2 ▁and ▁CH 4 ▁concentr ations ▁in ▁the ▁V ost ok ▁core ▁are ▁similar ▁for ▁the ▁last ▁two ▁gla cial - inter g la cial ▁trans itions , ▁even ▁though ▁only ▁the ▁most ▁recent ▁transition ▁is ▁located ▁in ▁the ▁brit t le ▁zone . ▁Such ▁evidence ▁arg ues ▁that ▁the ▁atmos pher ic ▁trace - gas ▁signal ▁is ▁not ▁strongly ▁affected ▁by ▁the ▁presence ▁of ▁the ▁brit t le ▁zone . ▁Similarly ▁Hans ▁O esch ger ▁states ▁that ▁"... Some ▁of ▁( J aw or owski ' s ) ▁statements ▁are ▁dr ast ically ▁wrong ▁from ▁the ▁physical ▁point ▁of ▁view ". ▁ ▁Op in ions ▁ ▁Stephen ▁Schne ider ▁said ▁of ▁him ▁that ▁" J aw or owski ▁is ▁perhaps ▁even ▁more ▁contr arian ▁than ▁most , ▁claim ing ▁that ▁he ▁can ▁prove ▁the ▁climate ▁is ▁going ▁to ▁get ▁col der ▁through ▁his ▁work ▁exc av ating ▁gla ci ers ▁on ▁six ▁different ▁contin ents , ▁which ▁he ▁says ▁indicates ▁what ▁we ▁should ▁really ▁be ▁worry ing ▁about ▁is ▁' The ▁approaching ▁new ▁Ice ▁Age ... ' ." ▁ ▁J aw or owski ▁wrote ▁The ▁current ▁sun spot ▁cycle ▁is ▁we aker ▁than ▁the ▁preceding ▁cycles , ▁and ▁the ▁next ▁two ▁cycles ▁will ▁be ▁even ▁we aker . ▁Bash k irt se v ▁and ▁M ish n ich ▁( 2 0 0 3 ) ▁expect ▁that ▁the ▁minimum ▁of ▁the ▁sec ular ▁cycle ▁of ▁solar ▁activity ▁will ▁occur ▁between ▁ 2 0 2 1 ▁and ▁ 2 0 2 6 , ▁which