Middle Latitudes - 30to 60 Sublime ridiculous but why is it so - PowerPoint PPT Presentation

Middle Latitudes - 30°to 60° Sublime… …ridiculous but why is it so changeable?

Sea Surface Temperatures – January (2008) NH Ice Limits 60 N 30 N

www.youtube.com/watch?v=jup-5Xu1OOU Middle latitudes have interesting weather patterns but are very unpredictable. Making navigation and operations challenging!

How do we predict and plan for weather changes? Jet Stream Warmer Colder Area Area http://www.metoffice.gov.uk/public/weather/marine

How do we predict and plan for weather changes? Surface Weather http://www.metoffice.gov.uk/public/weather/marine

How do we interpret wind? Wind moves from high to low pressure (pressure gradient). Then is deflected by Coriolis.

Wind Speed

Anticyclone (High Pressure)

Depression (Low Pressure)

FRONTAL SYSTEMS Cirrus Cirro Alto Cumulonimbus Stratus Stratus Stratus Cumulus Nimbo Strato Stratus Cumulus Cumulus WARM Fog Rain Heavy Rain COLD AIR COOL AIR AIR Showers

Ships use forecasts to determine the most appropriate routes.

Good forecasting and planning allows us to execute the safest and most efficient operations in a naturally dangerous environment. http://www.uk.endress.com/