The RCP database intends to document the "Representative Concentration Pathways" emissions, concentrations, and land-cover change projections (RCPs).

Click on the link below and fill in your details to retrieve the RCP 8.5 data

https://tntcat.iiasa.ac.at/RcpDb/dsd?Action=htmlpage&page=download

You might also find these links useful

http://www.pik-potsdam.de/~mmalte/rcps/

https://sos.noaa.gov/catalog/datasets/climate-model-temperature-change-rcp-85-2006-2100/

Thank you for your answer

In this regard, i wanted to know which weather parameter data should consider for exploring different type of colling systeem on climate change

For the brazilian context you can have access to these data in: https://projeta.cptec.inpe.br/

Most of this website is in portuguese-br, but there is an option to change the language to english.