Billy Barr (mai ilimin halitta)

Billy Barr, wanda aka tsara shi a matsayin bar,  masanin kimiyya ne na Amurka wanda aka sani da tarin bayanai sama da shekaru 50 akan matakan dusar ƙanƙara, yanayin zafi da ƙaurawar dabbobi a cikin Dutsen Colorado Rocky . An san tarin bayanai na Barr a matsayin muhimmiyar shaida game da tasirin Canjin yanayi.

 Rayuwa da aiki 
Barr ya girma ne a Trenton, New Jersey .  A shekara ta 1972, a matsayin dalibi mai bincike daga Jami'ar Rutgers, ya dauki aiki na ɗan gajeren lokaci  a dakin gwaje-gwaje na Rocky Mountain Biological Laboratory yana auna ingancin ruwa kusa da Crested Butte a cikin West Elk Mountains, Colorado.   Bayan wani lokaci, ya fito a cikin wata jarida ta cikin gida a matsayin mai zaman kansa a kan dutse.

A tsakiyar shekarun 1970s, tare da niyyar farko na tserewa daga gajiyar rayuwa a cikin wuri mai nisa na Gothic,  Barr ya fara tattara bayanan muhalli da kyau ta hanyar auna zurfin dusar ƙanƙara, yanayin zafi da lura da isowar nau'o'i daban-daban a cikin bazara. "Climate diarist "wasn't out to prove anything"".  Kusan a lokaci guda, ya zama "mai kula da ba bisa ka'ida ba" na Rocky Mountain Biological Laboratory .  A ƙarshen shekarun 1990s, masanin ilimin muhalli na dakin gwaje-gwaje David Inouye ya fahimci muhimmancin bayanan Barr kuma ya fara raba shi tare da wasu masana kimiyya. Tun daga wannan lokacin, an yi amfani da bayanan Barr a cikin labaran kimiyya da yawa game da canjin yanayi.

Fim din 2016 The Snow Guardian an sadaukar da shi ga Barr.

 Manazarta 

Rukuni:Rayayyun mutane