Correlation coefficient Climatic parameters Over KSA	Climatic indices
Correlation coefficient Climatic parameters Over KSA	NAO	AO	SOI	NINO3.4	GMST
TEMPERATURE AT 1000HPA LEVEL	−0.3***	−0.4***	−0.1	+0.3***	+0.8*
TEMPERATURE AT 500 HPA LEVEL	−0.3***	−0.3***	−0.2	+0.2	+0.5**
SEA LEVEL PRESSURE	+0.4***	+0.5**	−0.6**	+0.5**	+0.5**
GEOPOTENTIAL HEIGHT AT GPH500 HPA LEVEL	+0.2	+0.2	−0.3***	+0.4***	+0.8*
RELATIVE HUMIDITY	−0.2	−0.3***	−0.2	+0.2	−0.5**
PRECIPITATION RATE	−0.3***	−0.3***	−0.2	+0.3***	−0.3***
OUTGOING LONGWAVE RADIATION	+0.2	+0.3***	+0.1	0.0	+0.7*