iew ▁J aw or owski ▁was ▁chairman ▁of ▁the ▁Scient ific ▁Council ▁of ▁the ▁Central ▁Labor atory ▁for ▁Rad i ological ▁Prote ction ▁in ▁Wars aw ▁and ▁former ▁chair ▁of ▁the ▁United ▁Nations ▁Scient ific ▁Committee ▁on ▁the ▁Effect s ▁of ▁At omic ▁Rad iation ▁( 1 9 8 1 – 8 2 ) ▁. ▁ ▁He ▁was ▁a ▁principal ▁investig ator ▁of ▁three ▁research ▁projects ▁of ▁the ▁U . S . ▁Environment al ▁Prote ction ▁Agency ▁and ▁of ▁four ▁research ▁projects ▁of ▁the ▁International ▁At omic ▁Energy ▁Agency . ▁He ▁has ▁held ▁posts ▁with ▁the ▁Centre ▁d ' E t ude ▁N uc le aires ▁near ▁Paris ; ▁the ▁Bi oph ys ical ▁Group ▁of ▁the ▁Institute ▁of ▁Physics , ▁University ▁of ▁Os lo ; ▁the ▁Norwegian ▁Pol ar ▁Research ▁Institute ▁and ▁the ▁National ▁Institute ▁for ▁Pol ar ▁Research ▁in ▁Tokyo . ▁ ▁Cl imate ▁change ▁ ▁J aw or owski ' s ▁works ▁on ▁ice ▁cores ▁were ▁published ▁in ▁J aw or owski ▁( 1 9 9 4 , ▁ 1 9 9 2 ) ▁and ▁in ▁reports ▁J aw or owski ▁( 1 9 9 0 , ▁ 1 9 9 2 ). ▁J aw or owski ▁has ▁suggested ▁that ▁the ▁long - term ▁CO 2 ▁record ▁is ▁an ▁artifact ▁caused ▁by ▁the ▁struct ural ▁changes ▁of ▁the ▁ice ▁with ▁depth ▁and ▁by ▁post cor ing ▁processes . ▁ ▁However , ▁J aw or owski ' s ▁views ▁are ▁rejected ▁by ▁the ▁scientific ▁community . ▁In cre ases ▁in ▁CO