Estimate the movement path and speed of pressure systems from isobar patterns.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Geostrophic wind | Vg = (1/ρf)·∂p/∂n | Holton, An Introduction to Dynamic Meteorology |
| Steering flow | Moves with 500 hPa mean flow | Synoptic meteorology |
| High vs low | CCW in NH, CW in SH | Coriolis effect |
| Front movement | Cold front ≈0.8× steering | Synoptic theory |
| Pressure gradient | Tighter isobars → stronger wind | Geostrophic relation |
| 24h pressure change | Δp24 < −5 hPa signals deepening | Synoptic practice |
输入当前本站气压与近 3 小时气压变化量,依据气压高低判定气压系统类型,结合变压趋势判断气压系统的移动方向与强度变化,并给出未来天气走向的经验性展望。
工作与生活中的相关计算与查询。