Hasashen Iris
Hasashen iris hasashe ne ta Richard Lindzen et al. A shekara ta 2001 wanda ya bada shawarar ƙara yawan zafin teku, acikin wurare masu zafi zai haifar da raguwar gajimare na cirrus, don haka ƙarin yatsancewar infrared daga yanayin duniya. Nazarin sa game da canje-canjen da aka lura acikin kewayon girgije da kuma abubuwan da aka tsara akan hasken infrared da aka saki zuwa sararin samaniya sakamakon ya goyi bayan hasashen.Anyi hasashen wannan yabo na infrared da aka bada shawara don zama ra'ayi mara kyau wanda ɗumamar farko zai haifar da yanayin sanyi gaba ɗaya. Ra'ayin yarjejeniya shine cewa ƙara yawan zafin jiki na teku zai haifar da haɓɓakar gajimare na cirrus da rage zubar da hasken infrared kuma don haka kyakkyawan ra'ayi.

Sauran masana kimiyya daga baya sun gwada hasashen. Wasu sun kammala cewa babu wata shaida dake goyan bayan hasashen.Wasu sun sami shaidar dake nuna cewa ƙara yawan zafin jiki na teku acikin wurare masu zafi ya rage gizagizai na cirrus amma sun gano cewa duk da haka tasirin sakamako ne mai kyau maimakon ra'ayi mara kyau da Lindzen yayi hasashe.

Wani bincike na 2007 daga baya wanda Roy Spencer et al. amfani da sabunta bayanan tauraron dan adam na iya tallafawa hasashen iris.  A cikin 2011, Lindzen ya buga wani rebutt ga manyan zargi.  A cikin 2015, an buga takarda wanda ya sake ba da shawarar yiwuwar "Iris Effect".  Har ila yau, ya ba da shawarar abin da ya kira "tsarin jiki mai yiwuwa don tasirin iris." A cikin 2017, an buga wata takarda wacce ta gano cewa "gizagizai na wurare masu zafi na anvil cirrus suna yin mummunan ra'ayi game da yanayin yanayi a cikin haɗin gwiwa tare da haɓakar hazo".  Idan aka tabbatar to wannan binciken zai kasance mai goyan bayan wanzuwar "Iris Effect".

Duba kuma 

 Kafaffen yanayin zafin tsubbu
 Dimming duniya
 dumamar yanayi

Manazarta

Hanyoyin haɗi na waje 

 Takaitacciyar NASA na Dumamar Duniya da Hasashen Iris (Yuni 2002)