A Study of 200hPa Mid-latitude Disturbance Excitation behind a 12-hr polar-stereographic Synoptic Scenario on Imminent Extreme Rainstorm Occurrence at the Subtropical Region

*Note: Place the vertical (10-degree-interval) meridian to the immediate left of the target station(Hong Kong in this case) so that the latitude circle runs horizontal at Hong Kong to clearly show trough passage. Mission – using subjective identification techniques on Streamline Charts at the start of 12-hourly rainfall period recorded in 1966-2012 with verification overContinue reading “A Study of 200hPa Mid-latitude Disturbance Excitation behind a 12-hr polar-stereographic Synoptic Scenario on Imminent Extreme Rainstorm Occurrence at the Subtropical Region”