Warm, Cold, and Temperate Winds.
This has been shown more clearly by grouping the winds together according to their mean effect on atmospheric temperature. It was found that the mean difference between the observed temperatures and first-order curve temperatures for the whole year for—
| 1. | E. | wind (as defined above) was | −3·1 F. |
| 2. | N.-E. | wind (as„ defined„ above) was„ | −4·0 |
| 3. | N. | wind (as„ defined„ above) was„ | −3·5 |
| 4. | S.-E. | wind (as„ defined„ above) was„ | −0·6 |
| 5. | N.-W. | wind (as„ defined„ above) was„ | −0·7 |
| 6. | W. | wind (as„ defined„ above) was„ | +1·9 |
| 7. | S.-W. | wind (as„ defined„ above) was„ | +2·2 |
| 8. | S. | wind (as„ defined„ above) was„ | +2·5 |
Seeing that the first three of these had a decided cooling effect, the next two a very slight cooling effect, and the last three a decided warming effect on the first order atmospheric temperature, these winds were studied in three groups, which we will call the "cold," "temperate," and "warm," and temperature curves were drawn for each of these groups (Diagram 4). Each of these three curves shows some
DIAGRAM 4.
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resemblance with the second-order curve. There are very distinct winter maxima in February in all three. Both cold and warm winds
