Research Article
An Exploration of Temperature Metrics for Further Developing the Heat-Health Weather Warning System in Hong Kong
Table 4
Summary of threshold temperatures for various temperature metrics.
| Temperature metrics | Threshold temperature (°C) | No. of days exceeded from 1999 to 2009 | % increase in median mortality anomaly |
|
(summer) | | | | All-cause | ≥35 | 3 | 2.5 | RD | Nil | Nil | Nil | CVD | ≥35 | 3 | 15 | (winter) | | | | All-cause | Nil | Nil | Nil | RD | ≥21 | 14 | 6 | CVD | ≥21 | 14 | 2.5 | Mean AT | | | | All-cause | ≤8 | 10 | 2.5 | RD | Nil | Nil | Nil | CVD | ≤8 (≥38) | 10 (52) | 4 (7) | Mean NET | | | | All-cause | ≥27 | 4 | 2 | RD | ≤−3 | 10 | 12 | CVD | ≥27 | 4 | 11 | Max NET (summer) | | | | All-cause | Nil | Nil | Nil | RD | Nil | Nil | Nil | CVD | ≥30 | 38 | 4 | Min NET (winter) | Nil for all-cause, RD, and CVD | DTR (all season) | | | | All-cause | ≥10 | 5 | 6 | RD | ≥8 | 33 | 5 | CVD | ≥8 | 33 | 3 | DTR (summer) | | | | All-cause | ≥8 | 6 | 4.5 | RD | Nil | Nil | Nil | CVD | ≥8 | 6 | 16 | DTR (winter) | | | | All-cause | ≥7.1 | 23 | 1.5 | RD | ≥8 | 6 | 15 | CVD | ≥8 | 6 | 2.5 | Temp change () | | | | All-cause | ≥4.1 | 11 | 6 | RD | ≥4.1 | 11 | 7 | CVD | Nil | Nil | Nil | Temp change () | | | | All-cause | ≥5.6 | 7 | 3 | RD | ≥5.6 | 7 | 4 | CVD | Nil | Nil | Nil | Temp change () | Nil for all-cause, RD and CVD |
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