Information about weather conditions at sea is required for a number of purposes:
The Met Office gathers marine observations from four main sources:
The Met Office requires marine observations, not just from the UK and its surrounding waters (e.g. from the MAWS network), but also from the North Atlantic and global oceans (from ships, buoys and floats). The collection of marine observations is co-ordinated internationally through the Joint WMO/IOC Commission on Oceanography and Marine Meteorology (JCOMM) which has individual programmes for observations collected from ships and buoys. At a European level surface-marine observations form Voluntary Observing Ships and buoys are co-ordinated through the EUCOS Surface Marine programme (E-Surfmar).
Produced daily around 0730 UTC.