005.

Page 1© Crown copyright Cloud-resolving simulations of the tropics and the tropical tropopause layer Glenn Shutts June

African easterly wave dynamics in a full-physics numerical model. Gareth Berry and Chris Thorncroft. University at Albany/SUNY, Albany, NY,USA.

Cloud Top Heights of Cumulonimbi, Thermodynamically Estimated from Objective Analysis Data during the Baiu Season Teruyuki KATO （ Meteorological Research.

Preliminary Results from FLAGG-MD Test Flight 02/06/2015.

How to forecast the likelihood of thunderstorms!!!

Tropical Jets and Disturbances. African Easterly Waves (Figure obtained from Introduction to Tropical Meteorology, 2 nd Edition, © 2011 COMET.)

551 Tropical Advanced Topics.

Rosenstial School of Marine and Atmospheric Science

METO 637 Lesson 12.

Jianyu Liang (York U.) Yongsheng Chen (York U.) Zhiquan Liu (NCAR)

Simulation of the Arctic Mixed-Phase Clouds

Investigations of Land-Atmosphere Interactions in the West African Monsoon using Satellite remote Sensing Phil Harris1, Chris Taylor1, Doug Parker2, Richard.

551 Tropical Advanced Topics.

Impact of the vertical resolution on Climate Simulation using CESM

4.6 Hot Topics Genesis Scale Interactions

Tropical Jets and Disturbances

Questions about the PBL

Group interests RICO data required

Stability and Cloud Development

Nonlinear modulation of O3 and CO induced by mountain waves in the UTLS region during TREX Mohamed Moustaoui(1), Alex Mahalov(1), Hector Teitelbaum(2)

NRL POST Stratocumulus Cloud Modeling Efforts

Comparison of Observed Conditions with Stability Indices

Moisture Variability and Nocturnal Convection

Group interests RICO data in support of studies

Presentation transcript:

2.4 Some observations from the JET2000 experiment Thorncroft et al, 2003 BAMS Parker et al, 2005 QJRMS

C130 aircraft flew 4 legs over this region: August 2000 Dropsondes every degree Low level flights on north-south transect Met Office C-130 At Niamey Airport, Niger Experimental Details

JET2000 Period Weak AEW activity 2-5 day filtered V at 700mb (from ECMWF)

Dropsonde locations – on the 28 th August 2000

ECMWF PBL fields compared to observations Potential temperature Equivalent potential temperature

Zonal Wind 28 th August 2000

Thermodynamic Profiles 28 th August 2000

Height of AEJ

Saturated equivalent potential temperature 28 th August 2000 Close to dry adiabatic Closer to moist adiabatic

Equivalent Potential Temperature 28 th August 2000 Elevated SAL is a region of lateral mixing (e.g. q, aerosol) Variability in boundary layer θe (surface conditions)

Boundary Layer Buoyancy 28 th August 2000 Larger CIN and +ve buoyancy Smaller CIN and +ve buoyancy