AMMA-UK Cambridge 17th January 2006 Chair: Doug Parker

AMMA-UK Cambridge 17th January 2006

Chair: Doug Parker

1030 - 1045 Intro. and AMMA news (Doug Parker)

1045 - 1215 Short science talks1045 - Update on flux stations (Colin Lloyd)1055 - Land surface diagnostics during dry run (Phil Harris)1105 - Impacts of soil moisture on storm initiation (Chris Taylor)1115 - Atmospheric controls on mineral aerosols in the Saharan heat low (Richard Washington)1125 - The nocturnal boundary layer during August 2005 (Caroline Bain)1135 - Mineral dust and its influence on radiative fluxes at Hombori in April 2005 (Sally Lavender) 1145 - Lab leaf studies (Ally Lewis)1155 - Forecasting dry run of August 2005 (Doug Parker)1205 - Discussion

1215 - 1300 Lunch

Chair: Chris Taylor

1300 - 1400 Scientific planning1300 - OWP5 SCOUT small balloon campaign (John Pyle)1315 - OWP3 sodars, tethersonde and radiosondes (Doug Parker)1330 - OWP4 review of flight plans (Claire Reeves)1345 - new activities, e.g. ground-based chemistry in Benin (Julie Saxton)

1400 - 1430 Break out groups- Location of GCs- Radiosondes ? Thethersondes ?- Modelling ?- Other ?

1430 - 1500 Logistical discussions (1)1400 - Personnel schedules (Dave Stewart)1415 - Shipping, Accommodation etc (Dave Stewart)

1500 - 1530 Tea

Chair: Claire Reeves

1545 - 1700 Logistical discussions (2)1545 - H+S discussion (Colin Lloyd and Ruth Purvis)1620 - Visas, etc, (Ruth Purvis)1640 - Aircraft instrument fit (Ruth Purvis or Alan Woolley)1655 - AMMA Metadatabase (Claire Reeves)

1530 - 1545 Modelling1530 - Modelling strategy (Glenn Carver)

•I1.4 Surface-atmosphere: Land-atmosphere interactions (SOP2-a2 – Parker)

Week 29/5 5/6 12/6 19/6

26/6 3/7 10/7

17/7

24/7

31/7

7/8

14/8

21/8

28/8

4/9

11/9

SOP # SOP1 SOP2

Dates 1 June – 30 June 1 July – 15 Sept

Aircraft SOP 1-a SOP 2-a1 SOP 2-a2 SOP 2-a3

Dates 1 – 15 June 1 – 15 July 17 July – 25 August 1 – 15 Sept

BAe146 17 July – 21 August 22 – 28/8

ATR 1 – 15 June 1 – 15 July 25 July – 25 August

F-F20 1 – 15 June 1 – 15 July 25 July – 25 August 1 – 15 Sept

D-F20 1 – 15 July 31 July – 18 August

Geoph. 31 July – 18 August

Ground

Dano fluxes 1-15 June 23 July – 20 August

Dano r’sondes 1-15 June 23 July – 20 August

Driftsondes 15 July – 15 August (N’Djamena)

Ocean soundings

25 May – 7 July (R/V Atalante)

Oceanic mast 25 May – 7 July (R/V Atalante)

Constant vol. balloons

15 June – 15 July

Tethered balloon

17 July – 21 August

Sodar network 1 June – 21 August

MIT C-band radar

1 June – 15 August

Ronsard radar 15 June – 15 September

Bistatic radar 15 June – 15 September

Micro rain radar January-December

Lidar network M’bour, Niamey (ARM Mobile Facility), Banizoumbou, Djougou, Tamanrasset (TReSS)

Lidar ceilometer Niamey (ARM Mobile Facility), Djougou

Deposition fluxes

M’Bour, Cinzana, Banizoumbou

Aerosol characterisation

M’Bour, Cinzana, Banizoumbou, Tamanrasset, Djougou

Chem. instruments

SOP 2a1 & 2a2

Lightning network

SOP 1 & SOP 2

Microwave radiometer

January-December

UHF radar

GPS network Tombouctou, Ouagadougou and Tamale

RS network SOP southern, northern and western quadrilaterals

ARM Mobile Facility

January-December

Soil moisture radar

June-September

Ozone soundings

Cotonou


45 min ~ 270 km

45 min ~ 270 km

30 min

s~ 1 hour

500 ft

24 kft / FL240~ 400 hPa

75 min ~ 450 km

75 min ~ 450 km

30 min

s~ 1 hour

500 ft

24 kft / FL240~ 400 hPa

50 min ~ 300 km

50 min ~ 300 km

30 min

s ~ 50 min

500 ft

24 kft / FL240~ 400 hPa


J-1 J0 J+1 J+2

Daytime precipitation

Am pm am pm am Pm

0600 1200 1200 1200

1000 1600 1600 1600

J-1 J0 J+1 J+2

Evening / nocturnal

precipitation

Am pm am pm am Pm

1200 0700 1200 1200

1500 1000 1500 1500

J-1 J0 J+1 J+2

Evening / nocturnal

precipitation

pm1 pm2 am pm am Pm

1200 1800 1200 1200

1500 2100 1500 1500

Table 2.4.1: Sets of proposed take-off and landing times for I1.4 flights over soil moisture patterns ((i) above), beginning on day J0, conditional on the timing of different rainfall events prior to J0. Flights having taken place on J-2 or J-1 would be desirable. Local time assumed.


J0 J+1

Am pm am Pm

0400 0400 1200

1000 1000 1500

Table 2.4.2: Proposed take-off and landing times for I1.4 flights over vegetation patterns ((ii) above), beginning on day J0 and typically following rainfall on day J-1. Flights having taken place on J-2 or J-1 would be desirable. Local time assumed.

