Acknowledgements
This research was conducted as part of the Open Air Laboratories
(OPAL) project, which is supported by the Big Lottery Fund. OPAL is
a
consortium
programme
led
by
Imperial
College
London
involving
nine
regional
partners:
University
of
Central
Lancashire,
Dr
M.
Too-
good
(North
West);
University
of
Newcastle,
Dr
A.M.
Borland
(North
East);University
of
York,
Professor
M.R.
Ashmore
(Yorkshire
and
Humber); University of Nottingham, Dr P.D. Crittenden (East Mid-
lands);
University
of
Birmingham,
Dr
J.P.
Sadler
(West
Midlands);
University of Hertfordshire, Dr M.A. Burton (East of England);