Question

1. Assignment Figure 3.1 is a generalized map of surface isobars over British Columbia and adjacent ocean and continental areas. Note the large high-pressure systems (anticyclones) over the Yukon and the NWT.
   1. Applying the principles of wind flow covered in Unit 3, indicate on the map the main directions of wind flow. Aim for about twenty arrows, indicating direction over the whole area of the map. (5 marks)

b.   For the four stations shown by heavy black circles, indicate the compass
      direction of the wind (i.e., N, S, etc.). (5 marks)

Yukon

Answer 1

The wind flows are subparallel or oblique to the isobars as the geostrophic winds are deflected due to friction at the surface. The winds are clockwise around the high-pressure centers, and anti-clockwise around the low-pressure center.  

The compass directions are marked as NW (northwest, behind the cold front), NE (northeast, around the low-pressure center), E (east, near the boundary between NWT and Yukon), S (south, behind the warm front).