•I1.5: Vegetation emission surveys (SOP2-a2 – Reeves, Parker)

500 ft

6000ft ?

60 miles

Top of BL

•I1.6: Urban surveys (SOP2-a2 – Parker, Lewis)

•Coordinated MCS flights I2: Dynamics and chemistry of MCSs (SOP 2a1, SOP 2a2 – Mari, Flamant, Reeves, Hoeller)

•I3: Long range transport surveys (SOP2-a2 – Reeves, Mari, Schlager)

• I3.1: Impact of Mesoscale Convective Systems on TTL composition (MCS-TTL)

•I3: Long range transport surveys (SOP2-a2 – Reeves, Mari, Schlager)

•I3.2: Large-scale impacts of deep convection – long-range transport (LRT-TTL)

Ouaga Deployment Meeting 30-31 Jan at IPSL Paris

31st Joint flights with aircraft based in Niamey

IOP Flight funding

I1 I2 I3 I4

I1.1 I1.2 I1.3 I1.4 I1.5 I1.6 I1.7 I2.1 I3.1 I3.2 I4.1 I4.2

BAe146 NERC NERC NERC NERC EU

EU

ATR API API API API API API

F-F20 API API API API API API API

D-F20 EU EU EU

M55 EEIG

INSUCNES

EU

IOP BAe-146 Flight Hours

BAe146

Flight planI1.1 I1.2 I1.3 I1.4 I1.5 I1.6 I1.7 I2.1

and I2.2

I3 I4.1 I4.2

I1.7.1 I1.7.2

Description of FP

ITF and Heat Low

Aerosol emissions/

squall passage N/S Land/Atmos/Oc

ean interact

Land/Atmos interact

Veget.

emission

Urban

Survey

Aerosol mixing. Hygroscopicity Dyn

and Chem

of MCS

Long range transp

ort

Mesoscale

structure

Vertical

structure

Before squall line

After squall line

Niamey-cotonou +guinee

gulf

Niamey-

Hombori

FH/flight 4 4 2 4 4

nb of flights 12 5 2 4 3

Total FH 48 20 4 16 12

typical time of flights

0600-1000, 1400-1800

1200-1600

anyvariabl

evariab

le

Total 100

Flight Planning

Flight Planning

IOP pattern I1.1: ITF and Heat Low Surveys

I1.2: DrySquall Line Passage

I1.3: N-SLand-Ocean-AtmosphereInteractions

I1.4: Land-atmosphere

I1.5: VegetationEmissionSurveys

I1.6: Urban Surveys

I1.7: AerosolMixingandHygroscopicity

I2: Dynamics and Chemistry of MCSs

I3: Long Range Transport

I4: MCSsMesoscale & vertical Structure

Key Phenomena/ Lead time

24 hours 24 hours or less

1-4 days 1-4 days 24 hours 12 hours 1-4 days 24 hours 1-3 days 24 hours or less

Intraseasonal regime

Flights before

and after monsoon

onset

Pre-onset

Monsoon onset.

Presence of wet or dry period; likelihood of subsequent rain

Presence of wet or dry period

N/A N/A Presence of a wet or dry

period

Needs to be defined.

Presence of a wet period

Heat Low Intensity of heat

low

N/A Intensity of heat low

Intensity of heat low

N/A N/A N/A N/A N/A N/A

ITCZ/ITF Location of ITF affects flight

patterns

N/A Location of ITCZ affects flight pattern

May influence latitude of flights

May influence latitude of flights

N/A Location of ITCZ affects flight pattern

Influences convective

regime.

N/A N/A

Jets (AEJ, TEJ, STJ)

ConsiderAEJ

position and

strength

N/A N/A May influence latitude of flights

Affect latitude of flights

N/A N/A Influences convective

regime.

Jet strengths influence outflow

Influences convection

regime

AEWs and vortices

Consider AEW

activity and

phase.

N/A Consider AEW activity and phase.

May influence location of flights

Location and intensity of trough/ridge patterns and vortices

N/A N/A Location and intensity of trough/ridge patterns and

vortices

Consider AEW

activity and phase.

N/A

Dry intrusions

N/A N/A N/A N/A May be relevant to AEW patterns

N/A N/A Location and depth of dry

air

Strong SAL

intrusions wil be of interest

N/A

MCSs and convection

Avoid Cb Dry squall

events.

Seek land surface

responses to Cb. Avoid Cb during flights.

Seek land surface

responses to Cb. Avoid Cb during flights

Avoid Cb Avoid Cb

Avoid Cb MCSs over the

mesoscale ground sites

May follow MCS

events from east to west

MCS over the radar

ground sites or within the swath of the

A-Train

Non-precipitating convection

N/A N/A N/A May Influence

flight pattern

Northward extent may

affect latitude of

flights

N/A May Influence

flight pattern

N/A Northward extent may

affect latitude of

flights

N/A

Land surface

Flights before

and after monsoon

onset

Dust emission

& depositio

n

N/A Soil moisture will guide

flight planning

Strong E-W soil moisture

variability

N/A N/A Rainfall on dry surface

could be attractive.

Probably N/A –

needs to be clarified

N/A

Special products

N/A Satellite aerosol

products.

N/A Soil moisture patterns from

satellite

Chemical trajectories.

Soil moisture patterns

from satellite

N/A Soil moisture patterns

from satellite

Chemical trajectories

Ground based radar

products

AMMA database.

Web tool:

http://medias.obs-mip.fr/ammamd

To fill a new form or update an existing form:

login : amma-eu password : 08nov05

For any further information contact Laurence Mastrorillo:

[email protected]

http://medias.obs-mip.fr/ammamd

Documents

AMMA-UK Cambridge 17th January 2006 Chair: Doug Parker