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5. On the Characteristics of the Nor'-westers of Canterbury, New Zealand.
By John T. Meeson, B.A., Christchurch, New Zealand.
| 1. | Introduction and description of phenomena of nor'westers. |
| 2. | Inquiry into the cause of their excessive heat. Compression, the usual explanation, inadequate. True explanation must take account of—(1) Original heat of equatorial aërial current, (2) heat given out when rain precipitated, (3) different capacities of wet and dry air for holding heat, and Dr. Hann's reasoning about the Swiss föhn, (4) development of heat on the left front of all cyclone; why south-west winds not hot though over high mountains. Original and acquired heat of equatorial winds. Great effect of warm ocean-currents in heating air above them. Conclusion re heat.page 9.gif) |
| 3. | Cold nor'westers. |
| 4. | The behaviour of the barometer in a nor'wester. |
| 5. | The north-west arch (of clouds). |
| 6. | The south-west wind and subsequent gyration. |
| 7. | North-west rains east of the Southern Alps. |
| 8. | Other föhn winds than the New Zealand nor'westers. |
| 9. | Their generally beneficial character. |
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