Rchrd Sgmnd Lndzn (brn Fbrry 8, 1940) s n mrcn tmsphrc physcst knwn fr hs wrk n th dynmcs f th mddl tmsphr, tmsphrc tds, nd zn phtchmstry. H s th thr f mr thn 200 scntfc pprs. Frm 1972 t 1982, h srvd s th Grdn McKy Prfssr f Dynmc Mtrlgy t Hrvrd nvrsty. n 1983, h ws ppntd s th lfrd P. Sln Prfssr f Mtrlgy t th Msschstts nsttt f Tchnlgy, whr h wld rmn ntl hs rtrmnt n 2013. Lndzn hs dsptd th scntfc cnsnss n clmt chng nd crtczs wht h hs clld "clmt lrmsm".