<prompt> Yini le 99 eku MBH99 ebhekisele kuyo? Njengoba kunikezwe umbuzo odlule, bhala umongo onempendulo yawo. Kungaba imisho engu-1 kuya kwengu-20. Umongo:  <response>: Umbiko wesithathu wokuhlola i-TAR waveza kakhulu igrafu enesihloko esithi Millennial Northern Hemisphere temperature reconstruction esekelwe ephepheni lika-1999 likaMichael E. Mann, uRaymond S. Bradley noMalcolm K. Hughes MBH99, okuye kwabizwa ngokuthi igrafu ye-hockey stick. Lo mdwebo wandisa umdwebo ofanayo ku-Figure 3.20 kusuka ku-IPCC Second Assessment Report ka-1995, futhi wehlukile esimisweni embikweni wokuqala wokuhlola owawungenayo amayunithi okushisa, kodwa wabonakala ubonisa ukuhlukahluka okukhulu kwezinga lokushisa komhlaba eminyakeni eyi-1000 edlule, kanye namazinga okushisa aphakeme phakathi neNkathi Efudumele YaseNkathi Ephakathi kunaphakathi nekhulu lama-20. Lesi simiso sasingeyona iplani yangempela yedatha, futhi sasisekelwe eshadini lokushisa eNgilandi ephakathi, lapho amazinga okushisa enyuka ngesisekelo sobufakazi obubhalwe phansi bezivini zaseNgilandi zasendulo. Ngisho nangalokhu kwanda, amazinga okushisa aphakeme kunawo wonke ayeboniswa ngeNkathi Efudumele YangeNkathi Ephakathi awazange afinyelele emazingeni okushisa aqoshwa maphakathi neNgilandi ngo-2007. Ukutholakala kwe-MBH99 kwasekelwa ukuvuselelwa okucashunwe nguJones et al. 1998, Pollack, Huang Shen 1998, Crowley Lowery 2000 kanye neBriffa 2000, kusetshenziswa idatha nezindlela ezihlukile. Ukwakhiwa kabusha kukaJones et al. noBriffa kwahlanganiswa nokwakhiwa kabusha kwe-MBH99 kuFigure 2.21 yombiko we-IPCC. 