Annual Airport Noise Contours Update 09th October 2008 Stewart - - PowerPoint PPT Presentation

Annual Airport Noise Contours Update

09th October 2008

Stewart Smith Environment & Surface Access Manager

Recommendations

Technical Working Group met on 03/10/08 and endorsed the following:

To move towards Annual Noise Contours produced in 16-hour summer

leq

To be modelled using Ancon Noise Model – owned & operated by the

CAA

To recommend to the Consultative Committee that this be adopted

from 2007 onwards

Example Noise Contour

Noise contour Line plotted on a map connecting points of equal sound levels Leq Equivalent Continuous Sound Level in dB(A) dB(A) A unit of sound pressure level adjusted with ‘A’ weighting to take account of sensitivity of human ear

Basic Noise Contour Inputs

Thrust Estimation Noise Calculations Radar Data Mean flight tracks & dispersion Height & Speed Profiles Traffic data Take off / landing weight Aircraft Performance Data Noise at grid points Noise Contours Contour areas Population inside contours

Noise Modelling Calculations

Annual Noise Contours

Section 106 Planning Agreement between Eastleigh Borough Council

& Southampton Airport: To produce an annual assessment of changes in the Aircraft Noise around the Airport

Hayes McKensie (INM) Noise Contours used in recent years to model

noise environment at Southampton Airport.

Leq Noise Contours

2 Models used predominantly in the UK for Leq Contours:

Integrated Noise Model (INM) – developed by the US Federal

Aviation Authority (FAA).

Ancon (Version 2.3) – UK Aircraft Noise Model maintained by

Environmental Research and Consultancy Department (ERCD) of the Civil Aviation Authority (CAA) for the Department for Transport (DfT). Ancon used at: - Heathrow, Gatwick, Stansted, Birmingham International, Scottish Airports, & Manchester Airport amongst others.

Existing Annual Contours

Hayes McKensie (INM) Noise

Contours used in recent years to model noise environment at Southampton Airport.

Include all Air Transport Movements

across the year

Current Routes being flown Additional weighting factor to

produce a ‘peak’ summer day

Southampton Specific methodology

Leq Contours

Covers the ‘peak’ 92 day period 16

June to 15 September inclusive

Based on the daily average

movements that take place in the 16 hour period (0700–2300)

Covers Current Routes being flown Consistent with the 2003

Government Air Transport White Paper & Planning Policy Guidance 24

Methodology used widely across the

UK

Comparison of Ancon & INM

Subtle differences between both noise models in terms of how data is utilised and processed Key benefits of Ancon:

Model owned and operated by the CAA Validated against actual operations at UK Airports reflecting current operating

procedures

Validation includes actual noise measurements from a number of UK airports Much more complete list of aircraft included in database than INM, rather than

substituting aircraft for best match

Now able to provide layer for GIS mapping systems

Noise Contours in both Models

Black = Ancon Red = INM

Key Annual Variables

Runway Modal Splits e.g. 2007 = 39% North 61% South Aircraft Fleet Mix changes Number of Movements Weather – Headwind, Clear skis & Pressure changes Loading Factors (weight of Aircraft) Lateral dispersion – swathe from the centre line

Ancon Vs INM Comparison

Households Comparison Ancon Vs INM

500 1000 1500 2000 2500 3000 3500 4000 4500 5000 54 57 60 63 66 69 72

Population Comparison Ancon Vs INM

2000 4000 6000 8000 10000 12000 54 57 60 63 66 69 72

Area Comparison Ancon Vs INM

1 2 3 4 5 6 7 54 57 60 63 66 69 72

57 dB(A) = onset

• f significant noise

disturbance

Technical Working Group

03rd October 2008

Stewart Smith Environment & Surface Access Manager

Noise Action Plan Consultation

DRAFT DEFRA Guidance – currently out for Consultation

with Key Stakeholders & airport operators

Consultation due to close on 28th November 2008 Final Guidance to be Published – No date yet specified Once Final Guidance is published:

• Finalise Southampton Airport Action Plan
• 3 Month Public Consultation will take place

Likely to be Early 2009

DEFRA Consultation

DEFRA Consultation on Guidance for Airport Operators open to the Public – Online at the following web address: http://www.defra.gov.uk/corporate/consult/aviation-actionplans/index.htm Extensive list of Consultees including:

Airport Operators & Aviation Interest Groups Civil Aviation Authority Local Authorities Countryside Agency & Environment Agency British Rubber Manufacturer’s Association