Definitions for "TELECONNECTIONS"
A statistical relationship between conditions in one part of the world affecting the weather in a different part of the world. For example, there appears to be a teleconnection between the ENSO events and rainfall in California.
Atmospheric interactions between widely separated regions that have been identified through statistical correlations (in space and time). For example, the El NiƱo teleconnection with the Southwest United States involves large-scale changes in climatic conditions that are linked to increased winter rainfall.
Information used by forecasters to determine what the weather might be elsewhere when compared with past weather conditions at the same degree of longitude.
Keywords:  hpa, historical, evenly, vast, map
THESE GIVE THE HISTORICAL RELATIONSHIP BETWEEN A GIVEN POINT AND ALL OTHER POINTS OVER A LARGE AREA - LIKE THE NORTHERN HEMISPHERE - FOR A GIVEN TIME OF THE YEAR. THE POINTS ON THE MAP USUALLY CONSIST OF A SET OF MORE OR LESS EVENLY SPACED LOCATIONS CALLED GRID POINTS.
This describes a situation where a large high-pressure area links across a vast space to another high-pressure area. The circulation around each one moves between the two of them to cover large areas.
GIVE THE HISTORICAL RELATIONSHIP BETWEEN THE 500-HPA HEIGHT AT A GIVEN POINT AND ALL OTHER POINTS ON A MAP FOR A GIVEN TIME OF YEAR. WE AVERAGE THE TOP/BOTTOM 10% OF DAILY MAPS FROM 1950-1999 FOR THE SAME TIME OF YEAR HAVING THE HIGHEST/LOWEST 500-HPA HEIGHT AT THE SPECIFIED POINT.