▁in ▁ 1 9 5 6 . ▁ ▁In ▁ 1 9 5 4 ▁he ▁introduced ▁( with ▁Mer v ▁Neil ) ▁stock ▁car ▁racing ▁into ▁New ▁Zealand ▁and ▁later ▁ran ▁a ▁motor cycle ▁business . ▁ ▁He ▁died ▁in ▁Christ ch urch ▁in ▁ 2 0 0 5 , ▁on ▁his ▁ 8 7 th ▁birth day . ▁ ▁References ▁ ▁Category : 1 9 1 8 ▁birth s ▁Category : 2 0 0 5 ▁death s ▁Category : New ▁Zealand ▁speed way ▁rid ers ▁Category : Sw ind on ▁Rob ins ▁rid ers <0x0A> </s> ▁Pol ar ▁ampl ification ▁is ▁the ▁phenomen on ▁that ▁any ▁change ▁in ▁the ▁net ▁radiation ▁balance ▁( for ▁example ▁green house ▁intens ification ) ▁tends ▁to ▁produce ▁a ▁larger ▁change ▁in ▁temperature ▁near ▁the ▁pol es ▁than ▁the ▁planet ary ▁average . ▁On ▁a ▁planet ▁with ▁an ▁atmosphere ▁that ▁can ▁restrict ▁emission ▁of ▁long wave ▁radiation ▁to ▁space ▁( a ▁green house ▁effect ), ▁surface ▁temper atures ▁will ▁be ▁war mer ▁than ▁a ▁simple ▁planet ary ▁equilibrium ▁temperature ▁calculation ▁would ▁predict . ▁Where ▁the ▁atmosphere ▁or ▁an ▁extensive ▁ocean ▁is ▁able ▁to ▁transport ▁heat ▁pole wards , ▁the ▁pol es ▁will ▁be ▁war mer ▁and ▁equ atorial ▁regions ▁cool er ▁than ▁their ▁local ▁net ▁radiation ▁bal ances ▁would ▁predict . ▁ ▁In ▁the ▁extreme , ▁the ▁planet ▁Ven us ▁is ▁thought ▁to ▁have ▁experienced ▁a ▁very ▁large ▁increase ▁in ▁green house ▁effect ▁over ▁its ▁lifetime , ▁so ▁much ▁so ▁that ▁its ▁pol es ▁have ▁war med