The Center for Urban Forestry Research's Osisi Carbon Calculator (CTCC) bụ mba ugbu a. A na-ahazi CTCC na mpempe akwụkwọ Excel, dịka nke ochie, mana ugbu a na-ekpuchi mpaghara ihu igwe 16 US. Versiondị nke a gụnyere atụmatụ ọhụrụ: ụdị nkwụ, ihe na-emepụta ihe na ozi ike. Ugbu a ndị ọrụ site n'ụsọ oké osimiri ruo n'ụsọ oké osimiri nwere ike ịbanye ụdị, nha osisi (dayameta-na-ara dị elu) ma ọ bụ afọ osisi wee nweta ozi gbasara ọnụọgụ biomass na carbon echekwara na osisi ahụ, yana uru ndị metụtara ọrụ nchekwa ike.
Nsonaazụ niile dabere na data uto osisi sitere na mpaghara ihu igwe 16 nke ọ bụla. Iji mụtakwuo ma ọ bụ budata ngwa a, gaa na US Forest Service Weebụsaịtị Center Change Resource. A na-etinye menu enyemaka na ndepụta nke ajụjụ a na-ajụkarị n'ịntanetị yana CTCC. Enyemaka teknụzụ ndị ọzọ dị site na email na psw_cufr@fs.fed.us.