Dr Steven Dobbie GCSS WG2 Chairman Institute for Atmospheric Science School of Earth and Environment University of Leeds, LS2 9JT Tel: 0113-343-6725 Fax: 0113-343-6716 Email: dobbie@env.leeds.ac.uk Personal web: www.env.leeds.ac.uk/~dobbie

Huiyi Yang Institute for Atmospheric Science School of Earth and Environment University of Leeds, LS2 9JT Tel:0113-343-7966 Fax:0113-343-6716 Email: huiyi@env.leeds.ac.uk