Development of standard methods for environmental data

At the request of WG-EMM-97, the Secretariat has revised the draft standard method for index F2 (sea-ice), drafted a standard method for index F5 (sea surface temperature), and begun documenting meteorological data and methodologies which may be used for calculating the draft indices F1 (sea-ice cover viewed from a CEMP site), F3 (local weather at a CEMP site) and F4 (snow cover at a CEMP site).