chapter  13
24 Pages


The global circulations discussed in Chapter 12 are evident only after averaging the fluctuating winds that are actually measured (Note 13.A). In this chapter we consider some of the detail which was overlooked in focusing on year-long averages over the whole globe. In particular, we will consider winds on the scale of a thousand kilometres or so-the ‘synoptic scale’ (Table 1.1)—and look at day-by-day snapshots instead of long-term patterns.